Servlet中文图片下载--学习笔记

java源码

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

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

public class Filedown extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        ServletContext context =  this.getServletContext();
        String path = context.getRealPath("/images/神奇的图片.JPG");
        File file = new File(path);
        response.setHeader("content-disposition", "attachment;filename="+URLEncoder.encode(file.getName(),"UTF-8"));
           //输入流
        InputStream is = new FileInputStream(file);
                //输出流
        OutputStream os = response.getOutputStream();
                //字节流
        byte[] buf = new byte[1024];
        int len = 0;
        while((len = is.read(buf)) > 0)
        {
            os.write(buf,0,len);
        }
        is.close();
        os.close();
    }

}

html

  
    
    
  
      
    下载中文文件
  

结果