java 导出 txt 弹出框

HttpServletResponse response =ServletActionContext.getResponse();
		
response.setContentType("application/txt");
response.setHeader("Content-disposition", "attachment;filename="+文件名+".txt");

BufferedOutputStream out = null;

try {
  out = new BufferedOutputStream(response.getOutputStream());
  out.write(strSCGZZ.getBytes());
} catch (IOException e) {
  throw e;
} finally {
   if (out != null){
     out.close();
   }
}