JSP如何下载服务器文件？
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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