小弟最近正在努力JSP，遇到个问题，希望大虾们帮下忙，小弟不胜感激！！！文件上传问题
上传页面：<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<%@ page import="user.file.UpFile" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.
<html xmlns="http://www.
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>
<body bgcolor="cyan">
<jsp:useBean id="upFile" class="user.file.UpFile" scope="session" />
<p>选择要上传的文件:<br>
<form action="" method="post" enctype="multipart/form-data">
<input type="file" name="boy" size="45" />
<br><input type="submit" name="g" value="提交" />
</form>
<% upFile.setRequest(request);
upFile.setSession(session);
%>
<jsp:getProperty name="upFile" property="upFileMessage" />
<p>如果上传的事图像文件，可单击超链接查看图像:
<br><a href="show.jsp">查看图像</a>
</body>
</html>
查看页面：
<%@ page contentType="text/html; Charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.
<html xmlns="http://www.
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>
<body>
<jsp:useBean id="upFile" class="user.file.UpFile" scope="session" />
<%
String pic=(String)session.getAttribute("Name");
out.print(pic);
out.print("<img src="+pic+" width=200 height=200></img>");
%>
</body>
</html>
下面是ｊａｖａ ｂｅａｎ文件：
package user.file;
import *;
import javax.servlet.http.*;
public class UpFile{
HttpServletRequest request;
HttpSession session;
String upFileMessage="";
public void setRequest(HttpServletRequest request){
this.request=request;
}
public void setSession(HttpSession session){
this.session=session;
}
public String getUpFileMessage(){
String fileName=null;
try{
String tempFileName=(String)session.getId();
File f1=new File("E:\\Mysite",tempFileName);
FileOutputStream o=new FileOutputStream(f1);
InputStream in=request.getInputStream();
byte b[]=new byte[10000];
int n;
while((n=in.read(b))!=-1){
o.write(b,0,n);
}
o.close();
in.close();
RandomAccessFile random=new RandomAccessFile(f1,"r");
int second=1;
String secondLine=null;
while(second<=2){
secondLine=random.readLine();
second++;
}
int position=secondLine.lastIndexOf('\\');
fileName=secondLine.substring(position+1,secondLine.length()-1);
byte cc[]=fileName.getBytes("ISO-8859-1");
fileName=new String(cc);
session.setAttribute("Name",fileName);
random.seek(0);
long forthEndPosition=0;
int forth=1;
while((n=random.readByte())!=-1&&(forth<=4)){
if(n=='\n'){
forthEndPosition=random.getFilePointer();
forth++;
}
}
File f2=new File("E:\\Mysite",fileName);
RandomAccessFile random2=new RandomAccessFile(f2,"rw");
random.seek(random.length());
long endPosition=random.getFilePointer();
long mark=endPosition;
int j=1;
while((mark>=0)&&(j<=6)){
mark--;
random.seek(mark);
n=random.readByte();
if(n=='\n'){
endPosition=random.getFilePointer();
j++;
}
}
random.seek(forthEndPosition);
long startPoint=random.getFilePointer();
while(startPoint<endPosition-1){
n=random.readByte();
random2.write(n);
startPoint=random.getFilePointer();
}
random2.close();
random.close();
f1.delete();
upFileMessage=fileName+" Successfully UpLoad";
return upFileMessage;
}
catch(Exception exp){
if(fileName!=null){
upFileMessage=fileName+" Fail to UpLoad";
return upFileMessage;
}
else{
upFileMessage="";
return upFileMessage;
}
}
}
}
小弟正在苦恼中，歇歇各位大虾了！！！
