JSP 다운로드시 헤더 ㅡㅡ

이거 원 만들때 마다 새로 만드니 당췌ㅡㅡ

 

Tomcat 4.1.30 + window XP SP2 단독 테스트

Tomcat 4.1.24 + Apache 2.0.43(맞나??) + linux  테스트.

 

IE 6.0 / Firefox 만 딱 두번씩 테스트 했네 ㅡㅡ

 

package com.javarush.util;

 

import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.nio.channels.Channels;
import java.nio.channels.FileChannel;
import java.nio.channels.WritableByteChannel;

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

 

/**
 * @author Tornado
 */
public class DownloadUtil {
   
    private File file;
    private HttpServletRequest req;
    private HttpServletResponse res;
   
    public DownloadUtil(){   }
   
    public DownloadUtil(File file, HttpServletRequest req, HttpServletResponse res ){
       
        this.file = file;
        this.req = req;
        this.res = res;
       
    }
     
    public void sendFile() throws Exception{
       
        if(!(file.isFile() && file.exists())){
           
            throw new Exception("file.not.found");
           
        }
 
        if(!initResponse()){
           
            throw new Exception("download.failure");
           
        }
       
        FileInputStream fin = null;
       
        FileChannel inputChannel = null;
       
        WritableByteChannel outputChannel = null;
       
        try{
           
            fin = new FileInputStream(file);
           
            inputChannel = fin.getChannel();
           
            outputChannel = Channels.newChannel(res.getOutputStream());
           
            inputChannel.transferTo(0, fin.available(), outputChannel);
           
        }catch(Exception e){
           
            throw e;
           
        }finally{
           
            try{
               
                if(fin != null) fin.close();
            
             if(inputChannel.isOpen()) inputChannel.close();
            
             if(outputChannel.isOpen()) outputChannel.close();
            
            }catch(Exception e){
               
            }
           
        }
       
    }
       
    public boolean initResponse() throws Exception{
        
        if(res == null || req == null) return false;
       
        if(file == null)  return false;
       
        res.setContentType("appliction/octet-stream");
       
        res.setHeader("Accept-Ranges","bytes");
       
  if (req.getHeader("User-Agent").indexOf("MSIE 5.5") > -1) {
      // IE 6.0 Test Ok
   res.setHeader("Content-Disposition", "filename=" + java.net.URLEncoder.encode(file.getName(), "UTF-8") + ";");
   
  } else if(req.getHeader("User-Agent").indexOf("Mozilla/5.0") > -1){
      // firefox Test Ok
      if(req.getServerPort() == 8080){
         
          res.setHeader("Content-Disposition", "filename=" + new String(file.getName().getBytes("KSC5601"), "ISO-8859-1") + ";");
         
      }else{
         
          res.setHeader("Content-Disposition", "filename=" + new String(file.getName().getBytes(), "KSC5601" ) + ";");
         
      }
     
  } else {
     
   res.setHeader("Content-Disposition", "attachment; filename=" + java.net.URLEncoder.encode(file.getName(), "UTF-8") + ";");
   
  }
  
  res.setContentLength((int)file.length());
       
        return true;
       
    }
   
}

 

 

사용법 :

<%@ page contentType="text/html; charset=euc-kr" import="java.io.*, java.net.*, com.javarush.util.*" %><%
        request.setCharacterEncoding("euc-kr");
        String fileName = request.getParameter("fileName");

        if(fileName != null){
                //fileName = URLDecoder.decode(fileName, "euc-kr");

                // get 으로 넘어오건.. POST 로 넘어오건.. .

                // DB 에서 파일이름을 읽어오건..

                // 한글로 된 파일 이름이 콘솔에 제대로 나와야

                // 다운로드가 제대로 됨

                System.out.println("fileName : " + fileName);

                File dir = new File(request.getContextPath() + "upload");
                File file = new File(dir, fileName);
                DownloadUtil downUtil = new DownloadUtil(file, request, response);

                downUtil.sendFile();
        }

%>