The requested resource (/HTTP/1.1) is not available

linxinyidian 2011-03-19 07:44:55
编了个访问Tomcat的小程序，

package TestHttp;

import java.io.BufferedReader;
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;
import java.io.*;


public class Test {

public static void main(String[] args) throws UnknownHostException, IOException {
String ss;

Socket s = new Socket("127.0.0.1", 8080);

OutputStream os = s.getOutputStream();

PrintWriter pw = new PrintWriter(os);

pw.println("GET /HTTP/1.1 ");
pw.println("Host:localhost");
pw.println("Content-type: text ml");
pw.println();
pw.flush();

BufferedReader bf = new BufferedReader(new InputStreamReader(s.getInputStream()));

while(( ss =bf.readLine())!=null) {
System.out.println(ss);
}

bf.close();
pw.close();
os.close();
s.close();

}
}

返回一些文本

<html><head><title>Apache Tomcat/7.0.11 - Error report</title><style><!--H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A {color : black;}A.name {color : black;}HR {color : #525D76;}--></style> </head><body><h1>HTTP Status 404 - /HTTP/1.1</h1><HR size="1" noshade="noshade"><p><b>type</b> Status report</p><p><b>message</b> <u>/HTTP/1.1</u></p><p><b>description</b> <u>The requested resource (/HTTP/1.1) is not available.</u></p><HR size="1" noshade="noshade"><h3>Apache Tomcat/7.0.11</h3></body></html>

转为html格式，显示为 HTTP 404 异常
The requested resource (/HTTP/1.1) is not available.

我用的是Tomcat 7.0，不知什么原因产生此异常……


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Cary_诚 2011-10-12
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pw.println("GET /HTTP/1.1 ");
第一个斜杠后面有个空格，写成pw.println("GET / HTTP/1.1 ");
不然会链接到127.0.0.1：8080/HTTP/1.1
数位板压力测试
sdk LCS/Telegraphics Wintab* Interface Specification 1.1: 16- and 32-bit API Reference By Rick Poyner Revised February 11, 2012 This specification was developed in response to a perceived need for a standardized programming inter-face to digitizing tablets, three dimensional position sensors, and other pointing devices by a group of lead-ing digitizer manufacturers and applications developers. The availability of drivers that support the features of the specification will simplify the process of developing Windows appli¬cation programs that in-corporate absolute coordinate input, and enhance the acceptance of ad¬vanced pointing de¬vices among users. This specification is intended to be an open standard, and as such the text and information contained herein may be freely used, copied, or distributed without compensation or licensing restrictions. This document is copyright 1991-2012 by LCS/Telegraphics.* Address questions and comments to: LCS/Telegraphics 150 Rogers St. Cambridge, MA 02142 (617)225-7970 (617)225-7969 FAX Compuserve: 76506,1676 Internet: wintab@pointing.com Note: sections marked with the “(1.1)” are new sections added for specification version 1.1. Sec-tions bearing the “(1.1 modified)” notation contain updated information for specification version 1.1. Version 1.1 Update Notation Conventions 1 1. Background Information 1 1.1. Features of Digitizers 1 1.2. The Windows Environment 1 2. Design Goals 2 2.1. User Control 2 2.2. Ease of Programming 2 2.3. Tablet Sharing 3 2.4. Tablet Feature Support 3 3. Design Concepts 3 3.1. Device Conventions 3 3.2. Device Information 4 3.3. Tablet Contexts 4 3.4. Event Packets 4 3.5. Tablet Managers 5 3.6. Extensions 5 3.7. Persistent Binding of Interface Features (1.1) 6 4. Interface Implementations 6 4.1. File and Module Conventions 6 4.2. Feature Support Options 6 5. Function Reference 7 5.1. Basic Functions 7 5.1.1. WTInfo 8 5.1.2. WTOpen 9 5.1.3. WTClose 10 5.1.4. WTPacketsGet 10 5.1.5. WTPacket 11 5.2. Visibility Functions 11 5.2.1. WTEnable 11 5.2.2. WTOverlap 12 5.3. Context Editing Functions 12 5.3.1. WTConfig 12 5.3.2. WTGet 13 5.3.3. WTSet (1.1 modified) 13 5.3.4. WTExtGet 14 5.3.5. WTExtSet 14 5.3.6. WTSave 15 5.3.7. WTRestore 15 5.4. Advanced Packet and Queue Functions 16 5.4.1. WTPacketsPeek 16 5.4.2. WTDataGet 17 5.4.3. WTDataPeek 17 5.4.4. WTQueuePackets (16-bit only) 18 5.4.5. WTQueuePacketsEx 18 5.4.6. WTQueueSizeGet 19 5.4.7. WTQueueSizeSet 19 5.5. Manager Handle Functions 19 5.5.1. WTMgrOpen 19 5.5.2. WTMgrClose 20 5.6. Manager Context Functions 20 5.6.1. WTMgrContextEnum 20 5.6.2. WTMgrContextOwner 21 5.6.3. WTMgrDefContext 22 5.6.4. WTMgrDefContextEx (1.1) 22 5.7. Manager Configuration Functions 23 5.7.1. WTMgrDeviceConfig 23 5.7.2. WTMgrConfigReplace (16-bit only) 24 5.7.3. WTMgrConfigReplaceEx 24 5.8. Manager Packet Hook Functions 25 5.8.1. WTMgrPacketHook (16-bit only) 26 5.8.2. WTMgrPacketHookEx 26 5.8.3. WTMgrPacketUnhook 29 5.8.4. WTMgrPacketHookDefProc (16-bit only) 30 5.8.5. WTMgrPacketHookNext 30 5.9. Manager Preference Data Functions 31 5.9.1. WTMgrExt 31 5.9.2. WTMgrCsrEnable 32 5.9.3. WTMgrCsrButtonMap 32 5.9.4. WTMgrCsrPressureBtnMarks (16-bit only) 33 5.9.5. WTMgrCsrPressureBtnMarksEx 33 5.9.6. WTMgrCsrPressureResponse 34 5.9.7. WTMgrCsrExt 35 6. Message Reference 36 6.1. Event Messages 36 6.1.1. WT_PACKET 36 6.1.2. WT_CSRCHANGE (1.1) 37 6.2. Context Messages 37 6.2.1. WT_CTXOPEN 37 6.2.2. WT_CTXCLOSE 37 6.2.3. WT_CTXUPDATE 38 6.2.4. WT_CTXOVERLAP 38 6.2.5. WT_PROXIMITY 38 6.3. Information Change Messages 39 6.3.1. WT_INFOCHANGE 39 7. Data Reference 39 7.1. Common Data Types (1.1 modified) 39 7.2. Information Data Structures 41 7.2.1. AXIS 41 7.2.2. Information Categories and Indices (1.1 modified) 42 7.3. Context Data Structures 50 7.3.1. LOGCONTEXT (1.1 modified) 50 7.4. Event Data Structures 55 7.4.1. PACKET (1.1 modified) 55 7.4.2. ORIENTATION 57 7.4.3. ROTATION (1.1) 58 Appendix A. Using PKTDEF.H 59 Appendix B. Extension Definitions 60 B.1. Extensions Programming 60 B.2. Out of Bounds Tracking 61 OBT Programming 61 Information Category 61 Turning OBT On and Off 61 B.3. Function Keys 62 FKEYS Programming 62 Information Category 62 B.4. Tilt 62 TILT Programming 63 Information Category 63 B.5. Cursor Mask 63 CSRMASK Programming 64 Information Category 64 B.6. Extended Button Masks 64 XBTNMASK Programming 64 Information Category 65 VERSION 1.1 UPDATE NOTATION CONVENTIONS Sections marked with the “(1.1)” are new sections added for specification version 1.1. Sections bearing the “(1.1 modified)” notation contain updated information for specification version 1.1. The “(1.1)” notation also marks the definitions of new functions, messages, and data structures. The nota-tion “1.1:” marks new text or commentaries explaining new functionality added to existing features. 1 BACKGROUND INFORMATION This document describes a programming interface for using digitizing tablets and other advanced pointing de¬vices with Microsoft Windows Version 3.0 and above. The design presented here is based on the input of numerous professionals from the pointing device manufacturing and Windows soft¬ware development industries. In this document, the words "tablet" and "digitizer" are used interchange¬ably to mean all absolute point¬ing or digitizing devices that can be made to work with this interface. The definition is not lim¬ited to de¬vices that use a physical tablet. In fact, this specification can support de¬vices that combine rela¬tive and absolute pointing as well as purely relative devices. The following sections describe features of tablets and of the Windows environment that helped mo¬tivate the design. 1.1 Features of Digitizers Digitizing tablets present several problems to device interface authors. • Many tablets have a very high report rate. • Many tablets have many configurable features and types of input information. • Tablets often control the system cursor, provide additional digitizing input, and provide template or macro functions. 1.2 The Windows Environment Programming for tablets in the Windows environment presents additional problems. • Multitasking means multiple applications may have to share the tablet. • The tablet must also be able to control the system cursor and/or the pen (in Pen Windows). • The tablet must work with legacy applications, and with applications written to take advan¬tage of tablet services. • The tablet driver must add minimal speed and memory overhead, so as many applications as possible can run as efficiently as possible. • The user should be able to control how applications use the tablet. The user interface must be ef-ficient, consistent, and customizable. 2 DESIGN GOALS While the tablet interface design must address the technical problems stated above, it must also be useful to the programmers who will write tablet programs, and ultimately, to the tablet users. Four design goals will help clarify these needs, and provide some criteria for evaluating the interface speci¬fication. The goals are user control, ease of programming, tablet sharing, and tablet feature support. 2.1 User Control The user should be able to use and control the tablet in as natural and easy a manner as possible. The user's preferences should take precedence over application requests, where possible. Here are questions to ask when thinking about user control as a design goal: • Can the user understand how applications use the tablet? • Is the interface for controlling tablet functions natural and unobtrusive? • Is the user allowed to change things that help to customize the work environment, but pre¬vented from changing things over which applications must have control? 2.2 Ease of Programming Programming is easiest when the amount of knowledge and effort required matches the task at hand. Writing simple programs should require only a few lines of code and a minimal understanding of the en-vironment. On the other hand, more advanced features and functions should be available to those who need them. The interface should accommodate three kinds of programmers: those who wish to write sim-ple tablet programs, programmers who wish to write complex applications that take full ad¬vantage of tab-let capabilities, and programmers who wish to provide tablet device control features. In addition, the inter-face should accommodate programmers in as many different programming lan¬guages, situations, and en-vironments as possible. Questions to ask when thinking about ease of programming include: • How hard is it to learn the interface and write a simple program that uses tablet input? • Can programmers of complex applications control the features they need? • Are more powerful tablet device control features available? • Can the interface be used in different programming environments? • Is the interface logical, consistent, and robust? 2.3 Tablet Sharing In the Windows environment, multiple applications that use the tablet may be running at once. Each ap-plication will require different services. Applications must be able to get the services they need without getting in each others' way. Questions to ask when thinking about tablet sharing include: • Can tablet applications use the tablet features they need, independent of other applications? • Does the interface prevent a rogue application from "hijacking" the tablet, or causing dead¬locks? • Does the sharing architecture promote efficiency? 2.4 Tablet Feature Support The interface gives standard access to as many features as possible, while leaving room for future ex¬ten-sions and vendor-specific customizations. Applications should be able to get the tablet informa¬tion and services they want, just the way they want them. Users should be able to use the tablet to set up an effi-cient, comfortable work environment. Questions to ask when thinking about tablet feature support include: • Does the interface provide the features applications need? Are any commonly available fea¬tures not supported? • Does the interface provide what users need? Is anything missing? • Are future extensions possible and fairly easy? • Are vendor-specific extensions possible? 3 DESIGN CONCEPTS The proposed interface design depends on several fundamental concepts. Devices and cursor types de-scribe physical hardware configurations. The interface publishes read-only information through a single information interface. Applications interact with the interface by setting up tablet contexts and consuming event packets. Applications may assume interface and hardware control functions by be¬coming tablet managers. The interface provides explicit support for future extensions. 3.1 Device Conventions The interface provides access to one or more devices that produce pointing input. Devices sup¬ported by this interface have some common characteristics. The device must define an absolute or relative coordi-nate space in at least two dimensions for which it can return position data. The device must have a point-ing ap¬para¬tus or method (such as a stylus, or a finger touching a touch pad), called the cursor, that de¬fines the current position. The cursor must be able to return at least one bit of additional state (via a but¬ton, touching a digitizing surface, etc.). Devices may have multiple cursor types that have different physical configurations, or that have differ¬ent numbers of buttons, or return auxiliary information, such as pressure information. Cursor types may also describe different optional hardware configurations. The interface defines a standard orientation for reporting device native coordinates. When the user is viewing the device in its normal position, the coordinate origin will be at the lower left of the device. The coordinate system will be right-handed, that is, the positive x axis points from left to right, and the posi¬tive y axis points either upward or away from the user. The z axis, if supported, points either to¬ward the user or upward. For devices that lay flat on a table top, the x-y plane will be horizontal and the z axis will point upward. For devices that are oriented vertically (for example, a touch screen on a conventional dis¬play), the x-y plane will be vertical, and the z axis will point toward the user. 3.2 Device Information Any program can get descriptive information about the tablet via the WTInfo function. The interface specifies certain information that must be available, but allows new implementations to add new types of information. The basic information includes device identifiers, version numbers, and overall ca¬pabilities. The information items are organized by category and index numbers. The combination of a category and index specifies a single information data item, which may be a scalar value, string, structure, or array. Applica¬tions may retrieve single items or whole categories at once. Some categories are multiplexed. A single category code represents the first of a group of identically in-dexed categories, one for each of a set of similar objects. Multiplexed categories in¬clude those for devices and cur¬sor types. One constructs the category number by adding the defined cate¬gory code to a zero-based device or cursor identification number. The information is read-only for normal tablet applications. Some information items may change during the course of a Windows session; tablet applications receive messages notifying them of changes in tablet information. 3.3 Tablet Contexts Tablet contexts play a central role in the interface; they are the objects that applications use to specify their use of the tablet. Con¬texts include not only the physical area of the tablet that the application will use, but also information about the type, con¬tents, and delivery method for tablet events, as well as other information. Tablet contexts are somewhat analo¬gous to display contexts in the GDI interface model; they contain context information about a spe¬cific application's use of the tablet. An application can open more than one context, but most only need one. Applications can customize their contexts, or they can open a context using a default context specification that is always available. The WTInfo function provides access to the default context specification. Opening a context requires a window handle. The window handle becomes the context's owner and will receive any window messages associated with the context. Contexts are remotely similar to screen windows in that they can physically overlap. The tablet inter¬face uses a combination of context overlap order and context attributes to decide which context will process a given event. The topmost context in the overlap order whose input context encompasses the event, and whose event masks select the event, will process the event. (Note that the notion of overlap order is sepa-rate from the notion of the physical z dimension.) Tablet managers (described below) provide a way to modify and overlap contexts. 3.4 Event Packets Tablet contexts generate and report tablet activity via event packets. Applications can control how they receive events, which events they receive, and what information they contain. Applications may receive events either by polling, or via Windows messages. • Polling: Any application that has opened a context can call the WTPacketsGet function to get the next state of the tablet for that context. • Window Messages: Applications that request messages will receive the WT_PACKET mes¬sage (described below), which indicates that something happened in the context and provides a refer-ence to more information. Applications can control which events they receive by using event masks. For example, some appli¬ca¬tions may only need to know when a button is pressed, while others may need to receive an event every time the cursor moves. Tablet context event masks implement this type of control. Applications can control the contents of the event packets they receive. Some tablets can return data that many applications will not need, like button pressure and three dimensional position and orien¬tation in-formation. The context object provides a way of specifying which data items the appli¬cation needs. This allows the driver to improve the efficiency of packet delivery to applications that only need a few items per packet. Packets are stored in context-specific packet queues and retrieved by explicit function calls. The interface provides ways to peek at and get packets, to query the size and contents of the queue, and to re-size the queue. 3.5 Tablet Managers The interface provides functions for tablet management. An application can become a tablet manager by opening a tablet manager handle. This handle allows the manager access to spe¬cial functions. These man-agement functions allow the application to arrange, overlap, and modify tablet contexts. Man¬agers may also perform other functions, such as changing default values used by applica¬tions, chang¬ing ergo¬nomic, preference, and configuration settings, controlling tablet behavior with non-tablet aware applica¬tions, modi¬fy¬ing user dialogs, and recording and playing back tablet packets. Opening a manager handle re¬quires a window handle. The window becomes a manager window and receives window messages about interface and con¬text activity. 3.6 Extensions The interface allows implementations to define additional features called extensions. Extensions can be made available to new applications without the need to modify ex¬isting applications. Extensions are sup-ported through the information categories, through the flexible definition of packets, and through special context and manager functions. Designing an extension involves defining the meaning and behavior of the extension packet and/or prefer-ence data, filling in the information category, defining the extension's interface with the special functions, and possibly defining additional functions to support the extension. Each extension will be assigned a unique tag for identification. Not all implementations will support all extensions. A multiplexed information category contains descriptive data about extensions. Note that applica¬tions must find their extensions by iterating through the categories and matching tags. While tags are fixed across all implementations, category numbers may vary among implementations. 3.7 Persistent Binding of Interface Features (1.1) The interface provides access to many of its features using consecutive numeric indices whose value is not guaranteed from session to session. However, sufficient information is provided to create unique identifi¬ers for devices, cursors, and interface extensions. Devices should be uniquely identified by the contents of their name strings. If multiple identical devices are present, implementation providers should provide unique, persistent id strings to the extent possible. Identical devices that return unique serial numbers are ideal. If supported by the hardware, cursors also may have a physical cursor id that uniquely identifies the cursor in a persistent and stable manner. Interface extensions are uniquely identified by their tag. 4 INTERFACE IMPLEMENTATIONS Implementations of this interface usually support one specific device, a class of similar devices, or a com-mon combination of devices. The following sections discuss guidelines for implementations. 4.1 File and Module Conventions For 16-bit implementations, the interface functions, and any additional vendor- or device-specific func-tions, reside in a dynamic link library with the file name "WINTAB.DLL" and module name "WINTAB"; 32-bit implementations use the file name "WINTAB32.DLL" and module name "WINTAB32." Any other file or module con¬ventions are implementation specific. Implementations may include other library mod-ules or data files as necessary. Installation processes are likewise implementa¬tion-specific. Wintab programs written in the C language require two header files. WINTAB.H contains definitions of all of the functions, constants, and fixed data types. PKTDEF.H contains a parameterized definition of the PACKET data structure, that can be tailored to fit the application. The Wintab Programmer's Kit con¬tains these and other files necessary for Wintab programming, plus several example programs with C-lan¬guage source files. The Wintab Programmer's Kit is available from the author. 4.2 Feature Support Options Some features of the interface are optional and may be left out by some implementations. Support of defined data items other than x, y, and buttons is optional. Many devices only report x, y, and button information. Support of system-cursor contexts is optional. This option relieves implementations of replacing the sys¬tem mouse driver in Windows versions before 3.1. Support of Pen Windows contexts is optional. Not all systems will have the Pen Windows hardware and software necessary. Support of external tablet manager applications is optional, and the number of manager handles is imple-mentation-dependent. However, the manager functions should be present in all implementa¬tions, return¬ing appropriate failure codes if not fully implemented. An implementation may provide context- and hardware-management support internally only, if desired. On the other hand, providing the external man-ager interface may relieve the implementation of a considerable amount of user in¬terface code, and make improvements to the manager interface easier to implement and distribute later. Support of extension data items is optional. Most extensions will be geared to unusual hardware features. 5 FUNCTION REFERENCE All tablet function names have the prefix "WT" and have attributes equivalent to WINAPI. Applica¬tions gain access to the tablet interface functions through a dynamic-link library with standard file and module names, as defined in the previous section. Applications may link to the functions by using the Windows functions LoadLibrary, FreeLibrary, and GetProcAddress, or use an import library. Specific to 32-bit Wintab: The functions WTInfo, WTOpen, WTGet, and WTSet have both ANSI and Unicode versions, using the same ANSI/Unicode porting conventions used in the Win32 API. Five non-portable functions, WTQueuePackets, WTMgrCsrPressureBtnMarks, WTMgrConfigReplace, WTMgrPacketHook, and WTMgrPacketHookDefProc are replaced by new portable functions WTQueuePacketsEx, WTMgrCsrPressureBtnMarksEx, WTMgrConfigReplaceEx, WTMgrPack-etHookEx, WTMgrPacketUnhook, and WTMgrPacketHookNext. WTMgrConfigReplaceEx and WTMgrPacketHookEx have both ANSI and Unicode versions. Table 5.1. Ordinal Function Numbers for Dynamic Linking Ordinal numbers for dynamic linking are defined in the table below. Where two ordinal entries appear, the first entry identifies the 16-bit and 32-bit ANSI versions of the function. The second entry identifies the 32-bit Unicode version. Function Name Ordinal Function Name Ordinal WTInfo 20, 1020 WTMgrOpen 100 WTOpen 21, 1021 WTMgrClose 101 WTClose 22 WTMgrContextEnum 120 WTPacketsGet 23 WTMgrContextOwner 121 WTPacket 24 WTMgrDefContext 122 WTEnable 40 WTMgrDefContextEx (1.1) 206 WTOverlap 41 WTMgrDeviceConfig 140 WTConfig 60 WTMgrConfigReplace 141 WTGet 61, 1061 WTMgrConfigReplaceEx 202, 1202 WTSet 62, 1062 WTMgrPacketHook 160 WTExtGet 63 WTMgrPacketHookEx 203, 1203 WTExtSet 64 WTMgrPacketUnhook 204 WTSave 65 WTMgrPacketHookDefProc 161 WTRestore 66 WTMgrPacketHookNext 205 WTPacketsPeek 80 WTMgrExt 180 WTDataGet 81 WTMgrCsrEnable 181 WTDataPeek 82 WTMgrCsrButtonMap 182 WTQueuePackets 83 WTMgrCsrPressureBtnMarks 183 WTQueuePacketsEx 200 WTMgrCsrPressureBtnMarksEx 201 WTQueueSizeGet 84 WTMgrCsrPressureResponse 184 WTQueueSizeSet 85 WTMgrCsrExt 185 5.1 Basic Functions The functions in the following section will be used by most tablet-aware applications. They include getting interface and device information, opening and closing contexts, and retrieving packets by polling or via Windows messages. 5.1.1 WTInfo Syntax UINT WTInfo(wCategory, nIndex, lpOutput) This function returns global information about the interface in an application-sup-plied buffer. Different types of information are specified by different index argu-ments. Applications use this function to receive information about tablet coordi-nates, physical dimensions, capabilities, and cursor types. Parameter Type/Description wCategory UINT Identifies the category from which information is being re-quested. nIndex UINT Identifies which information is being requested from within the category. lpOutput LPVOID Points to a buffer to hold the requested information. Return Value The return value specifies the size of the returned information in bytes. If the infor-mation is not supported, the function returns zero. If a tablet is not physi¬cally pres-ent, this function always returns zero. Comments Several important categories of information are available through this function. First, the function provides identification information, including specification and software version numbers, and tablet vendor and model information. Sec¬ond, the function provides general capability information, including dimensions, resolutions, optional features, and cursor types. Third, the function provides categories that give defaults for all tablet context attributes. Finally, the func¬tion may provide any other implementation- or vendor-specific information cat¬egories necessary. The information returned by this function is subject to change during a Win¬dows session. Applications cannot change the information returned here, but tablet man-ager applications or hardware changes or errors can. Applications can respond to information changes by fielding the WT_INFOCHANGE message. The parameters of the message indicate which information has changed. If the wCategory argument is zero, the function copies no data to the output buffer, but returns the size in bytes of the buffer necessary to hold the largest complete category. If the nIndex argument is zero, the function returns all of the information entries in the category in a single data structure. If the lpOutput argument is NULL, the function just returns the required buffer size. See Also Category and index definitions in tables 7.3 through 7.9, and the WT_INFOCHANGE message in section 6.3.1. 5.1.2 WTOpen Syntax HCTX WTOpen(hWnd, lpLogCtx, fEnable) This function establishes an active context on the tablet. On successful comple¬tion of this function, the application may begin receiving tablet events via mes¬sages (if they were requested), and may use the handle returned to poll the con¬text, or to per-form other context-related functions. Parameter Type/Description hWnd HWND Identifies the window that owns the tablet context, and receives messages from the context. lpLogCtx LPLOGCONTEXT Points to an application-provided LOGCONTEXT data structure describing the context to be opened. fEnable BOOL Specifies whether the new context will immediately begin processing input data. Return Value The return value identifies the new context. It is NULL if the context is not opened. Comments Opening a new context allows the application to receive tablet input or creates a context that controls the system cursor or Pen Windows pen. The owning window (and all manager windows) will immediately receive a WT_CTXOPEN message when the context has been opened. If the fEnable argument is zero, the context will be created, but will not process input. The context can be enabled using the WTEnable function. If tablet event messages were requested in the context specification, the owning window will receive them. The application can control the message numbers used the lcMsgBase field of the LOGCONTEXT structure. The window that owns the new context will receive context and information change messages even if event messages were not requested. It is not necessary to handle these in many cases, but some applications may wish to do so. The newly opened tablet context will be placed on the top of the context overlap or-der. Invalid or out-of-range attribute values in the logical context structure will ei¬ther be validated, or cause the open to fail, depending on the attributes involved. Upon a successful return from the function, the context specification pointed to by lpLogCtx will contain the validated values. See Also The WTEnable function in section 5.2.1, the LOGCONTEXT data structure in section 7.3.1, and the context and infor¬mation change messages in sections 6.2 and 6.3. 5.1.3 WTClose Syntax BOOL WTClose(hCtx) This function closes and destroys the tablet context object. Parameter Type/Description hCtx HCTX Identifies the context to be closed. Return Value The function returns a non-zero value if the context was valid and was destroyed. Otherwise, it returns zero. Comments After a call to this function, the passed handle is no longer valid. The owning win¬dow (and all manager windows) will receive a WT_CTXCLOSE message when the context has been closed. See Also The WTOpen function in section 5.1.2. 5.1.4 WTPacketsGet Syntax int WTPacketsGet(hCtx, cMaxPkts, lpPkts) This function copies the next cMaxPkts events from the packet queue of context hCtx to the passed lpPkts buffer and removes them from the queue. Parameter Type/Description hCtx HCTX Identifies the context whose packets are being returned. cMaxPkts int Specifies the maximum number of packets to return. lpPkts LPVOID Points to a buffer to receive the event packets. Return Value The return value is the number of packets copied in the buffer. Comments The exact structure of the returned packet is determined by the packet infor¬mation that was requested when the context was opened. The buffer pointed to by lpPkts must be at least cMaxPkts * sizeof(PACKET) bytes long to prevent overflow. Applications may flush packets from the queue by calling this function with a NULL lpPkt argument. See Also The WTPacketsPeek function in section 5.4.1, and the descriptions of the LOGCONTEXT (section 7.3.1) and PACKET (section 7.4.1) data structures. 5.1.5 WTPacket Syntax BOOL WTPacket(hCtx, wSerial, lpPkt) This function fills in the passed lpPkt buffer with the context event packet having the specified serial number. The returned packet and any older packets are removed from the context's internal queue. Parameter Type/Description hCtx HCTX Identifies the context whose packets are being returned. wSerial UINT Serial number of the tablet event to return. lpPkt LPVOID Points to a buffer to receive the event packet. Return Value The return value is non-zero if the specified packet was found and returned. It is zero if the specified packet was not found in the queue. Comments The exact structure of the returned packet is determined by the packet infor¬mation that was requested when the context was opened. The buffer pointed to by lpPkts must be at least sizeof(PACKET) bytes long to pre-vent overflow. Applications may flush packets from the queue by calling this function with a NULL lpPkts argument. See Also The descriptions of the LOGCONTEXT (section 7.3.1) and PACKET (section 7.4.1) data structures. 5.2 Visibility Functions The functions in this section allow applications to control contexts' visibility, whether or not they are pro-cessing input, and their overlap order. 5.2.1 WTEnable Syntax BOOL WTEnable(hCtx, fEnable) This function enables or disables a tablet context, temporarily turning on or off the processing of packets. Parameter Type/Description hCtx HCTX Identifies the context to be enabled or disabled. fEnable BOOL Specifies enabling if non-zero, disabling if zero. Return Value The function returns a non-zero value if the enable or disable request was satis¬fied, zero otherwise. Comments Calls to this function to enable an already enabled context, or to disable an al¬ready disabled context will return a non-zero value, but otherwise do nothing. The context’s packet queue is flushed on disable. Applications can determine whether a context is currently enabled by using the WTGet function and examining the lcStatus field of the LOGCONTEXT struc¬ture. See Also The WTGet function in section 5.3.2, and the LOGCONTEXT structure in sec¬tion 7.3.1. 5.2.2 WTOverlap Syntax BOOL WTOverlap(hCtx, fToTop) This function sends a tablet context to the top or bottom of the order of over¬lapping tablet contexts. Parameter Type/Description hCtx HCTX Identifies the context to move within the overlap order. fToTop BOOL Specifies sending the context to the top of the overlap or-der if non-zero, or to the bottom if zero. Return Value The function returns non-zero if successful, zero otherwise. Comments Tablet contexts' input areas are allowed to overlap. The tablet interface main¬tains an overlap order that helps determine which context will process a given event. The topmost context in the overlap order whose input context encom¬passes the event, and whose event masks select the event will process the event. This function is useful for getting access to input events when the application's con-text is overlapped by other contexts. The function will fail only if the context argument is invalid. 5.3 Context Editing Functions This group of functions allows applications to edit, save, and restore contexts. 5.3.1 WTConfig Syntax BOOL WTConfig(hCtx, hWnd) This function prompts the user for changes to the passed context via a dialog box. Parameter Type/Description hCtx HCTX Identifies the context that the user will modify via the dialog box. hWnd HWND Identifies the window that will be the parent window of the dialog box. Return Value The function returns a non-zero value if the tablet context was changed, zero oth-erwise. Comments Tablet applications can use this function to let the user choose context attributes that the application doesn't need to control. Applications can control the editing of con¬text attributes via the lcLocks logical context structure member. Applications should consider providing access to this function through a menu item or command. See Also The LOGCONTEXT structure in section 7.3.1 and the context lock values in table 7.13. 5.3.2 WTGet Syntax BOOL WTGet(hCtx, lpLogCtx) This function fills the passed structure with the current context attributes for the passed handle. Parameter Type/Description hCtx HCTX Identifies the context whose attributes are to be copied. lpLogCtx LPLOGCONTEXT Points to a LOGCONTEXT data structure to which the context attributes are to be copied. Return Value The function returns a non-zero value if the data is retrieved successfully. Oth¬er¬wise, it returns zero. See Also The LOGCONTEXT structure in section 7.3.1. 5.3.3 WTSet (1.1 modified) Syntax BOOL WTSet(hCtx, lpLogCtx) This function allows some of the context's attributes to be changed on the fly. Parameter Type/Description hCtx HCTX Identifies the context whose attributes are being changed. lpLogCtx LPLOGCONTEXT Points to a LOGCONTEXT data structure containing the new context attributes. Return Value The function returns a non-zero value if the context was changed to match the passed context specification; it returns zero if any of the requested changes could not be made. Comments If this function is called by the task or process that owns the context, any context attribute may be changed. Otherwise, the function can change attributes that do not affect the format or meaning of the context's event packets and that were not speci-fied as locked when the context was opened. Context lock values can only be changed by the context’s owner. 1.1: If the hCtx argument is a default context handle returned from WTMgrDef-Context or WTMgrDefContextEx, and the lpLogCtx argument is WTP_LPDEFAULT, the default context will be reset to its initial factory default values. See Also The LOGCONTEXT structure in section 7.3.1 and the context lock values in table 7.13. 5.3.4 WTExtGet Syntax BOOL WTExtGet(hCtx, wExt, lpData) This function retrieves any context-specific data for an extension. Parameter Type/Description hCtx HCTX Identifies the context whose extension attributes are being retrieved. wExt UINT Identifies the extension tag for which context-specific data is being retrieved. lpData LPVOID Points to a buffer to hold the retrieved data. Return Value The function returns a non-zero value if the data is retrieved successfully. Oth¬er¬wise, it returns zero. See Also The extension definitions in Appendix B. 5.3.5 WTExtSet Syntax BOOL WTExtSet(hCtx, wExt, lpData) This function sets any context-specific data for an extension. Parameter Type/Description hCtx HCTX Identifies the context whose extension attributes are being modified. wExt UINT Identifies the extension tag for which context-specific data is being modified. lpData LPVOID Points to the new data. Return Value The function returns a non-zero value if the data is modified successfully. Oth¬er¬wise, it returns zero. Comments Extensions may forbid their context-specific data to be changed during the life¬time of a context. For such extensions, calls to this function would always fail. Extensions may also limit context data editing to the task of the owning window, as with the context locks. See Also The extension definitions in Appendix B, the LOGCONTEXT data structure in section 7.3.1 and the context locking values in table 7.13. 5.3.6 WTSave Syntax BOOL WTSave(hCtx, lpSaveInfo) This function fills the passed buffer with binary save information that can be used to restore the equivalent context in a subsequent Windows session. Parameter Type/Description hCtx HCTX Identifies the context that is being saved. lpSaveInfo LPVOID Points to a buffer to contain the save information. Return Value The function returns non-zero if the save information is successfully retrieved. Oth-erwise, it returns zero. Comments The size of the save information buffer can be determined by calling the WTInfo function with category WTI_INTERFACE, index IFC_CTXSAVESIZE. The save information is returned in a private binary data format. Applications should store the information unmodified and recreate the context by passing the save information to the WTRestore function. Using WTSave and WTRestore allows applications to easily save and restore ex-tension data bound to contexts. See Also The WTRestore function in section 5.3.7. 5.3.7 WTRestore Syntax HCTX WTRestore(hWnd, lpSaveInfo, fEnable) This function creates a tablet context from save information returned from the WTSave function. Parameter Type/Description hWnd HWND Identifies the window that owns the tablet context, and receives messages from the context. lpSaveInfo LPVOID Points to a buffer containing save information. fEnable BOOL Specifies whether the new context will immediately begin processing input data. Return Value The function returns a valid context handle if successful. If a context equivalent to the save information could not be created, the function returns NULL. Comments The save information is in a private binary data format. Applications should only pass save information retrieved by the WTSave function. This function is much like WTOpen, except that it uses save in¬formation for input instead of a logical context. In particular, it will generate a WT_CTXOPEN mes¬sage for the new context. See Also The WTOpen function in section 5.1.2, the WTSave function in section 5.3.6, and the WT_CTXOPEN message in section 6.2.1. 5.4 Advanced Packet and Queue Functions These functions provide advanced packet retrieval and queue manipulation. The packet retrieval functions require the application to provide a packet output buffer. To prevent overflow, the buffer must be large enough to hold the requested number of packets from the specified context. It is up to the caller to deter¬mine the packet size (by interrogating the context, if necessary), and to allocate a large enough buffer. Ap¬plications may flush packets from the queue by passing a NULL buffer pointer. 5.4.1 WTPacketsPeek Syntax int WTPacketsPeek(hCtx, cMaxPkts, lpPkts) This function copies the next cMaxPkts events from the packet queue of context hCtx to the passed lpPkts buffer without removing them from the queue. Parameter Type/Description hCtx HCTX Identifies the context whose packets are being read. cMaxPkts int Specifies the maximum number of packets to return. lpPkts LPVOID Points to a buffer to receive the event packets. Return Value The return value is the number of packets copied in the buffer. Comments The buffer pointed to by lpPkts must be at least cMaxPkts * sizeof(PACKET) bytes long to prevent overflow. See Also the WTPacketsGet function in section 5.1.4. 5.4.2 WTDataGet Syntax int WTDataGet(hCtx, wBegin, wEnd, cMaxPkts, lpPkts, lpNPkts) This function copies all packets with serial numbers between wBegin and wEnd in-clusive from the context's queue to the passed buffer and removes them from the queue. Parameter Type/Description hCtx HCTX Identifies the context whose packets are being returned. wBegin UINT Serial number of the oldest tablet event to return. wEnd UINT Serial number of the newest tablet event to return. cMaxPkts int Specifies the maximum number of packets to return. lpPkts LPVOID Points to a buffer to receive the event packets. lpNPkts LPINT Points to an integer to receive the number of packets ac-tually copied. Return Value The return value is the total number of packets found in the queue between wBegin and wEnd. Comments The buffer pointed to by lpPkts must be at least cMaxPkts * sizeof(PACKET) bytes long to prevent overflow. See Also The WTDataPeek function in section 5.4.3, and the WTQueuePacketsEx function in section 5.4.5. 5.4.3 WTDataPeek Syntax int WTDataPeek(hCtx, wBegin, wEnd, cMaxPkts, lpPkts, lpNPkts) This function copies all packets with serial numbers between wBegin and wEnd in-clusive, from the context's queue to the passed buffer without removing them from the queue. Parameter Type/Description hCtx HCTX Identifies the context whose packets are being read. wBegin UINT Serial number of the oldest tablet event to return. wEnd UINT Serial number of the newest tablet event to return. cMaxPkts int Specifies the maximum number of packets to return. lpPkts LPVOID Points to a buffer to receive the event packets. lpNPkts LPINT Points to an integer to receive the number of packets ac-tually copied. Return Value The return value is the total number of packets found in the queue between wBegin and wEnd. Comments The buffer pointed to by lpPkts must be at least cMaxPkts * sizeof(PACKET) bytes long to prevent overflow. See Also The WTDataGet function in section 5.4.2, and the WTQueuePacketsEx function in section 5.4.5. 5.4.4 WTQueuePackets (16-bit only) Syntax DWORD WTQueuePackets(hCtx) This function returns the serial numbers of the oldest and newest packets cur¬rently in the queue. Parameter Type/Description hCtx HCTX Identifies the context whose queue is being queried. Return Value The high word of the return value contains the newest packet's serial number; the low word contains the oldest. Comments This function is non-portable and is superseded by WTQueuePacketsEx. See Also The WTQueuePacketsEx function in section 5.4.5. 5.4.5 WTQueuePacketsEx Syntax BOOL WTQueuePacketsEx(hCtx, lpOld, lpNew) This function returns the serial numbers of the oldest and newest packets cur¬rently in the queue. Parameter Type/Description hCtx HCTX Identifies the context whose queue is being queried. lpOld UINT FAR * Points to an unsigned integer to receive the oldest packet's serial number. lpNew UINT FAR * Points to an unsigned integer to receive the newest packet's serial number. Return Value The function returns non-zero if successful, zero otherwise. 5.4.6 WTQueueSizeGet Syntax int WTQueueSizeGet(hCtx) This function returns the number of packets the context's queue can hold. Parameter Type/Description hCtx HCTX Identifies the context whose queue size is being re¬turned. Return Value The return value is the number of packet the queue can hold. See Also The WTQueueSizeSet function in section 5.4.7. 5.4.7 WTQueueSizeSet Syntax BOOL WTQueueSizeSet(hCtx, nPkts) This function attempts to change the context's queue size to the value specified in nPkts. Parameter Type/Description hCtx HCTX Identifies the context whose queue size is being set. nPkts int Specifies the requested queue size. Return Value The return value is non-zero if the queue size was successfully changed. Other¬wise, it is zero. Comments If the return value is zero, the context has no queue because the function deletes the original queue before attempting to create a new one. The application must continue calling the function with a smaller queue size until the function returns a non-zero value. See Also The WTQueueSizeGet function in section 5.4.6. 5.5 Manager Handle Functions The functions described in this and subsequent sections are for use by tablet manager applications. The functions of this section create and destroy manager handles. These handles allow the interface code to limit the degree of simultaneous access to the powerful manager functions. Also, opening a manager handle lets the application receive messages about tablet interface activity. 5.5.1 WTMgrOpen Syntax HMGR WTMgrOpen(hWnd, wMsgBase) This function opens a tablet manager handle for use by tablet manager and con¬figu-ration applications. This handle is required to call the tablet management func¬tions. Parameter Type/Description hWnd HWND Identifies the window which owns the manager handle. wMsgBase UINT Specifies the message base number to use when notifying the manager window. Return Value The function returns a manager handle if successful, otherwise it returns NULL. Comments While the manager handle is open, the manager window will receive context mes-sages from all tablet contexts. Manager windows also receive information change messages. The number of manager handles available is interface implementation-dependent, and can be determined by calling the WTInfo function with category WTI_INTERFACE and index IFC_NMANAGERS. See Also The WTInfo function in section 5.1.1, the WTMgrClose function in section 5.5.2, the description of message base numbers in section 6 and the context and in¬for¬ma-tion change messages in sections 6.2 and 6.3. 5.5.2 WTMgrClose Syntax BOOL WTMgrClose(hMgr) This function closes a tablet manager handle. After this function returns, the passed manager handle is no longer valid. Parameter Type/Description hMgr HMGR Identifies the manager handle to close. Return Value The function returns non-zero if the handle was valid; otherwise, it returns zero. 5.6 Manager Context Functions These functions provide access to all open contexts and their owners, and allow changing context de¬faults. Only tablet managers are allowed to manipulate tablet contexts belonging to other applica¬tions. 5.6.1 WTMgrContextEnum Syntax BOOL WTMgrContextEnum(hMgr, lpEnumFunc, lParam) This function enumerates all tablet context handles by passing the handle of each context, in turn, to the callback function pointed to by the lpEnumFunc pa¬rameter. The enumeration terminates when the callback function returns zero. Parameter Type/Description hMgr HMGR Is the valid manager handle that identifies the caller as a manager application. lpEnumFunc WTENUMPROC Is the procedure-instance address of the call-back function. See the following "Comments" section for details. lParam LPARAM Specifies the value to be passed to the callback func-tion for the application's use. Return Value The return value specifies the outcome of the function. It is non-zero if all con¬texts have been enumerated. Otherwise, it is zero. Comments The address passed as the lpEnumFunc parameter must be created by using the MakeProcInstance function. The callback function must have attributes equivalent to WINAPI. The callback function must have the following form: Callback BOOL WINAPI EnumFunc(hCtx, lParam) HCTX hCtx; LPARAM lParam; EnumFunc is a place holder for the application-supplied function name. The actual name must be exported by including it in an EXPORTS statement in the applica-tion's module-definition file. Parameter Description hCtx Identifies the context. lParam Specifies the 32-bit argument of the WTMgrContextEnum func-tion. Return Value The function must return a non-zero value to continue enumeration, or zero to stop it. 5.6.2 WTMgrContextOwner Syntax HWND WTMgrContextOwner(hMgr, hCtx) This function returns the handle of the window that owns a tablet context. Parameter Type/Description hMgr HMGR Is the valid manager handle that identifies the caller as a manager application. hCtx HCTX Identifies the context whose owner is to be returned. Return Value The function returns the context owner's window handle if the passed arguments are valid. Otherwise, it returns NULL. Comments This function allows the tablet manager to coordinate tablet context manage¬ment with the states of the context-owning windows. 5.6.3 WTMgrDefContext Syntax HCTX WTMgrDefContext(hMgr, fSystem) This function retrieves a context handle that allows setting values for the current default digit¬izing or system context. Parameter Type/Description hMgr HMGR Is the valid manager handle that identifies the caller as a manager application. fSystem BOOL Specifies retrieval of the default system context if non-zero, or the default digitizing context if zero. Return Value The return value is the context handle for the specified default context, or NULL if the arguments were invalid. Comments The default digitizing context is the context whose attributes are returned by the WTInfo function WTI_DEFCONTEXT category. The default system context is the context whose attributes are returned by the WTInfo function WTI_DEFSYSCTX category. Editing operations on the retrieved handles will fail if the new default contexts do not meet certain requirements. The digitizing context must include at least buttons, x, and y in its packet data, and must return absolute coordinates. 1.1: Editing the current default digitizing context will also update the device-spe¬cific default context for the device listed in the lcDevice field of the default con¬text’s LOGCONTEXT structure. See Also The WTInfo function in section 5.1.1 the WTMgrDefContextEx function in section 5.6.4, and the category and index definitions in tables 7.3 through 7.9. 5.6.4 WTMgrDefContextEx (1.1) Syntax HCTX WTMgrDefContextEx(hMgr, wDevice, fSystem) This function retrieves a context handle that allows setting values for the default digit¬izing or system context for a specified device. Parameter Type/Description hMgr HMGR Is the valid manager handle that identifies the caller as a manager application. wDevice UINT Specifies the device for which a default context handle will be returned. fSystem BOOL Specifies retrieval of the default system context if non-zero, or the default digitizing context if zero. Return Value The return value is the context handle for the specified default context, or NULL if the arguments were invalid. Comments The default digitizing contexts are contexts whose attributes are returned by the WTInfo function WTI_DDCTXS multiplexed category. The default system con-texts are contexts whose attributes are returned by the WTInfo function WTI_DSCTXS multiplexed category. Editing operations on the retrieved handles will fail if the new default contexts do not meet certain requirements. The digitizing context must include at least buttons, x, and y in its packet data, and must return absolute coordinates. See Also The WTInfo function in section 5.1.1, and the category and index definitions in tables 7.3 through 7.9. 5.7 Manager Configuration Functions These functions allow manager applications to replace the default context configuration dialog and to display a configuration dialog for each hardware device. 5.7.1 WTMgrDeviceConfig Syntax UINT WTMgrDeviceConfig(hMgr, wDevice, hWnd) This function displays a custom modal tablet-hardware configuration dialog box, if one is supported. Parameter Type/Description hMgr HMGR Is the valid manager handle that identifies the caller as a manager application. wDevice UINT Identifies the device that the user will configure via the dialog box. hWnd HWND Identifies the window that will be the parent window of the dialog box. If this argument is NULL, the function will return non-zero if the dialog is supported, or zero otherwise. Return Value The return value is zero if the dialog box is not supported. Otherwise, it is one of the following non-zero values. Value Meaning WTDC_CANCEL The user canceled the dialog without making any changes. WTDC_OK The user made and confirmed changes. WTDC_RESTART The user made and confirmed changes that require a sys-tem restart in order to take effect. The calling program should query the user to determine whether to restart. Restart Windows using the function call ExitWin-dows(EW_RESTARTWINDOWS, 0);. 5.7.2 WTMgrConfigReplace (16-bit only) Syntax BOOL WTMgrConfigReplace(hMgr, fInstall, lpConfigProc) This function allows a manager application to replace the default behavior of the WTConfig function. Parameter Type/Description hMgr HMGR Is the valid manager handle that identifies the caller as a manager application. fInstall BOOL Specifies installation of a replacement function if non-zero, or removal of the current replacement if zero. lpConfigProc WTCONFIGPROC Is the procedure-instance address of the new configuration function. This argument is ignored during a re¬moval request. Return Value The function return non-zero if the installation or removal request succeeded. Oth-erwise, it returns zero. Comments This function is non-portable and is superseded by WTMgrConfigReplaceEx. See Also The WTConfig function in section 5.3.1, and for a description of the configuration callback function, see the WTMgrConfigReplaceEx function in section 5.7.3. 5.7.3 WTMgrConfigReplaceEx Syntax BOOL WTMgrConfigReplaceEx(hMgr, fInstall, lpszModule, lpszCfgProc) This function allows a manager application to replace the default behavior of the WTConfig function. Parameter Type/Description hMgr HMGR Is the valid manager handle that identifies the caller as a manager application. fInstall BOOL Specifies installation of a replacement function if non-zero, or removal of the current replacement if zero. lpszModule LPCTSTR Points to a null-terminated string that names a DLL module containing the new configuration function. This argument is ignored during a re¬moval request lpszCfgProc LPCSTR Points to a null-terminated string that names the new configuration function. This argument is ignored during a re¬moval request. Return Value The function return non-zero if the installation or removal request succeeded. Oth-erwise, it returns zero. Comments The configuration callback function must have attributes equivalent to WINAPI. Only one callback function may be installed at a time. The manager handle passed with the removal request must match the handle passed with the corre¬sponding in-stallation request. Tablet managers that install a replacement context configuration function must re-move it before exiting. Callback BOOL WINAPI ConfigProc(hWnd, hCtx) HWND hWnd; HCTX hCtx; ConfigProc is a place holder for the application-supplied function name. The actual name must be exported by including it in an EXPORTS statement in the applica-tion's module-definition file. Parameter Description hWnd Identifies the window that will be the parent window of the dialog box. hCtx Identifies the context that the user will modify via the dialog box. Return Value The function returns a non-zero value if the tablet context was changed, zero oth-erwise. Comments The configuration function and resulting dialog box should analyze the lcLocks context structure member, and only allow editing of unlocked context attributes. See Also The WTConfig function in section 5.3.1. 5.8 Manager Packet Hook Functions These functions allow manager applications to monitor, record, and play back sequences of tablet packets. 5.8.1 WTMgrPacketHook (16-bit only) Syntax WTHOOKPROC WTMgrPacketHook(hMgr, fInstall, nType, lpFunc) This function installs or removes a packet hook function. Parameter Type/Description hMgr HMGR Is the valid manager handle that identifies the caller as a manager application. fInstall BOOL Specifies installation of a hook function if non-zero, or removal of the specified hook if zero. nType int Specifies the packet hook to be installed. It can be any one of the following values: Value Meaning WTH_PLAYBACK Installs a packet playback hook. WTH_RECORD Installs a packet record hook. lpFunc WTHOOKPROC Is the procedure-instance address of the hook function to be installed. See the "Comments" section under WTMgrPacketHookEx for details. Return Value When installing a hook, the return value points to the procedure-instance ad¬dress of the previously installed hook (if any). It is NULL if there is no previous hook; it is negative one if the hook cannot be installed. The application or library that calls this func¬tion should save this return value in the library's data segment. The fourth argument of the WTPacketHookDefProc function points to the location in memory where the library saves this return value. When removing a hook, the return value is the passed lpFunc if successful, NULL otherwise. Comments This function is non-portable and is superseded by WTMgrPacketHookEx and WTMgrPacketUnhook. See Also the WTMgrPacketHookEx function in section 5.8.2, and the WTMgrPacketUn-hook function in section 5.8.3. 5.8.2 WTMgrPacketHookEx Syntax HWTHOOK WTMgrPacketHookEx(hMgr, nType, lpszModule, lpszHookProc) This function installs a packet hook function. Parameter Type/Description hMgr HMGR Is the valid manager handle that identifies the caller as a manager application. nType int Specifies the packet hook to be installed. It can be any one of the following values: Value Meaning WTH_PLAYBACK Installs a packet playback hook. WTH_RECORD Installs a packet record hook. lpszModule LPCTSTR Points to a null-terminated string that names a DLL module containing the new hook function. See the following "Comments" section for details. lpszHookProc LPCSTR Points to a null-terminated string that names the new hook function. See the following "Comments" section for details. Return Value If the function succeeds, the return value is the handle of the installed hook func-tion. Otherwise, the return value is NULL. Comments Packet hooks are a shared resource. Installing a hook affects all applications using the interface. All Wintab hook functions must be exported functions residing in a DLL module. The following section describes how to support the individual hook functions. WTH_PLAYBACK Wintab calls the WTH_PLAYBACK hook whenever a request for an event packet is made. The function is intended to be used to supply a previously recorded event packet for a compatible context. The hook function must have attributes equivalent to WINAPI. The filter function must have the following form: Hook Function LRESULT WINAPI HookFunc(nCode, wParam, lParam); int nCode; WPARAM wParam; LPARAM lParam; HookFunc is a place holder for the library-supplied function name. The actual name must be exported by including it in an EXPORTS statement in the library's mod¬ule-definition file. Parameter Description nCode Specifies whether the hook function should process the mes¬sage or call the WTMgrPacketHookDefProc (if installed by WTMgrPacketHook)or WTMgrPacketHookNext (if installed by WTMgrPacketHookEx) function. If the nCode parame¬ter is less than zero, the hook function should pass the message to the appropriate function without further process¬ing. wParam Specifies the context handle whose event is being requested. lParam Points to the packet being processed by the hook function. Comments The WTH_PLAYBACK function should copy an event packet to the buffer pointed to by the lParam pa¬rameter. The packet must have been previously recorded by us-ing the WTH_RECORD hook. It should not modify the packet. The return value should be the amount of time (in milliseconds) Wintab should wait before pro¬cess¬ing the mes¬sage. This time can be computed by calculation the difference between the time stamps of the current and previous packets. If the function returns zero, the message is processed immediately. Once it returns control to Wintab, the packet continues to be processed. If the nCode parameter is WTHC_SKIP, the hook func-tion should prepare to return the next recorded event message on its next call. The packet pointed to by lParam will have the same structure as packets re¬trieved from the context normally. Wintab will validate the following packet items to en¬sure consistency: context handle, time stamp, and serial number. The remaining fields will be valid if the context used for playback is equivalent to the context from which the events were recorded. The WTH_PLAYBACK hook will not be called to notify it of the display or re¬moval of system modal dialog boxes. It is expected that applications playing back packets will also be playing back window event messages using Windows' own hook functions. While the WTH_PLAYBACK function is in effect, Wintab ignores all hardware in-put. WTH_RECORD The interface calls the WTH_RECORD hook whenever it processes a packet from a context event queue. The hook can be used to record the packet for later playback. The hook function must have attributes equivalent to WINAPI. The hook function must have the following form: Hook Function LRESULT WINAPI HookFunc(nCode, wParam, lParam); int nCode; WPARAM wParam; LPARAM lParam; HookFunc is a place holder for the library-supplied function name. The actual name must be exported by including it in an EXPORTS statement in the library's mod¬ule-definition file. Parameter Description nCode Specifies whether the hook function should process the mes¬sage or call the WTMgrPacketHookDefProc (if installed by WTMgrPacketHook)or WTMgrPacketHookNext (if installed by WTMgrPacketHookEx) function. If the nCode parame¬ter is less than zero, the hook function should pass the message to the appropriate function without further process¬ing. wParam Specifies the context handle whose event is being processed. lParam Points to the packet being processed by the hook function. Comments The WTH_RECORD function should save a copy of the packet for later play¬back. It should not modify the packet. Once it returns control to Wintab, the message con-tinues to be processed. The filter function does not require a return value. The packet pointed to by lParam will have the same structure as packets re¬trieved from the context normally. The WTH_RECORD hook will not be called to notify it of the display or re¬moval of system modal dialog boxes. It is expected that applications recording packets will also be recording window event messages using Windows' own hook functions. 5.8.3 WTMgrPacketUnhook Syntax BOOL WTMgrPacketUnhook(hHook) This function removes a hook function installed by the WTMgrPacketHookEx function. Parameter Type/Description hHook HWTHOOK Identifies the hook function to be removed. Return Value The function returns a non-zero value if successful, zero otherwise. See Also The WTMgrPacketHookEx function in section 5.8.2, and the WTMgrPack-etHookNext function in section 5.8.5. 5.8.4 WTMgrPacketHookDefProc (16-bit only) Syntax LRESULT WTMgrPacketHookDefProc(nCode, wParam, lParam, lplpFunc) This function calls the next function in a chain of packet hook functions. A packet hook function is a function that processes packets before they are re¬trieved from a context's queue. When applications define more than one hook function by using the WTMgrPacketHook function, Wintab places func¬tions of the same type in a chain. Parameter Type/Description nCode int Specifies a code used by the hook function to determine how to process the message. wParam WPARAM Specifies the word parameter of the message that the hook function is processing. lParam LPARAM Specifies the long parameter of the message that the hook function is processing. lplpFunc WTHOOKPROC FAR * Points to a memory location that con-tains the WTHOOKPROC returned by the WTMgrPacketHook function. Wintab changes the value at this location after an appli-cation unhooks the hook using the WTMgrPacketHook function. Return Value The return value specifies a value that is directly related to the nCode parameter. Comments This function is non-portable and is superseded by the WTMgrPacketHookNext function. See Also The WTMgrPacketHookNext function in section 5.8.5. 5.8.5 WTMgrPacketHookNext Syntax LRESULT WTMgrPacketHookNext(hHook, nCode, wParam, lParam) This function passes the hook information to the next hook function in the current hook chain. Parameter Type/Description hHook HWTHOOK Identifies the current hook. nCode int Specifies the hook code passed to the current hook function. wParam WPARAM Specifies the wParam value
servlet2.4doc
Overview Package Class Tree Deprecated Index Help PREV NEXT FRAMES NO FRAMES A B C D E F G H I J L P R S U V -------------------------------------------------------------------------------- A addCookie(Cookie) - Method in class javax.servlet.http.HttpServletResponseWrapper The default behavior of this method is to call addCookie(Cookie cookie) on the wrapped response object. addCookie(Cookie) - Method in interface javax.servlet.http.HttpServletResponse Adds the specified cookie to the response. addDateHeader(String, long) - Method in class javax.servlet.http.HttpServletResponseWrapper The default behavior of this method is to call addDateHeader(String name, long date) on the wrapped response object. addDateHeader(String, long) - Method in interface javax.servlet.http.HttpServletResponse Adds a response header with the given name and date-value. addHeader(String, String) - Method in class javax.servlet.http.HttpServletResponseWrapper The default behavior of this method is to return addHeader(String name, String value) on the wrapped response object. addHeader(String, String) - Method in interface javax.servlet.http.HttpServletResponse Adds a response header with the given name and value. addIntHeader(String, int) - Method in class javax.servlet.http.HttpServletResponseWrapper The default behavior of this method is to call addIntHeader(String name, int value) on the wrapped response object. addIntHeader(String, int) - Method in interface javax.servlet.http.HttpServletResponse Adds a response header with the given name and integer value. attributeAdded(HttpSessionBindingEvent) - Method in interface javax.servlet.http.HttpSessionAttributeListener Notification that an attribute has been added to a session. attributeAdded(ServletContextAttributeEvent) - Method in interface javax.servlet.ServletContextAttributeListener Notification that a new attribute was added to the servlet context. attributeAdded(ServletRequestAttributeEvent) - Method in interface javax.servlet.ServletRequestAttributeListener Notification that a new attribute was added to the servlet request. attributeRemoved(HttpSessionBindingEvent) - Method in interface javax.servlet.http.HttpSessionAttributeListener Notification that an attribute has been removed from a session. attributeRemoved(ServletContextAttributeEvent) - Method in interface javax.servlet.ServletContextAttributeListener Notification that an existing attribute has been removed from the servlet context. attributeRemoved(ServletRequestAttributeEvent) - Method in interface javax.servlet.ServletRequestAttributeListener Notification that a new attribute was removed from the servlet request. attributeReplaced(HttpSessionBindingEvent) - Method in interface javax.servlet.http.HttpSessionAttributeListener Notification that an attribute has been replaced in a session. attributeReplaced(ServletContextAttributeEvent) - Method in interface javax.servlet.ServletContextAttributeListener Notification that an attribute on the servlet context has been replaced. attributeReplaced(ServletRequestAttributeEvent) - Method in interface javax.servlet.ServletRequestAttributeListener Notification that an attribute was replaced on the servlet request. -------------------------------------------------------------------------------- B BASIC_AUTH - Static variable in interface javax.servlet.http.HttpServletRequest String identifier for Basic authentication. -------------------------------------------------------------------------------- C CLIENT_CERT_AUTH - Static variable in interface javax.servlet.http.HttpServletRequest String identifier for Client Certificate authentication. clone() - Method in class javax.servlet.http.Cookie Overrides the standard java.lang.Object.clone method to return a copy of this cookie. containsHeader(String) - Method in class javax.servlet.http.HttpServletResponseWrapper The default behavior of this method is to call containsHeader(String name) on the wrapped response object. containsHeader(String) - Method in interface javax.servlet.http.HttpServletResponse Returns a boolean indicating whether the named response header has already been set. contextDestroyed(ServletContextEvent) - Method in interface javax.servlet.ServletContextListener Notification that the servlet context is about to be shut down. contextInitialized(ServletContextEvent) - Method in interface javax.servlet.ServletContextListener Notification that the web application initialization process is starting. Cookie - class javax.servlet.http.Cookie. Creates a cookie, a small amount of information sent by a servlet to a Web browser, saved by the browser, and later sent back to the server. Cookie(String, String) - Constructor for class javax.servlet.http.Cookie Constructs a cookie with a specified name and value. -------------------------------------------------------------------------------- D destroy() - Method in interface javax.servlet.Filter Called by the web container to indicate to a filter that it is being taken out of service. destroy() - Method in interface javax.servlet.Servlet Called by the servlet container to indicate to a servlet that the servlet is being taken out of service. destroy() - Method in class javax.servlet.GenericServlet Called by the servlet container to indicate to a servlet that the servlet is being taken out of service. DIGEST_AUTH - Static variable in interface javax.servlet.http.HttpServletRequest String identifier for Digest authentication. doDelete(HttpServletRequest, HttpServletResponse) - Method in class javax.servlet.http.HttpServlet Called by the server (via the service method) to allow a servlet to handle a DELETE request. doFilter(ServletRequest, ServletResponse) - Method in interface javax.servlet.FilterChain Causes the next filter in the chain to be invoked, or if the calling filter is the last filter in the chain, causes the resource at the end of the chain to be invoked. doFilter(ServletRequest, ServletResponse, FilterChain) - Method in interface javax.servlet.Filter The doFilter method of the Filter is called by the container each time a request/response pair is passed through the chain due to a client request for a resource at the end of the chain. doGet(HttpServletRequest, HttpServletResponse) - Method in class javax.servlet.http.HttpServlet Called by the server (via the service method) to allow a servlet to handle a GET request. doHead(HttpServletRequest, HttpServletResponse) - Method in class javax.servlet.http.HttpServlet Receives an HTTP HEAD request from the protected service method and handles the request. doOptions(HttpServletRequest, HttpServletResponse) - Method in class javax.servlet.http.HttpServlet Called by the server (via the service method) to allow a servlet to handle a OPTIONS request. doPost(HttpServletRequest, HttpServletResponse) - Method in class javax.servlet.http.HttpServlet Called by the server (via the service method) to allow a servlet to handle a POST request. doPut(HttpServletRequest, HttpServletResponse) - Method in class javax.servlet.http.HttpServlet Called by the server (via the service method) to allow a servlet to handle a PUT request. doTrace(HttpServletRequest, HttpServletResponse) - Method in class javax.servlet.http.HttpServlet Called by the server (via the service method) to allow a servlet to handle a TRACE request. -------------------------------------------------------------------------------- E encodeRedirectUrl(String) - Method in class javax.servlet.http.HttpServletResponseWrapper The default behavior of this method is to return encodeRedirectUrl(String url) on the wrapped response object. encodeRedirectUrl(String) - Method in interface javax.servlet.http.HttpServletResponse Deprecated. As of version 2.1, use encodeRedirectURL(String url) instead encodeRedirectURL(String) - Method in class javax.servlet.http.HttpServletResponseWrapper The default behavior of this method is to return encodeRedirectURL(String url) on the wrapped response object. encodeRedirectURL(String) - Method in interface javax.servlet.http.HttpServletResponse Encodes the specified URL for use in the sendRedirect method or, if encoding is not needed, returns the URL unchanged. encodeUrl(String) - Method in class javax.servlet.http.HttpServletResponseWrapper The default behavior of this method is to call encodeUrl(String url) on the wrapped response object. encodeUrl(String) - Method in interface javax.servlet.http.HttpServletResponse Deprecated. As of version 2.1, use encodeURL(String url) instead encodeURL(String) - Method in class javax.servlet.http.HttpServletResponseWrapper The default behavior of this method is to call encodeURL(String url) on the wrapped response object. encodeURL(String) - Method in interface javax.servlet.http.HttpServletResponse Encodes the specified URL by including the session ID in it, or, if encoding is not needed, returns the URL unchanged. -------------------------------------------------------------------------------- F Filter - interface javax.servlet.Filter. A filter is an object that performs filtering tasks on either the request to a resource (a servlet or static content), or on the response from a resource, or both. Filters perform filtering in the doFilter method. FilterChain - interface javax.servlet.FilterChain. A FilterChain is an object provided by the servlet container to the developer giving a view into the invocation chain of a filtered request for a resource. FilterConfig - interface javax.servlet.FilterConfig. A filter configuration object used by a servlet container to pass information to a filter during initialization. flushBuffer() - Method in interface javax.servlet.ServletResponse Forces any content in the buffer to be written to the client. flushBuffer() - Method in class javax.servlet.ServletResponseWrapper The default behavior of this method is to call flushBuffer() on the wrapped response object. FORM_AUTH - Static variable in interface javax.servlet.http.HttpServletRequest String identifier for Form authentication. forward(ServletRequest, ServletResponse) - Method in interface javax.servlet.RequestDispatcher Forwards a request from a servlet to another resource (servlet, JSP file, or HTML file) on the server. -------------------------------------------------------------------------------- G GenericServlet - class javax.servlet.GenericServlet. Defines a generic, protocol-independent servlet. GenericServlet() - Constructor for class javax.servlet.GenericServlet Does nothing. getAttribute(String) - Method in interface javax.servlet.ServletContext Returns the servlet container attribute with the given name, or null if there is no attribute by that name. getAttribute(String) - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to call getAttribute(String name) on the wrapped request object. getAttribute(String) - Method in interface javax.servlet.ServletRequest Returns the value of the named attribute as an Object, or null if no attribute of the given name exists. getAttribute(String) - Method in interface javax.servlet.http.HttpSession Returns the object bound with the specified name in this session, or null if no object is bound under the name. getAttributeNames() - Method in interface javax.servlet.ServletContext Returns an Enumeration containing the attribute names available within this servlet context. getAttributeNames() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getAttributeNames() on the wrapped request object. getAttributeNames() - Method in interface javax.servlet.ServletRequest Returns an Enumeration containing the names of the attributes available to this request. getAttributeNames() - Method in interface javax.servlet.http.HttpSession Returns an Enumeration of String objects containing the names of all the objects bound to this session. getAuthType() - Method in interface javax.servlet.http.HttpServletRequest Returns the name of the authentication scheme used to protect the servlet. getAuthType() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getAuthType() on the wrapped request object. getBufferSize() - Method in interface javax.servlet.ServletResponse Returns the actual buffer size used for the response. getBufferSize() - Method in class javax.servlet.ServletResponseWrapper The default behavior of this method is to return getBufferSize() on the wrapped response object. getCharacterEncoding() - Method in interface javax.servlet.ServletResponse Returns the name of the character encoding (MIME charset) used for the body sent in this response. getCharacterEncoding() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getCharacterEncoding() on the wrapped request object. getCharacterEncoding() - Method in interface javax.servlet.ServletRequest Returns the name of the character encoding used in the body of this request. getCharacterEncoding() - Method in class javax.servlet.ServletResponseWrapper The default behavior of this method is to return getCharacterEncoding() on the wrapped response object. getComment() - Method in class javax.servlet.http.Cookie Returns the comment describing the purpose of this cookie, or null if the cookie has no comment. getContentLength() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getContentLength() on the wrapped request object. getContentLength() - Method in interface javax.servlet.ServletRequest Returns the length, in bytes, of the request body and made available by the input stream, or -1 if the length is not known. getContentType() - Method in interface javax.servlet.ServletResponse Returns the content type used for the MIME body sent in this response. getContentType() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getContentType() on the wrapped request object. getContentType() - Method in interface javax.servlet.ServletRequest Returns the MIME type of the body of the request, or null if the type is not known. getContentType() - Method in class javax.servlet.ServletResponseWrapper The default behavior of this method is to return getContentType() on the wrapped response object. getContext(String) - Method in interface javax.servlet.ServletContext Returns a ServletContext object that corresponds to a specified URL on the server. getContextPath() - Method in interface javax.servlet.http.HttpServletRequest Returns the portion of the request URI that indicates the context of the request. getContextPath() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getContextPath() on the wrapped request object. getCookies() - Method in interface javax.servlet.http.HttpServletRequest Returns an array containing all of the Cookie objects the client sent with this request. getCookies() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getCookies() on the wrapped request object. getCreationTime() - Method in interface javax.servlet.http.HttpSession Returns the time when this session was created, measured in milliseconds since midnight January 1, 1970 GMT. getDateHeader(String) - Method in interface javax.servlet.http.HttpServletRequest Returns the value of the specified request header as a long value that represents a Date object. getDateHeader(String) - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getDateHeader(String name) on the wrapped request object. getDomain() - Method in class javax.servlet.http.Cookie Returns the domain name set for this cookie. getFilterName() - Method in interface javax.servlet.FilterConfig Returns the filter-name of this filter as defined in the deployment descriptor. getHeader(String) - Method in interface javax.servlet.http.HttpServletRequest Returns the value of the specified request header as a String. getHeader(String) - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getHeader(String name) on the wrapped request object. getHeaderNames() - Method in interface javax.servlet.http.HttpServletRequest Returns an enumeration of all the header names this request contains. getHeaderNames() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getHeaderNames() on the wrapped request object. getHeaders(String) - Method in interface javax.servlet.http.HttpServletRequest Returns all the values of the specified request header as an Enumeration of String objects. getHeaders(String) - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getHeaders(String name) on the wrapped request object. getId() - Method in interface javax.servlet.http.HttpSession Returns a string containing the unique identifier assigned to this session. getIds() - Method in interface javax.servlet.http.HttpSessionContext Deprecated. As of Java Servlet API 2.1 with no replacement. This method must return an empty Enumeration and will be removed in a future version of this API. getInitParameter(String) - Method in interface javax.servlet.FilterConfig Returns a String containing the value of the named initialization parameter, or null if the parameter does not exist. getInitParameter(String) - Method in interface javax.servlet.ServletConfig Returns a String containing the value of the named initialization parameter, or null if the parameter does not exist. getInitParameter(String) - Method in interface javax.servlet.ServletContext Returns a String containing the value of the named context-wide initialization parameter, or null if the parameter does not exist. getInitParameter(String) - Method in class javax.servlet.GenericServlet Returns a String containing the value of the named initialization parameter, or null if the parameter does not exist. getInitParameterNames() - Method in interface javax.servlet.FilterConfig Returns the names of the filter's initialization parameters as an Enumeration of String objects, or an empty Enumeration if the filter has no initialization parameters. getInitParameterNames() - Method in interface javax.servlet.ServletConfig Returns the names of the servlet's initialization parameters as an Enumeration of String objects, or an empty Enumeration if the servlet has no initialization parameters. getInitParameterNames() - Method in interface javax.servlet.ServletContext Returns the names of the context's initialization parameters as an Enumeration of String objects, or an empty Enumeration if the context has no initialization parameters. getInitParameterNames() - Method in class javax.servlet.GenericServlet Returns the names of the servlet's initialization parameters as an Enumeration of String objects, or an empty Enumeration if the servlet has no initialization parameters. getInputStream() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getInputStream() on the wrapped request object. getInputStream() - Method in interface javax.servlet.ServletRequest Retrieves the body of the request as binary data using a ServletInputStream. getIntHeader(String) - Method in interface javax.servlet.http.HttpServletRequest Returns the value of the specified request header as an int. getIntHeader(String) - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getIntHeader(String name) on the wrapped request object. getLastAccessedTime() - Method in interface javax.servlet.http.HttpSession Returns the last time the client sent a request associated with this session, as the number of milliseconds since midnight January 1, 1970 GMT, and marked by the time the container received the request. getLastModified(HttpServletRequest) - Method in class javax.servlet.http.HttpServlet Returns the time the HttpServletRequest object was last modified, in milliseconds since midnight January 1, 1970 GMT. getLocalAddr() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getLocalAddr() on the wrapped request object. getLocalAddr() - Method in interface javax.servlet.ServletRequest Returns the Internet Protocol (IP) address of the interface on which the request was received. getLocale() - Method in interface javax.servlet.ServletResponse Returns the locale specified for this response using the ServletResponse.setLocale(java.util.Locale) method. getLocale() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getLocale() on the wrapped request object. getLocale() - Method in interface javax.servlet.ServletRequest Returns the preferred Locale that the client will accept content in, based on the Accept-Language header. getLocale() - Method in class javax.servlet.ServletResponseWrapper The default behavior of this method is to return getLocale() on the wrapped response object. getLocales() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getLocales() on the wrapped request object. getLocales() - Method in interface javax.servlet.ServletRequest Returns an Enumeration of Locale objects indicating, in decreasing order starting with the preferred locale, the locales that are acceptable to the client based on the Accept-Language header. getLocalName() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getLocalName() on the wrapped request object. getLocalName() - Method in interface javax.servlet.ServletRequest Returns the host name of the Internet Protocol (IP) interface on which the request was received. getLocalPort() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getLocalPort() on the wrapped request object. getLocalPort() - Method in interface javax.servlet.ServletRequest Returns the Internet Protocol (IP) port number of the interface on which the request was received. getMajorVersion() - Method in interface javax.servlet.ServletContext Returns the major version of the Java Servlet API that this servlet container supports. getMaxAge() - Method in class javax.servlet.http.Cookie Returns the maximum age of the cookie, specified in seconds, By default, -1 indicating the cookie will persist until browser shutdown. getMaxInactiveInterval() - Method in interface javax.servlet.http.HttpSession Returns the maximum time interval, in seconds, that the servlet container will keep this session open between client accesses. getMethod() - Method in interface javax.servlet.http.HttpServletRequest Returns the name of the HTTP method with which this request was made, for example, GET, POST, or PUT. getMethod() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getMethod() on the wrapped request object. getMimeType(String) - Method in interface javax.servlet.ServletContext Returns the MIME type of the specified file, or null if the MIME type is not known. getMinorVersion() - Method in interface javax.servlet.ServletContext Returns the minor version of the Servlet API that this servlet container supports. getName() - Method in class javax.servlet.ServletContextAttributeEvent Return the name of the attribute that changed on the ServletContext. getName() - Method in class javax.servlet.ServletRequestAttributeEvent Return the name of the attribute that changed on the ServletRequest getName() - Method in class javax.servlet.http.HttpSessionBindingEvent Returns the name with which the attribute is bound to or unbound from the session. getName() - Method in class javax.servlet.http.Cookie Returns the name of the cookie. getNamedDispatcher(String) - Method in interface javax.servlet.ServletContext Returns a RequestDispatcher object that acts as a wrapper for the named servlet. getOutputStream() - Method in interface javax.servlet.ServletResponse Returns a ServletOutputStream suitable for writing binary data in the response. getOutputStream() - Method in class javax.servlet.ServletResponseWrapper The default behavior of this method is to return getOutputStream() on the wrapped response object. getParameter(String) - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getParameter(String name) on the wrapped request object. getParameter(String) - Method in interface javax.servlet.ServletRequest Returns the value of a request parameter as a String, or null if the parameter does not exist. getParameterMap() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getParameterMap() on the wrapped request object. getParameterMap() - Method in interface javax.servlet.ServletRequest Returns a java.util.Map of the parameters of this request. getParameterNames() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getParameterNames() on the wrapped request object. getParameterNames() - Method in interface javax.servlet.ServletRequest Returns an Enumeration of String objects containing the names of the parameters contained in this request. getParameterValues(String) - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getParameterValues(String name) on the wrapped request object. getParameterValues(String) - Method in interface javax.servlet.ServletRequest Returns an array of String objects containing all of the values the given request parameter has, or null if the parameter does not exist. getPath() - Method in class javax.servlet.http.Cookie Returns the path on the server to which the browser returns this cookie. getPathInfo() - Method in interface javax.servlet.http.HttpServletRequest Returns any extra path information associated with the URL the client sent when it made this request. getPathInfo() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getPathInfo() on the wrapped request object. getPathTranslated() - Method in interface javax.servlet.http.HttpServletRequest Returns any extra path information after the servlet name but before the query string, and translates it to a real path. getPathTranslated() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getPathTranslated() on the wrapped request object. getProtocol() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getProtocol() on the wrapped request object. getProtocol() - Method in interface javax.servlet.ServletRequest Returns the name and version of the protocol the request uses in the form protocol/majorVersion.minorVersion, for example, HTTP/1.1. getQueryString() - Method in interface javax.servlet.http.HttpServletRequest Returns the query string that is contained in the request URL after the path. getQueryString() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getQueryString() on the wrapped request object. getReader() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getReader() on the wrapped request object. getReader() - Method in interface javax.servlet.ServletRequest Retrieves the body of the request as character data using a BufferedReader. getRealPath(String) - Method in interface javax.servlet.ServletContext Returns a String containing the real path for a given virtual path. getRealPath(String) - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getRealPath(String path) on the wrapped request object. getRealPath(String) - Method in interface javax.servlet.ServletRequest Deprecated. As of Version 2.1 of the Java Servlet API, use ServletContext.getRealPath(java.lang.String) instead. getRemoteAddr() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getRemoteAddr() on the wrapped request object. getRemoteAddr() - Method in interface javax.servlet.ServletRequest Returns the Internet Protocol (IP) address of the client or last proxy that sent the request. getRemoteHost() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getRemoteHost() on the wrapped request object. getRemoteHost() - Method in interface javax.servlet.ServletRequest Returns the fully qualified name of the client or the last proxy that sent the request. getRemotePort() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getRemotePort() on the wrapped request object. getRemotePort() - Method in interface javax.servlet.ServletRequest Returns the Internet Protocol (IP) source port of the client or last proxy that sent the request. getRemoteUser() - Method in interface javax.servlet.http.HttpServletRequest Returns the login of the user making this request, if the user has been authenticated, or null if the user has not been authenticated. getRemoteUser() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getRemoteUser() on the wrapped request object. getRequest() - Method in class javax.servlet.ServletRequestWrapper Return the wrapped request object. getRequestDispatcher(String) - Method in interface javax.servlet.ServletContext Returns a RequestDispatcher object that acts as a wrapper for the resource located at the given path. getRequestDispatcher(String) - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getRequestDispatcher(String path) on the wrapped request object. getRequestDispatcher(String) - Method in interface javax.servlet.ServletRequest Returns a RequestDispatcher object that acts as a wrapper for the resource located at the given path. getRequestedSessionId() - Method in interface javax.servlet.http.HttpServletRequest Returns the session ID specified by the client. getRequestedSessionId() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getRequestedSessionId() on the wrapped request object. getRequestURI() - Method in interface javax.servlet.http.HttpServletRequest Returns the part of this request's URL from the protocol name up to the query string in the first line of the HTTP request. getRequestURI() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getRequestURI() on the wrapped request object. getRequestURL() - Method in interface javax.servlet.http.HttpServletRequest Reconstructs the URL the client used to make the request. getRequestURL() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getRequestURL() on the wrapped request object. getRequestURL(HttpServletRequest) - Static method in class javax.servlet.http.HttpUtils Deprecated. Reconstructs the URL the client used to make the request, using information in the HttpServletRequest object. getResource(String) - Method in interface javax.servlet.ServletContext Returns a URL to the resource that is mapped to a specified path. getResourceAsStream(String) - Method in interface javax.servlet.ServletContext Returns the resource located at the named path as an InputStream object. getResourcePaths(String) - Method in interface javax.servlet.ServletContext Returns a directory-like listing of all the paths to resources within the web application whose longest sub-path matches the supplied path argument. getResponse() - Method in class javax.servlet.ServletResponseWrapper Return the wrapped ServletResponse object. getRootCause() - Method in class javax.servlet.ServletException Returns the exception that caused this servlet exception. getScheme() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getScheme() on the wrapped request object. getScheme() - Method in interface javax.servlet.ServletRequest Returns the name of the scheme used to make this request, for example, http, https, or ftp. getSecure() - Method in class javax.servlet.http.Cookie Returns true if the browser is sending cookies only over a secure protocol, or false if the browser can send cookies using any protocol. getServerInfo() - Method in interface javax.servlet.ServletContext Returns the name and version of the servlet container on which the servlet is running. getServerName() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getServerName() on the wrapped request object. getServerName() - Method in interface javax.servlet.ServletRequest Returns the host name of the server to which the request was sent. getServerPort() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return getServerPort() on the wrapped request object. getServerPort() - Method in interface javax.servlet.ServletRequest Returns the port number to which the request was sent. getServlet() - Method in class javax.servlet.UnavailableException Deprecated. As of Java Servlet API 2.2, with no replacement. Returns the servlet that is reporting its unavailability. getServlet(String) - Method in interface javax.servlet.ServletContext Deprecated. As of Java Servlet API 2.1, with no direct replacement. This method was originally defined to retrieve a servlet from a ServletContext. In this version, this method always returns null and remains only to preserve binary compatibility. This method will be permanently removed in a future version of the Java Servlet API. In lieu of this method, servlets can share information using the ServletContext class and can perform shared business logic by invoking methods on common non-servlet classes. getServletConfig() - Method in interface javax.servlet.Servlet Returns a ServletConfig object, which contains initialization and startup parameters for this servlet. getServletConfig() - Method in class javax.servlet.GenericServlet Returns this servlet's ServletConfig object. getServletContext() - Method in class javax.servlet.ServletRequestEvent Returns the ServletContext of this web application. getServletContext() - Method in interface javax.servlet.FilterConfig Returns a reference to the ServletContext in which the caller is executing. getServletContext() - Method in interface javax.servlet.ServletConfig Returns a reference to the ServletContext in which the caller is executing. getServletContext() - Method in class javax.servlet.ServletContextEvent Return the ServletContext that changed. getServletContext() - Method in class javax.servlet.GenericServlet Returns a reference to the ServletContext in which this servlet is running. getServletContext() - Method in interface javax.servlet.http.HttpSession Returns the ServletContext to which this session belongs. getServletContextName() - Method in interface javax.servlet.ServletContext Returns the name of this web application corresponding to this ServletContext as specified in the deployment descriptor for this web application by the display-name element. getServletInfo() - Method in interface javax.servlet.Servlet Returns information about the servlet, such as author, version, and copyright. getServletInfo() - Method in class javax.servlet.GenericServlet Returns information about the servlet, such as author, version, and copyright. getServletName() - Method in interface javax.servlet.ServletConfig Returns the name of this servlet instance. getServletName() - Method in class javax.servlet.GenericServlet Returns the name of this servlet instance. getServletNames() - Method in interface javax.servlet.ServletContext Deprecated. As of Java Servlet API 2.1, with no replacement. This method was originally defined to return an Enumeration of all the servlet names known to this context. In this version, this method always returns an empty Enumeration and remains only to preserve binary compatibility. This method will be permanently removed in a future version of the Java Servlet API. getServletPath() - Method in interface javax.servlet.http.HttpServletRequest Returns the part of this request's URL that calls the servlet. getServletPath() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getServletPath() on the wrapped request object. getServletRequest() - Method in class javax.servlet.ServletRequestEvent Returns the ServletRequest that is changing. getServlets() - Method in interface javax.servlet.ServletContext Deprecated. As of Java Servlet API 2.0, with no replacement. This method was originally defined to return an Enumeration of all the servlets known to this servlet context. In this version, this method always returns an empty enumeration and remains only to preserve binary compatibility. This method will be permanently removed in a future version of the Java Servlet API. getSession() - Method in class javax.servlet.http.HttpSessionEvent Return the session that changed. getSession() - Method in class javax.servlet.http.HttpSessionBindingEvent Return the session that changed. getSession() - Method in interface javax.servlet.http.HttpServletRequest Returns the current session associated with this request, or if the request does not have a session, creates one. getSession() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getSession() on the wrapped request object. getSession(boolean) - Method in interface javax.servlet.http.HttpServletRequest Returns the current HttpSession associated with this request or, if there is no current session and create is true, returns a new session. getSession(boolean) - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getSession(boolean create) on the wrapped request object. getSession(String) - Method in interface javax.servlet.http.HttpSessionContext Deprecated. As of Java Servlet API 2.1 with no replacement. This method must return null and will be removed in a future version of this API. getSessionContext() - Method in interface javax.servlet.http.HttpSession Deprecated. As of Version 2.1, this method is deprecated and has no replacement. It will be removed in a future version of the Java Servlet API. getUnavailableSeconds() - Method in class javax.servlet.UnavailableException Returns the number of seconds the servlet expects to be temporarily unavailable. getUserPrincipal() - Method in interface javax.servlet.http.HttpServletRequest Returns a java.security.Principal object containing the name of the current authenticated user. getUserPrincipal() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return getUserPrincipal() on the wrapped request object. getValue() - Method in class javax.servlet.ServletContextAttributeEvent Returns the value of the attribute that has been added, removed, or replaced. getValue() - Method in class javax.servlet.ServletRequestAttributeEvent Returns the value of the attribute that has been added, removed or replaced. getValue() - Method in class javax.servlet.http.HttpSessionBindingEvent Returns the value of the attribute that has been added, removed or replaced. getValue() - Method in class javax.servlet.http.Cookie Returns the value of the cookie. getValue(String) - Method in interface javax.servlet.http.HttpSession Deprecated. As of Version 2.2, this method is replaced by HttpSession.getAttribute(java.lang.String). getValueNames() - Method in interface javax.servlet.http.HttpSession Deprecated. As of Version 2.2, this method is replaced by HttpSession.getAttributeNames() getVersion() - Method in class javax.servlet.http.Cookie Returns the version of the protocol this cookie complies with. getWriter() - Method in interface javax.servlet.ServletResponse Returns a PrintWriter object that can send character text to the client. getWriter() - Method in class javax.servlet.ServletResponseWrapper The default behavior of this method is to return getWriter() on the wrapped response object. -------------------------------------------------------------------------------- H HttpServlet - class javax.servlet.http.HttpServlet. Provides an abstract class to be subclassed to create an HTTP servlet suitable for a Web site. HttpServlet() - Constructor for class javax.servlet.http.HttpServlet Does nothing, because this is an abstract class. HttpServletRequest - interface javax.servlet.http.HttpServletRequest. Extends the ServletRequest interface to provide request information for HTTP servlets. HttpServletRequestWrapper - class javax.servlet.http.HttpServletRequestWrapper. Provides a convenient implementation of the HttpServletRequest interface that can be subclassed by developers wishing to adapt the request to a Servlet. HttpServletRequestWrapper(HttpServletRequest) - Constructor for class javax.servlet.http.HttpServletRequestWrapper Constructs a request object wrapping the given request. HttpServletResponse - interface javax.servlet.http.HttpServletResponse. Extends the ServletResponse interface to provide HTTP-specific functionality in sending a response. HttpServletResponseWrapper - class javax.servlet.http.HttpServletResponseWrapper. Provides a convenient implementation of the HttpServletResponse interface that can be subclassed by developers wishing to adapt the response from a Servlet. HttpServletResponseWrapper(HttpServletResponse) - Constructor for class javax.servlet.http.HttpServletResponseWrapper Constructs a response adaptor wrapping the given response. HttpSession - interface javax.servlet.http.HttpSession. Provides a way to identify a user across more than one page request or visit to a Web site and to store information about that user. HttpSessionActivationListener - interface javax.servlet.http.HttpSessionActivationListener. Objects that are bound to a session may listen to container events notifying them that sessions will be passivated and that session will be activated. HttpSessionAttributeListener - interface javax.servlet.http.HttpSessionAttributeListener. This listener interface can be implemented in order to get notifications of changes to the attribute lists of sessions within this web application. HttpSessionBindingEvent - class javax.servlet.http.HttpSessionBindingEvent. Events of this type are either sent to an object that implements HttpSessionBindingListener when it is bound or unbound from a session, or to a HttpSessionAttributeListener that has been configured in the deployment descriptor when any attribute is bound, unbound or replaced in a session. HttpSessionBindingEvent(HttpSession, String) - Constructor for class javax.servlet.http.HttpSessionBindingEvent Constructs an event that notifies an object that it has been bound to or unbound from a session. HttpSessionBindingEvent(HttpSession, String, Object) - Constructor for class javax.servlet.http.HttpSessionBindingEvent Constructs an event that notifies an object that it has been bound to or unbound from a session. HttpSessionBindingListener - interface javax.servlet.http.HttpSessionBindingListener. Causes an object to be notified when it is bound to or unbound from a session. HttpSessionContext - interface javax.servlet.http.HttpSessionContext. Deprecated. As of Java(tm) Servlet API 2.1 for security reasons, with no replacement. This interface will be removed in a future version of this API. HttpSessionEvent - class javax.servlet.http.HttpSessionEvent. This is the class representing event notifications for changes to sessions within a web application. HttpSessionEvent(HttpSession) - Constructor for class javax.servlet.http.HttpSessionEvent Construct a session event from the given source. HttpSessionListener - interface javax.servlet.http.HttpSessionListener. Implementations of this interface are notified of changes to the list of active sessions in a web application. HttpUtils - class javax.servlet.http.HttpUtils. Deprecated. As of Java(tm) Servlet API 2.3. These methods were only useful with the default encoding and have been moved to the request interfaces. HttpUtils() - Constructor for class javax.servlet.http.HttpUtils Deprecated. Constructs an empty HttpUtils object. -------------------------------------------------------------------------------- I include(ServletRequest, ServletResponse) - Method in interface javax.servlet.RequestDispatcher Includes the content of a resource (servlet, JSP page, HTML file) in the response. init() - Method in class javax.servlet.GenericServlet A convenience method which can be overridden so that there's no need to call super.init(config). init(FilterConfig) - Method in interface javax.servlet.Filter Called by the web container to indicate to a filter that it is being placed into service. init(ServletConfig) - Method in interface javax.servlet.Servlet Called by the servlet container to indicate to a servlet that the servlet is being placed into service. init(ServletConfig) - Method in class javax.servlet.GenericServlet Called by the servlet container to indicate to a servlet that the servlet is being placed into service. invalidate() - Method in interface javax.servlet.http.HttpSession Invalidates this session then unbinds any objects bound to it. isCommitted() - Method in interface javax.servlet.ServletResponse Returns a boolean indicating if the response has been committed. isCommitted() - Method in class javax.servlet.ServletResponseWrapper The default behavior of this method is to return isCommitted() on the wrapped response object. isNew() - Method in interface javax.servlet.http.HttpSession Returns true if the client does not yet know about the session or if the client chooses not to join the session. isPermanent() - Method in class javax.servlet.UnavailableException Returns a boolean indicating whether the servlet is permanently unavailable. isRequestedSessionIdFromCookie() - Method in interface javax.servlet.http.HttpServletRequest Checks whether the requested session ID came in as a cookie. isRequestedSessionIdFromCookie() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return isRequestedSessionIdFromCookie() on the wrapped request object. isRequestedSessionIdFromUrl() - Method in interface javax.servlet.http.HttpServletRequest Deprecated. As of Version 2.1 of the Java Servlet API, use HttpServletRequest.isRequestedSessionIdFromURL() instead. isRequestedSessionIdFromUrl() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return isRequestedSessionIdFromUrl() on the wrapped request object. isRequestedSessionIdFromURL() - Method in interface javax.servlet.http.HttpServletRequest Checks whether the requested session ID came in as part of the request URL. isRequestedSessionIdFromURL() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return isRequestedSessionIdFromURL() on the wrapped request object. isRequestedSessionIdValid() - Method in interface javax.servlet.http.HttpServletRequest Checks whether the requested session ID is still valid. isRequestedSessionIdValid() - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return isRequestedSessionIdValid() on the wrapped request object. isSecure() - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to return isSecure() on the wrapped request object. isSecure() - Method in interface javax.servlet.ServletRequest Returns a boolean indicating whether this request was made using a secure channel, such as HTTPS. isUserInRole(String) - Method in interface javax.servlet.http.HttpServletRequest Returns a boolean indicating whether the authenticated user is included in the specified logical "role". isUserInRole(String) - Method in class javax.servlet.http.HttpServletRequestWrapper The default behavior of this method is to return isUserInRole(String role) on the wrapped request object. -------------------------------------------------------------------------------- J javax.servlet - package javax.servlet This chapter describes the javax.servlet package. javax.servlet.http - package javax.servlet.http This chapter describes the javax.servlet.http package. -------------------------------------------------------------------------------- L log(Exception, String) - Method in interface javax.servlet.ServletContext Deprecated. As of Java Servlet API 2.1, use ServletContext.log(String message, Throwable throwable) instead. This method was originally defined to write an exception's stack trace and an explanatory error message to the servlet log file. log(String) - Method in interface javax.servlet.ServletContext Writes the specified message to a servlet log file, usually an event log. log(String) - Method in class javax.servlet.GenericServlet Writes the specified message to a servlet log file, prepended by the servlet's name. log(String, Throwable) - Method in interface javax.servlet.ServletContext Writes an explanatory message and a stack trace for a given Throwable exception to the servlet log file. log(String, Throwable) - Method in class javax.servlet.GenericServlet Writes an explanatory message and a stack trace for a given Throwable exception to the servlet log file, prepended by the servlet's name. -------------------------------------------------------------------------------- P parsePostData(int, ServletInputStream) - Static method in class javax.servlet.http.HttpUtils Deprecated. Parses data from an HTML form that the client sends to the server using the HTTP POST method and the application/x-www-form-urlencoded MIME type. parseQueryString(String) - Static method in class javax.servlet.http.HttpUtils Deprecated. Parses a query string passed from the client to the server and builds a HashTable object with key-value pairs. print(boolean) - Method in class javax.servlet.ServletOutputStream Writes a boolean value to the client, with no carriage return-line feed (CRLF) character at the end. print(char) - Method in class javax.servlet.ServletOutputStream Writes a character to the client, with no carriage return-line feed (CRLF) at the end. print(double) - Method in class javax.servlet.ServletOutputStream Writes a double value to the client, with no carriage return-line feed (CRLF) at the end. print(float) - Method in class javax.servlet.ServletOutputStream Writes a float value to the client, with no carriage return-line feed (CRLF) at the end. print(int) - Method in class javax.servlet.ServletOutputStream Writes an int to the client, with no carriage return-line feed (CRLF) at the end. print(long) - Method in class javax.servlet.ServletOutputStream Writes a long value to the client, with no carriage return-line feed (CRLF) at the end. print(String) - Method in class javax.servlet.ServletOutputStream Writes a String to the client, without a carriage return-line feed (CRLF) character at the end. println() - Method in class javax.servlet.ServletOutputStream Writes a carriage return-line feed (CRLF) to the client. println(boolean) - Method in class javax.servlet.ServletOutputStream Writes a boolean value to the client, followed by a carriage return-line feed (CRLF). println(char) - Method in class javax.servlet.ServletOutputStream Writes a character to the client, followed by a carriage return-line feed (CRLF). println(double) - Method in class javax.servlet.ServletOutputStream Writes a double value to the client, followed by a carriage return-line feed (CRLF). println(float) - Method in class javax.servlet.ServletOutputStream Writes a float value to the client, followed by a carriage return-line feed (CRLF). println(int) - Method in class javax.servlet.ServletOutputStream Writes an int to the client, followed by a carriage return-line feed (CRLF) character. println(long) - Method in class javax.servlet.ServletOutputStream Writes a long value to the client, followed by a carriage return-line feed (CRLF). println(String) - Method in class javax.servlet.ServletOutputStream Writes a String to the client, followed by a carriage return-line feed (CRLF). putValue(String, Object) - Method in interface javax.servlet.http.HttpSession Deprecated. As of Version 2.2, this method is replaced by HttpSession.setAttribute(java.lang.String, java.lang.Object) -------------------------------------------------------------------------------- R readLine(byte[], int, int) - Method in class javax.servlet.ServletInputStream Reads the input stream, one line at a time. removeAttribute(String) - Method in interface javax.servlet.ServletContext Removes the attribute with the given name from the servlet context. removeAttribute(String) - Method in class javax.servlet.ServletRequestWrapper The default behavior of this method is to call removeAttribute(String name) on the wrapped request object. removeAttribute(String) - Method in interface javax.servlet.ServletRequest Removes an attribute from this request. removeAttribute(String) - Method in interface javax.servlet.http.HttpSession Removes the object bound with the specified name from this session. removeValue(String) - Method in interface javax.servlet.http.HttpSession Deprecated. As of Version 2.2, this method is replaced by HttpSession.removeAttribute(java.lang.String) requestDestroyed(ServletRequestEvent) - Method in interface javax.servlet.ServletRequestListener The request is about to go out of scope of the web application. RequestDispatcher - interface javax.servlet.RequestDispatcher. Defines an object that receives requests from the client and sends them to any resource (such as a servlet, HTML file, or JSP file) on the server. requestInitialized(ServletRequestEvent) - Method in interface javax.servlet.ServletRequestListener The request is about to come into scope of the web application. reset() - Method in interface javax.servlet.ServletResponse Clears any data that exists in the buffer as well as the status code and headers. reset() - Method in class javax.servlet.ServletResponseWrapper The default behavior of this method is to call reset() on the wrapped response object. resetBuffer() - Method in interface javax.servlet.ServletResponse Clears the content of the underlying buffer in the response without clearing headers or status code. resetBuffer() - Method in class javax.servlet.ServletResponseWrapper The default behavior of this method is to call resetBuffer() on the wrapped response object. -------------------------------------------------------------------------------- S SC_ACCEPTED - Static variable in interface javax.servlet.http.HttpServletResponse Status code (202) indicating that a request was accepted for processing, but was not completed. SC_BAD_GATEWAY - Static variable in interface javax.servlet.http.HttpServletResponse Status code (502) indicating that the HTTP server received an invalid response from a server it consulted when acting as a proxy or gateway. SC_BAD_REQUEST - Static variable in interface javax.servlet.http.HttpServletResponse Status code (400) indicating the request sent by the client was syntactically incorrect. SC_CONFLICT - Static variable in interface javax.servlet.http.HttpServletResponse Status code (409) indicating that the request could not be completed due to a conflict with the current state of the resource. SC_CONTINUE - Static variable in interface javax.servlet.http.HttpServletResponse Status code (100) indicating the client can continue. SC_CREATED - Static variable in interface javax.servlet.http.HttpServletResponse Status code (201) indicating the request succeeded and created a new resource on the server. SC_EXPECTATION_FAILED - Static variable in interface javax.servlet.http.HttpServletResponse Status code (417) indicating that the server could not meet the expectation given in the Expect request header. SC_FORBIDDEN - Static variable in interface javax.servlet.http.HttpServletResponse Status code (403) indicating the server understood the request but refused to fulfill it. SC_FOUND - Static variable in interface javax.servlet.http.HttpServletResponse Status code (302) indicating that the resource reside temporarily under a different URI. SC_GATEWAY_TIMEOUT - Static variable in interface javax.servlet.http.HttpServletResponse Status code (504) indicating that the server did not receive a timely response from the upstream server while acting as a gateway or proxy. SC_GONE - Static variable in interface javax.servlet.http.HttpServletResponse Status code (410) indicating that the resource is no longer available at the server and no forwarding address is known. SC_HTTP_VERSION_NOT_SUPPORTED - Static variable in interface javax.servlet.http.HttpServletResponse Status code (505) indicating that the server does not support or refuses to support the HTTP protocol version that was used in the request message. SC_INTERNAL_SERVER_ERROR - Static variable in interface javax.servlet.http.HttpServletResponse Status code (500) indicating an error inside the HTTP server which prevented it from fulfilling the request. SC_LENGTH_REQUIRED - Static variable in interface javax.servlet.http.HttpServletResponse Status code (411) indicating that the request cannot be handled without a defined Content-Length. SC_METHOD_NOT_ALLOWED - Static variable in interface javax.servlet.http.HttpServletResponse Status code (405) indicating that the method specified in the Request-Line is not allowed for the resource identified by the Request-URI. SC_MOVED_PERMANENTLY - Static variable in interface javax.servlet.http.HttpServletResponse Status code (301) indicating that the resource has permanently moved to a new location, and that future references should use a new URI with their requests. SC_MOVED_TEMPORARILY - Static variable in interface javax.servlet.http.HttpServletResponse Status code (302) indicating that the resource has temporarily moved to another location, but that future references should still use the original URI to access the resource. SC_MULTIPLE_CHOICES - Static variable in interface javax.servlet.http.HttpServletResponse Status code (300) indicating that the requested resource corresponds to any one of a set of representations, each with its own specific location. SC_NO_CONTENT - Static variable in interface javax.servlet.http.HttpServletResponse Status code (204) indicating that the request succeeded but that there was no new information to return. SC_NON_AUTHORITATIVE_INFORMATION - Static variable in interface javax.servlet.http.HttpServletResponse Status code (203) indicating that the meta information presented by the client did not originate from the server. SC_NOT_ACCEPTABLE - Static variable in interface javax.servlet.http.HttpServletResponse Status code (406) indicating that the resource identified by the request is only capable of generating response entities which have content characteristics not acceptable according to the accept headers sent in the request. SC_NOT_FOUND - Static variable in interface javax.servlet.http.HttpServletResponse Status code (404) indicating that the requested resource is not available. SC_NOT_IMPLEMENTED - Static variable in interface javax.servlet.http.HttpServletResponse Status code (501) indicating the HTTP server does not support the functionality needed to fulfill the request. SC_NOT_MODIFIED - Static variable in interface javax.servlet.http.HttpServletResponse Status code (304) indicating that a conditional GET operation found that the resource was available and not modified. SC_OK - Static variable in interface javax.servlet.http.HttpServletResponse Status code (200) indicating the request succeeded normally. SC_PARTIAL_CONTENT - Static variable in interface javax.servlet.http.HttpServletResponse Status code (206) indicating that the server has fulfilled the partial GET request for the resource. SC_PAYMENT_REQUIRED - Static variable in interface javax.servlet.http.HttpServletResponse Status code (402) reserved for future use. SC_PRECONDITION_FAILED - Static variable in interface javax.servlet.http.HttpServletResponse Status code (412) indicating that the precondition given in one or more of the request-header fields evaluated to false when it was tested on the server. SC_PROXY_AUTHENTICATION_REQUIRED - Static variable in interface javax.servlet.http.HttpServletResponse Status code (407) indicating that the client MUST first authenticate itself with the proxy. SC_REQUEST_ENTITY_TOO_LARGE - Static variable in interface javax.servlet.http.HttpServletResponse Status code (413) indicating that the server is refusing to process the request because the request entity is larger than the server is willing or able to process. SC_REQUEST_TIMEOUT - Static variable in interface javax.servlet.http.HttpServletResponse Status code (408) indicating that the client did not produce a request within the time that the server was prepared to wait. SC_REQUEST_URI_TOO_LONG - Static variable in interface javax.servlet.http.HttpServletResponse Status code (414) indicating that the server is refusing to service the request because the Request-URI is longer than the server is willing to interpret. SC_REQUESTED_RANGE_NOT_SATISFIABLE - Static variable in interface javax.servlet.http.HttpServletResponse Status code (416) indicating that the server cannot serve the requested byte range. SC_RESET_CONTENT - Static variable in interface javax.servlet.http.HttpServletResponse Status code (205) indicating that the agent SHOULD reset the document view which caused the request to be sent. SC_SEE_OTHER - Static variable in interface javax.servlet.http.HttpServletResponse Status code (303) indicating that the response to the request can be found under a different URI. SC_SERVICE_UNAVAILABLE - Static variable in interface javax.servlet.http.HttpServletResponse Status code (503) indicating that the HTTP server is temporarily overloaded, and unable to handle the request. SC_SWITCHING_PROTOCOLS - Static variable in interface javax.servlet.http.HttpServletResponse Status code (101) indicating the server is switching protocols according to Upgrade header. SC_TEMPORARY_REDIRECT - Static variable in interface javax.servlet.http.HttpServletResponse Status code (307) indicating that the requested resource resides temporarily under a different URI. SC_UNAUTHORIZED - Static variable in interface javax.servlet.http.HttpServletResponse Status code (401) indicating that the request requires HTTP authentication. SC_UNSUPPORTED_MEDIA_TYPE - Static variable in interface javax.servlet.http.HttpServletResponse Status code (415) indicating that the server is refusing to service the request because the entity of the request is in a format not supported by the requested resource for the requested method. SC_USE_PROXY - Static variable in interface javax.servlet.http.HttpServletResponse Status code (305) indicating that the requested resource MUST be accessed through the proxy given by the Location field. sendError(int) - Method in class javax.servlet.http.HttpServletResponseWrapper The default behavior of this method is to call sendError(int sc) on the wrapped response object. sendError(int) - Method in interface javax.servlet.http.HttpServletResponse Sends an error response to the client using the specified status code and clearing the buffer. sendError(int, String) - Method in class javax.servlet.http.HttpServletResponseWrapper The default behavior of this method is to call sendError(int sc, String msg) on the wrapped response object. sendError(int, String) - Method in interface javax.servlet.http.HttpServletResponse Sends an error response to the client using the specified status. sendRedirect(String) - Method in class javax.servlet.http.HttpServletResponseWrapper The default behavior of this method is to return sendRedirect(String location) on the wrapped response object. sendRedirect(String) - Method in interface javax.servlet.http.HttpServletResponse Sends a temporary redirect response to the client using the specified redirect location URL. service(HttpServletRequest, HttpServletResponse) - Method in class javax.servlet.http.HttpServlet Receives standard HTTP requests from the public service method and dispatches them to the doXXX methods defined in this class. service(ServletRequest, ServletResponse) - Method in interfac
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Delphi7.1 Update
Delphi 7.1 Update Release Notes=======================================================This file contains important supplemental and late-breakinginformation that may not appear in the main productdocumentation, and supersedes information contained in otherdocuments, including previously installed release notes.Borland recommends that you read this file in its entirety.NOTE: If you are updating a localized version of Delphi 7, visit the Borland Registered User web site to obtain a localized readme file that may contain important late- breaking information not included in this readme file.IMPORTANT: Delphi must be closed before installing this update. =====================================================CONTENTS * INSTALLING THIS UPDATE * UPDATING LOCALIZED VERSIONS OF DELPHI 7 * KNOWN ISSUES * ISSUES ADDRESSED BY THIS UPDATE - IDE - CORE DATABASE - DATASNAP - DBGO (ADO COMPONENTS) - dbExpress - dbExpress COMPONENTS AND DB VCL - dbExpress CORE DRIVER AND METADATA - dbExpress VENDOR ISSUES - dbExpress CERTIFICATION - WEB SNAP - ACTIVEX - COMPILER - RTL - VCL - THIRD PARTY - BOLD FOR DELPHI * VERIFYING THAT THE UPDATE WAS SUCCESSFUL * FILES INSTALLED BY THIS UPDATE =======================================================INSTALLING THIS UPDATE* This update can not be applied to Delphi 7 Architect Trial version. * This update can not be removed after it is installed.* You will need the original Delphi 7 installation CD available to install this update.* To install this update from the CD, insert the CD, and launch the d7_ent_upd1.exe file appropriate for your locale.* To install this update from the Web, double-click the self-executing installation file and follow the prompts. * The Delphi 7 documentation PDF files are available on the update CD.========================================================UPDATING LOCALIZED VERSIONS OF DELPHI 7* This update can be applied only to the English version of Delphi 7. There are separate updates for the German, French and Japanese ver
tomcat 404：The requested resource is not available
今天给代码添加监听器机制 所有的页面都404 检查日志，tomcat正常启动 [20/Oct/2018:11:38:39 +0800] “GET /MYchatroom/ HTTP/1.1” 404 973 考虑多半是xml的问题 &lt;!--注册监听器 --&gt; &lt;listener&gt; &lt;listener-class&gt;Chat/MyServletContext...
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