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tomcat-7_API_帮助文档

================================================================================ Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. ================================================================================ Apache Tomcat Version 7.0.57 Release Notes ========= CONTENTS: ========= * Dependency Changes * API Stability * JNI Based Applications * Bundled APIs * Web application reloading and static fields in shared libraries * Tomcat on Linux * Enabling SSI and CGI Support * Security manager URLs * Symlinking static resources * Viewing the Tomcat Change Log * Cryptographic software notice * When all else fails =================== Dependency Changes: =================== Tomcat 7.0 is designed to run on Java SE 6 and later. In addition, Tomcat 7.0 uses the Eclipse JDT Java compiler for compiling JSP pages. This means you no longer need to have the complete Java Development Kit (JDK) to run Tomcat, but a Java Runtime Environment (JRE) is sufficient. The Eclipse JDT Java compiler is bundled with the binary Tomcat distributions. Tomcat can also be configured to use the compiler from the JDK to compile JSPs, or any other Java compiler supported by Apache Ant. ============== API Stability: ============== The public interfaces for the following classes are fixed and will not be changed at all during the remaining lifetime of the 7.x series: - javax/**/* The public interfaces for the following classes may be added to in order to resolve bugs and/or add new features. No existing interface will be removed or changed although it may be deprecated. - org/apache/catalina/* - org/apache/catalina/comet/* Note: As Tomcat 7 matures, the above list will be added to. The list is not considered complete at this time. The remaining classes are considered part of the Tomcat internals and may change without notice between point releases. ======================= JNI Based Applications: ======================= Applications that require native libraries must ensure that the libraries have been loaded prior to use. Typically, this is done with a call like: static { System.loadLibrary("path-to-library-file"); } in some class. However, the application must also ensure that the library is not loaded more than once. If the above code were placed in a class inside the web application (i.e. under /WEB-INF/classes or /WEB-INF/lib), and the application were reloaded, the loadLibrary() call would be attempted a second time. To avoid this problem, place classes that load native libraries outside of the web application, and ensure that the loadLibrary() call is executed only once during the lifetime of a particular JVM. ============= Bundled APIs: ============= A standard installation of Tomcat 7.0 makes all of the following APIs available for use by web applications (by placing them in "lib"): * annotations-api.jar (Annotations package) * catalina.jar (Tomcat Catalina implementation) * catalina-ant.jar (Tomcat Catalina Ant tasks) * catalina-ha.jar (High availability package) * catalina-tribes.jar (Group communication) * ecj-4.4.jar (Eclipse JDT Java compiler) * el-api.jar (EL 2.2 API) * jasper.jar (Jasper 2 Compiler and Runtime) * jasper-el.jar (Jasper 2 EL implementation) * jsp-api.jar (JSP 2.2 API) * servlet-api.jar (Servlet 3.0 API) * tomcat7-websocket.jar (WebSocket 1.1 implementation) * tomcat-api.jar (Interfaces shared by Catalina and Jasper) * tomcat-coyote.jar (Tomcat connectors and utility classes) * tomcat-dbcp.jar (package renamed database connection pool based on Commons DBCP) * tomcat-jdbc.jar (Tomcat's database connection pooling solution) * tomcat-util.jar (Various utilities) * websocket-api.jar (WebSocket 1.1 API) You can make additional APIs available to all of your web applications by putting unpacked classes into a "classes" directory (not created by default), or by placing them in JAR files in the "lib" directory. To override the XML parser implementation or interfaces, use the endorsed mechanism of the JVM. The default configuration defines JARs located in "endorsed" as endorsed. ================================================================ Web application reloading and static fields in shared libraries: ================================================================ Some shared libraries (many are part of the JDK) keep references to objects instantiated by the web application. To avoid class loading related problems (ClassCastExceptions, messages indicating that the classloader is stopped, etc.), the shared libraries state should be reinitialized. Something which might help is to avoid putting classes which would be referenced by a shared static field in the web application classloader, and putting them in the shared classloader instead (JARs should be put in the "lib" folder, and classes should be put in the "classes" folder). ================ Tomcat on Linux: ================ GLIBC 2.2 / Linux 2.4 users should define an environment variable: export LD_ASSUME_KERNEL=2.2.5 Redhat Linux 9.0 users should use the following setting to avoid stability problems: export LD_ASSUME_KERNEL=2.4.1 There are some Linux bugs reported against the NIO sendfile behavior, make sure you have a JDK that is up to date, or disable sendfile behavior in the Connector.<br/> 6427312: (fc) FileChannel.transferTo() throws IOException "system call interrupted"<br/> 5103988: (fc) FileChannel.transferTo should return -1 for EAGAIN instead throws IOException<br/> 6253145: (fc) FileChannel.transferTo on Linux fails when going beyond 2GB boundary<br/> 6470086: (fc) FileChannel.transferTo(2147483647, 1, channel) cause "Value too large" exception<br/> ============================= Enabling SSI and CGI Support: ============================= Because of the security risks associated with CGI and SSI available to web applications, these features are disabled by default. To enable and configure CGI support, please see the cgi-howto.html page. To enable and configue SSI support, please see the ssi-howto.html page. ====================== Security manager URLs: ====================== In order to grant security permissions to JARs located inside the web application repository, use URLs of of the following format in your policy file: file:${catalina.base}/webapps/examples/WEB-INF/lib/driver.jar ============================ Symlinking static resources: ============================ By default, Unix symlinks will not work when used in a web application to link resources located outside the web application root directory. This behavior is optional, and the "allowLinking" flag may be used to disable the check. ============================== Viewing the Tomcat Change Log: ============================== See changelog.html in this directory. ============================= Cryptographic software notice ============================= This distribution includes cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See <http://www.wassenaar.org/> for more information. The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this Apache Software Foundation distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code. The following provides more details on the included cryptographic software: - Tomcat includes code designed to work with JSSE - Tomcat includes code designed to work with OpenSSL ==================== When all else fails: ==================== See the FAQ http://tomcat.apache.org/faq/

弱电网下光伏并网逆变器序阻抗建模仿真复现扫频法【序阻抗判断稳定性】

内容概要：本文聚焦于弱电网条件下光伏并网逆变器的序阻抗建模与稳定性分析，系统阐述了基于扫频法的阻抗特性仿真与复现方法。通过构建正负序阻抗模型，深入剖析逆变器在弱电网环境中的动态响应特性，结合锁相环、电流环等关键控制环节对系统阻抗的影响机制，采用序阻抗稳定性判据评估多机并网或复杂电网条件下的系统稳定裕度。研究在Simulink平台中实现激励信号注入、频率响应采集与阻抗曲线绘制，为高比例新能源接入背景下并网系统的稳定性分析提供了可靠的仿真手段与理论支撑，尤其适用于SCI级别论文成果的复现与拓展验证。; 适合人群：电力电子、新能源并网技术及相关领域的硕士/博士研究生、科研人员，以及从事光伏逆变器、微电网稳定控制开发的工程技术人员。; 使用场景及目标：①掌握扫频法在电力电子装置阻抗建模中的具体实施流程；②理解并应用基于序阻抗的稳定性判据进行系统稳定边界分析；③用于高水平学术论文（如SCI期刊）中阻抗建模与稳定性分析部分的仿真复现与方法验证； 阅读建议：建议读者结合文中所述方法与提供的参考文献，自主搭建Simulink仿真模型，逐步完成扰动信号设计、数据采集、傅里叶分析及阻抗拟合全过程，深入探究控制参数变化对系统阻抗特性和稳定性的具体影响，强化理论与实践的融合能力。

三相并网逆变器虚拟阻抗+统一有源阻尼策略SVPWM+SPWM调制仿真

内容概要：本文档系统性地介绍了三相并网逆变器的核心控制技术及其在复杂电网环境下的仿真应用，重点涵盖虚拟阻抗与统一有源阻尼策略在SVPWM和SPWM调制方式下的实现方法，旨在提升逆变器的稳定性与电能质量。内容包括无功功率扰动孤岛检测、中点电位平衡控制、低电压穿越（LVRT）、模型预测控制（MPC）、正负序分离、电网前馈控制等关键技术，并扩展至风储联合调频、微电网下垂控制、虚拟同步发电机（VSG）、构网型逆变器等多种典型电力系统应用场景。所有技术均配有基于Simulink/Matlab平台的完整仿真模型、参考文献及说明文档，强调理论分析与仿真实践的深度融合，突出科研中“借力”与创新思维的重要性。; 适合人群：电气工程、自动化、新能源等相关专业的研究生、科研人员及从事电力电子与可再生能源系统开发的工程师；具备MATLAB/Simulink仿真基础和电力系统专业知识的技术人员。; 使用场景及目标：①开展三相并网逆变器控制策略的研究与优化设计；②复现高水平学术论文中的控制算法；③完成毕业课题、科研项目或工程仿真验证；④掌握虚拟阻抗、有源阻尼、SVPWM/SPWM调制、MPC、VSG等核心技术的建模与实现方法；⑤支撑微电网、构网型变流器等前沿方向的科研攻关。; 阅读建议：建议按照资源目录结构化学习，优先选择与自身研究方向契合的内容模块，结合提供的仿真模型、参考文献和说明材料进行实操演练，注重从理论推导到仿真实现的全过程理解，充分利用共享网盘资源深化技术掌握，提升科研效率与创新能力。

chromedriver-win32-159.0.8133.0(Canary).zip

chromedriver-win32-159.0.8133.0(Canary).zip

计算机“101计划”《人工智能引论》教学大纲+课件+实训案例

计算机“101计划”《人工智能引论》教学大纲+课件+实训案例