<%@ page language="java" import="java.util.*,java.io.*"
pageEncoding="GBK"%>
<%
//下载普通文件，exe文件有时会报错
//设置响应编码格式
response.setCharacterEncoding("utf-8");
//获取文件路径，将路径编码转成iso-8859-1编码方式
String path=request.getParameter("path");
path=new String(path.getBytes("iso-8859-1"));
//建一个带有缓冲区域的输入输出对象
BufferedInputStream in = null;
BufferedOutputStream os = null;
try{
File file = new File(path);
in = new BufferedInputStream(new FileInputStream(file));
//制定文件默认名，这里对文件名做了处理，以免文件名出现乱码
//为下载界面中显示的默认文件名和文件大小
response.addHeader("Content-Disposition", "attachment;filename="
+ new String(file.getName().getBytes("gbk"),"iso-8859-1"));
response.addHeader("Content-Length", file.length() + "");
//让服务器告诉浏览器它发送的数据属于什么文件类型，最容易出错（对于.exe文件）,其他文件类型都能正常下载；
//在网络上传输文件，最好是要将.exe文件打包，再传最好！
response.setContentType("application/x-msdownload");
os = new BufferedOutputStream(response.getOutputStream());
byte[] buff = new byte[2048];
int bytesRead;
while(-1 != (bytesRead = in.read(buff, 0, buff.length))) {
os.write(buff,0,bytesRead);
}
}
catch(FileNotFoundException fe){
System.out.println("文件没找到");
}
catch(final IOException e) {
System.out.println ( "出现IOException." + e );
}
finally {
if (in != null)
in.close();
if (os != null)
os.close();
out.clear();
out = pageContext.pushBody();
}
%>
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