【JSP开发】关于下载文件response的设置

package cn.edu.Response;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.net.URLEncoder;

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

import org.omg.CORBA_2_3.portable.OutputStream;

public class ResponseDemo3 extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String path=this.getServletContext().getRealPath("/download/阿木木.jpg");
String filename=path.substring(path.lastIndexOf("\\")+1);

//如果下载名是中文，则文件名需要经过url编码URLEncoder.encode(filename,"UTF-8")(平常直接+文件名即可)
response.setHeader("content-disposition", "attachment;filename="+URLEncoder.encode(filename,"UTF-8"));

InputStream in=null;
ServletOutputStream out=null;
try{
in=new FileInputStream(path);
int len=0;
byte buffer[] = new byte[1024];
out=response.getOutputStream();
while((len=in.read(buffer))>0)
{
out.write(buffer,0,len);
}
}finally{
if(in!=null){
try{
in.close();
}catch(Exception e){
e.printStackTrace();
}
}
if(in!=null){
try{
out.close();
}catch(Exception e){
e.printStackTrace();
}
}
}

}

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

}