JSP下载服务器文件的方法

2020-07-27 21:29:46

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本文实例讲述了JSP下载服务器文件的方法。分享给大家供大家参考，具体如下：

<%@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.xxxx.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();    }  }%>

希望本文所述对大家JSP程序设计有所帮助。

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