파일다운로드 jsp

Servlet&JSP

파일다운로드 jsp

우혁이 아빠 2011. 9. 29. 19:19

<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR" import="java.io.*"%>
<%    
    request.setCharacterEncoding("euc-kr");
    //String file_name = Utils.nullToStr(request.getParameter("file_name"));   // 파일이름
    //String file_location = Utils.nullToStr(request.getParameter("file_location"));   //저장된 파일 경로
	String file_name = "PERIODWINNERLIST_.xls";
    String file_location = "C:/temp/";
    
 	InputStream in = null;
 	OutputStream os = null;
 	File file  = null;
 	boolean skip = false;
 	String client = "";
 	String target = file_name;
 	String source = file_name;

if( target==null || source==null )
  		return;

try {
  		try {
   			file = new File(file_location, source);
   			in = new FileInputStream(file);
  		} catch( FileNotFoundException fe ) {
   			skip = true;
  		}

response.reset() ;
	  	client = request.getHeader("User-Agent");
	  	response.setContentType("application/x-msdownload;");
	  	response.setHeader("Content-Description", "JSP Generated Data");
		
	  	if( !skip ) {
	   		if(client.indexOf("MSIE 5.5") != -1) {
	    		response.setHeader("Content-Type", "doesn/matter; charset=euc-kr");
	    		response.setHeader("Content-Disposition", "filename=" +
	     		new String(target.getBytes("euc-kr"),"ISO8859_1"));
	   		} else {
	    		response.setHeader ("Content-Disposition", "attachment; filename=" +
	     		new String(target.getBytes("euc-kr"),"ISO8859_1"));
	   		}
	 
	   		response.setHeader ("Content-Length", ""+file.length() );
	   		out.clear();
	   		out = pageContext.pushBody();
	   		os = response.getOutputStream();
	   		byte b[] = new byte[(int)file.length()];
	   		int leng = 0;
	
			while( (leng = in.read(b)) > 0 ) {
	    		os.write(b,0,leng);
	   		}
	  	} else {
	   		response.setContentType("text/html;charset=euc-kr");
	   		out.println("<script language='javascript'>");
	   		out.println("alert('선택하신 파일을 찾을 수 없습니다');");
	   		out.println("history.back();");
	   		out.println("</script>");
	  	}
	  	in.close();
	  	os.close();
 	} catch( Exception e ) {
  		System.out.println(e);
 	}
%>

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