JSP流上载
http://blog.csdn.net/ecjtuxuan/archive/2008/02/14/2093757.aspx
<%@ page language="java" pageEncoding="utf-8"%>
<%@ page import="java.io.OutputStream,java.io.File,java.io.FileInputStream"%>
<html>
<head>
<title>JSP流文件下载</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
</head>
<body>
<%
response.reset();
OutputStream o =response.getOutputStream();
byte b[]=new byte[500];
String path = "e:\\mysql.sql";
//String path = request.getSession().getServletContext().getRealPath("/");
// if(path.endsWith("\\"))
//{
// path+="upload\\excelfiles\\TransInfo.xls";
//}
//else
//{
// path+="upload\\excelfiles\\TransInfo.xls";
//}
File fileLoad=new File(path);
response.reset();
response.setCharacterEncoding("GBK");
request.setCharacterEncoding("GBK");
response.setHeader("Content-disposition","attachment;filename="+"mysql.sql");
response.setContentType("application/x-download");
long fileLength=fileLoad.length();
String length=String.valueOf(fileLength);
response.setHeader("Content_Length",length);
FileInputStream in=new FileInputStream(fileLoad);
int n=0;
while((n=in.read(b))!=-1){
o.write(b,0,n);
}
in.close();
o.close();
%>
</body>
</html>