excel模板下载(可适用于各种格式文件下载)
<%@page import="java.io.FileInputStream"%>
<%@page import="java.io.File"%>
<%@page language="java" contentType="application/x-msdownload" pageEncoding="utf-8"%>
<%
//关于文件下载时采用文件流输出的方式处理:
//加上response.reset(),并且所有的%>后面不要换行,包括最后一个;
response.reset();//可以加也可以不加
response.setContentType("application/x-download");
String filedownload = "D:\\MyExcel.xls";
File inFile = new File(application.getRealPath("/")+"temp\\"+"MyExcel.xls");
File inFile1 = new File(this.getClass().getResource("/").getPath());
String aa=this.getClass().getResource("").getPath()+"1.jsp";
String filedisplay = "MyExcel.xls";
// String filedisplay1 = URLEncoder.encode(filedisplay,"UTF-8");
response.addHeader("Content-Disposition","attachment;filename=" + filedisplay);
java.io.OutputStream outp = null;
java.io.FileInputStream in = null;
try
{
outp = response.getOutputStream();
in = new FileInputStream(inFile);
byte[] b = new byte[1024];
int i = 0;
while((i = in.read(b)) > 0)
{
outp.write(b, 0, i);
}
//
outp.flush();
//要加以下两句话,否则会报错
//java.lang.IllegalStateException: getOutputStream() has already been called for //this response
out.clear();
out = pageContext.pushBody();
}
catch(Exception e)
{
System.out.println("Error!");
e.printStackTrace();
}
finally
{
if(in != null)
{
in.close();
in = null;
}
//这里不能关闭
//if(outp != null)
//{
//outp.close();
//outp = null;
//}
}
%>
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