download.java

一个bbs论坛系统

package com.lovo.servlet;

import java.io.*;
import java.io.FileInputStream;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class Download extends HttpServlet {
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.setCharacterEncoding("utf-8");
		response.setContentType("application/octet.stream");
		//response.setContentType("image/gif");
		String url = request.getParameter("url");
		url = new String(url.getBytes("iso-8859-1"),"utf-8");
		System.out.println("url = "+url);
		//String fileName =request.getParameter("name");
		byte buf[] = new byte[1024];
		FileInputStream in = new FileInputStream(url);
		OutputStream out = response.getOutputStream();
		//OutputStream fout = new FileOutputStream("E:/"+fileName);
		while(true){
			int len = in.read(buf);
			if(len==-1){
				break;
			}
			out.write(buf,0,len);
			//fout.write(buf,0,len);
		}
		out.flush();
		//fout.flush();
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}

}