protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("application-msdown");
String fileName = "xyz.txt";
fileName = new String(fileName.getBytes("gbk"), "iso8859-1");
response.setHeader("content-disposition", "attachment;filename=" + fileName);
response.setCharacterEncoding("utf-8");
OutputStream out = response.getOutputStream();
String txtFileName = getServletContext().getRealPath(fileName);
InputStream in = new FileInputStream(txtFileName);
byte[] buffer = new byte[1024];
int len = 0;
while ((len = in.read()) > 0) {
out.write(buffer, 0, len);
}
out.flush();
in.close();
}