JSP下载服务器文件

<%@page import="java.io.FileInputStream"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%@page language="java" contentType="text/html; charset=UTF-8"%>
<%@page import="com.ecc.emp.core.Context" %>
<%@page import="java.io.File" %>
<%@ include file="http://www.cnblogs.com/head.jsp"%>

<%
    boolean loadFlag = false;
    ServletOutputStream ou = null;
    FileInputStream fis = null;
    try{    
        Context context=(Context)request.getAttribute("context");
        String accountFilePath = (String)context.getDataValue("accountFilePath");
        //String accountFilePath ="E:/ComeBack/Acc_BOS_CM/WebContent/upload/product/1336873410414custormerStatement.txt";
        //String accountFileName = (String)context.getDataValue("accountFileName");
        String displayFileName = (String)context.getDataValue("displayFileName");
        //String displayFileName ="custormerStatement.txt";
        String fullPath =accountFilePath;
        response.reset();
           response.setContentType("charset=UTF-8");
        response.setContentType("text/HTML");
        //response.setContentType("application/vnd.ms-excel");        
        String filename =  new String(displayFileName.getBytes("gb2312"), "ISO8859-1");
        response.setHeader("Content-Disposition","attachment; filename=" + filename);
        //解决HTTPS不能下载的问题
        response.setHeader("Cache-Control","public");        
        ou =  response.getOutputStream();
        File file = new File(fullPath);
        fis = new FileInputStream(file);        
        try {
            if (fis != null) {
                int filelen = fis.available();
                byte a[] = new byte[filelen];
                fis.read(a);
                ou.write(a);
                ou.flush();
            }            
            loadFlag=true;
        } catch (Exception e) {
            System.out.println("Excel is not exist!");
        }
        out = pageContext.pushBody();
    }catch(Exception e){
        e.printStackTrace();
    }finally{
        try {
            fis.close();
            ou.close();
            ou = null;
            response.flushBuffer();
        } catch (Exception e) {
            // TODO 自动生成 catch 块
            e.printStackTrace();
        }
    }
        
%>
posted @ 2012-06-27 10:49  BIGBIGBIG  阅读(2008)  评论(0编辑  收藏  举报