downlistsservlet.java

运用jsp/servlet技术 通过bs方式 在网上购买MP3

package com.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class DownListsServlet extends HttpServlet {

		 public DownListsServlet(){ }
		 
	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException,IOException{
		 
		//保存文件中文问题
		String fileName="购物清单_"+getTime();
		
		
		//先把中文转化成字节数组
		byte[] buff = fileName.getBytes("gb2312");
		//iso-8859-1形式的字符串
		fileName = new String(buff,"iso-8859-1");
		
		

		response.setContentType("application/vnd.ms-excel;charset=gb2312");
		
		response.setHeader("Content-Disposition", "attachment;filename="+fileName+".xls");
		
		
		//request.getRequestDispatcher("..jsp/List.jsp").include(request, response);
		
	
	
		
		response.setContentType("text/html");
		PrintWriter out=response.getWriter();
		
		
		out.flush();
		out.close();
	}
	public void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException ,IOException{
		doGet(request,response);
	}
	  private String getTime(){
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd_hh_mm_ss");
		return sdf.format(new Date());
	}
}