公共的文件上载页面实现
在web系统中我们通常需要下载文件，我们可以通过页面跳转相应的download.jsp页面来实现，只需要在action中或者url中添加获取文件名称的参数即可。实现如下
jsp文件实现：download.jsp
<%@page language="java" contentType="application/x-msdownload" pageEncoding="gb2312"%>
<%@page import ="java.io.*,java.net.*"%>
<%
try{
String fileName = (String)request.getParameter("fileName");
String filePath = application.getRealPath("/report/" + fileName);
response.setContentType("application/x-download");
String fn = fileName.substring(fileName.lastIndexOf("/")+1, fileName.length());
fn = URLEncoder.encode(fn,"UTF-8");
response.addHeader("Content-Disposition","attachment;filename=" + fn);
OutputStream outputStream = response.getOutputStream();
InputStream inputStream = new FileInputStream(filePath);
byte[] buffer = new byte[1024];
int i = -1;
while ((i = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, i);
}
outputStream.flush();
outputStream.close();
inputStream.close();
outputStream = null;
}catch(Exception e)
{
}
%>