【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);
	}


}