求上传和下载的JSP源代码，高分相送，最好没有bean的-CSDN社区

zhaolihhy 2002-08-31

还是错误！！
type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: upload failed.
at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:471)
at org.apache.jsp.fileUpLoadOp$jsp._jspService(fileUpLoadOp$jsp.java:94)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:201)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:381)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:473)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:646)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:483)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:646)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:483)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2349)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:646)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:644)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:171)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:644)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:483)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:646)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:469)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:644)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:483)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:405)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:376)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:508)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:518)
at java.lang.Thread.run(Thread.java:536)

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zhaolihhy 2002-08-31

为什么不说出来？？？？我还是迷糊，求你了

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rain_ok 2002-05-27

我是大迷糊，我知道是咋回事了，^_^

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rain_ok 2002-05-27

呜，我被欺骗了，搞不定阿，我将程序改为
import java.io.*;
public class fileLoad {
public fileLoad() {
}
public void uploadFile(javax.servlet.http.HttpServletRequest req) throws IOException,Exception {
try {
String contentType=req.getContentType();
int contentLength=req.getContentLength();
java.io.DataInputStream bis=new java.io.DataInputStream(req.getInputStream());
int once = 0;
int total = 0;
byte[] buffer=new byte[contentLength];
while ((total<contentLength) && (once>=0)) {
once = bis.read(buffer,total,contentLength);
total += once;
}
int boundaryStart=contentType.indexOf("boundary=");
boundaryStart=boundaryStart+"boundary=".length();
String boundary="--"+contentType.substring(boundaryStart);
int pos=getFormNameIndex(buffer,"filename=\"".getBytes(),1)+"filename=\"".length();
int posEnd=getFormNameIndex(buffer,"\"".getBytes(),pos);
String filename=new String(buffer,pos,posEnd-pos);
pos=filename.lastIndexOf(".");
String filenames=System.currentTimeMillis()/1000+filename.substring(pos);
pos=getFormNameIndex(buffer,"Content-Type: ".getBytes(),1);
pos=getFormNameIndex(buffer,"\r\n".getBytes(),pos+1)+4;
int endpos=getFormNameIndex(buffer,boundary.getBytes(),pos+20);
int len=endpos-pos;
java.io.DataOutputStream bos= new java.io.DataOutputStream(new java.io.FileOutputStream(new java.io.File(filename,filenames)));
bos.write(buffer,pos,len);
bis.close();
bos.close();
}catch(Exception exc) {
throw new Exception("upload failed.");
}finally{

}
}
private int getFormNameIndex(byte[] source,byte[] formname,int start) {
int soulen=source.length;
int sealen=formname.length;
boolean hasSearch=false;
int pos=-1;
for(int i=start;i<soulen;i++) {
if(source[i]==formname[0]) {
boolean hasSear=true;
for(int k=1;k<sealen;k++) {
if(source[i+k]!=formname[k]) {
hasSear=false;
break;
}
}
hasSearch=hasSear;
}
if(hasSearch) {
pos=i;
break;
}
}
return pos;
}
}
然后编译，但是它说 Unable to compile class for JSPNote: sun.tools.javac.Main has been deprecated.
error: File D:\tomcat\webapps\examples\WEB-INF\classes\learn\load\fileLoad.class does not contain type learn.load.fileLoad as expected, but type fileLoad. Please remove the file, or make sure it appears in the correct subdirectory of the class path.

气坏我了

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rain_ok 2002-05-27

^_^，我搞定了，就那么简单？不见得阿，^_^

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zijianyi 2002-05-27

呵呵，bean很简单呀，放在指定的文件夹里不就完了？

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rain_ok 2002-05-27

java.io.DataOutputStream bos= new java.io.DataOutputStream(new java.io.FileOutputStream(new java.io.File(filepath,filenames)));
出错了，在编译的时候显示错误cannot resolve symbol

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rain_ok 2002-05-27

哦？在哪里？

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bistone 2002-05-27

去下载个JSPSMARTUPLOAD吧，很好用的，不过没有源码

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rain_ok 2002-05-27

很简单，因为我不懂BEAN

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saintKnight 2002-05-27

上载：
public void uploadFile(javax.servlet.http.HttpServletRequest req) throws IOException,Exception {
try {
String contentType=req.getContentType();
int contentLength=req.getContentLength();
java.io.DataInputStream bis=new java.io.DataInputStream(req.getInputStream());
int once = 0;
int total = 0;
byte[] buffer=new byte[contentLength];
while ((total<contentLength) && (once>=0)) {
once = bis.read(buffer,total,contentLength);
total += once;
}
int boundaryStart=contentType.indexOf("boundary=");
boundaryStart=boundaryStart+"boundary=".length();
String boundary="--"+contentType.substring(boundaryStart);
int pos=getFormNameIndex(buffer,"filename=\"".getBytes(),1)+"filename=\"".length();
int posEnd=getFormNameIndex(buffer,"\"".getBytes(),pos);
String filename=new String(buffer,pos,posEnd-pos);
pos=filename.lastIndexOf(".");
String filenames=System.currentTimeMillis()/1000+filename.substring(pos);
pos=getFormNameIndex(buffer,"Content-Type: ".getBytes(),1);
pos=getFormNameIndex(buffer,"\r\n".getBytes(),pos+1)+4;
int endpos=getFormNameIndex(buffer,boundary.getBytes(),pos+20);
int len=endpos-pos;
java.io.DataOutputStream bos= new java.io.DataOutputStream(new java.io.FileOutputStream(new java.io.File(filepath,filenames)));
bos.write(buffer,pos,len);
bis.close();
bos.close();
}catch(Exception exc) {
throw new Exception("upload failed.");
}finally{

}
}
private int getFormNameIndex(byte[] source,byte[] formname,int start) {
int soulen=source.length;
int sealen=formname.length;
boolean hasSearch=false;
int pos=-1;
for(int i=start;i<soulen;i++) {
if(source[i]==formname[0]) {
boolean hasSear=true;
for(int k=1;k<sealen;k++) {
if(source[i+k]!=formname[k]) {
hasSear=false;
break;
}
}
hasSearch=hasSear;
}
if(hasSearch) {
pos=i;
break;
}
}
return pos;
}
JSP页面：
<%@ page contentType="text/html; charset=GBK" %>
<html>
<head>
<title>
fileUpLoad
</title>
</head>
<body>
<form name=fileload method=post action="fileUpLoadOp.jsp">
文件名：<input type="file" name="filename"><br>
文件夹：<input type="checkbox" name="uploadfolder" value="1">
<input type="submit" name="submit" value="上载">
</form>
</body>
</html>
JSP处理页面：
<jsp:useBean id="fload" scope="page" class="learn.load.fileLoad" />
<%
fload.uploadFile(request);
%>

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zijianyi 2002-05-27

这也要呀.......为什么不要bean的呀？

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saintKnight 2002-05-27

下载：
package learn.load;

/**
* Title: 学习servlet
* Description:
* Copyright: Copyright (c) 2002
* Company:
* @author
* @version 1.0
*/
import java.io.*;
public class FileDownLoad {

public FileDownLoad() {
}
public void fileDown(String aFileName,javax.servlet.http.HttpServletResponse response) throws Exception {
java.io.BufferedInputStream iin;
BufferedOutputStream dout;
try {
File ff=new File(aFileName);
if(!ff.exists()){
throw new Exception("对不起! 您下载的文件不存在");
}else{
byte[] buffer;
int length=(new Long(ff.length())).intValue();
buffer=new byte[length];
try{
iin=new BufferedInputStream(new java.io.FileInputStream(ff));
//设置类型和头信息
response.setContentType( "application/octet-stream" ); // MIME type for pdf doc
int pos=aFileName.lastIndexOf("\\");
aFileName=aFileName.substring(pos+1);
pos=aFileName.lastIndexOf(".");
aFileName="download"+aFileName.substring(pos);
response.setHeader("Content-disposition", "attachment; filename=" +aFileName);
//传送数据
dout = new BufferedOutputStream( response.getOutputStream());
int once = 0;
int total = 0;
while ((total<length) && (once>=0)) {
once = iin.read(buffer,total,length);
total += once;
dout.write(buffer,0,length);
}
if(iin!=null){ iin.close();}
if(dout!=null){ dout.close();}
}catch(Exception ex){
throw new Exception("文件下载过程中出现错误! ");
}
}
}catch(Exception ex) {
throw new Exception("文件下载过程中出现错误! ");
}
}
}
JSP页面：
<%@ page contentType="text/html; charset=GBK" %>
<html>
<head>
<title>
fileDownLoad
</title>
</head>
<jsp:useBean id="fload" scope="page" class="learn.load.FileDownLoad" />
<body>
<%
String filename=request.getParameter("filename");
if(filename!=null) fload.fileDown(filename,response);
%>
<form name=fileload method=post action="fileDownLoad.jsp">
文件名：<input type="file" name="filename"><br>
<input type="submit" name="submit" value="下载">
</form>
</body>
</html>

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