文件下载

<%@page import="java.net.URLEncoder"%>
<%@page import="java.io.OutputStream"%>
<%@page import="java.io.FileInputStream"%>
<%@page import="java.io.File"%>
<%@page import="java.io.InputStream"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%
	String path = application.getRealPath("./images/Tulips.jpg");
	File file = new File(path);
	InputStream is = new FileInputStream(file);
	
	response.setHeader("Content-disposition","attachment;filename="+URLEncoder.encode(file.getName(),"UTF-8"));
	
	OutputStream os = response.getOutputStream();
	
	byte buffer[] = new byte[1024];
	int len= 0;
	while((len  = is.read(buffer))!=-1){
		os.write(buffer, 0, len);
	}
		os.flush();
		os.close();
		is.close();
%>