@RequestMapping(value = "checkSignature", method = RequestMethod.POST) 
	@ResponseBody
    public void checkSignaturePost() {
	     //将请求、响应的编码均设置为UTF-8（防止中文乱码）  
	     try {
			request.setCharacterEncoding("UTF-8");
			response.setCharacterEncoding("UTF-8");
	     } catch (UnsupportedEncodingException e) {
			e.printStackTrace();
	     }  
	     // 调用核心业务类接收消息、处理消息  
	     String respMessage = MessageService.processRequest(request); 
	     //respMessage
	     
		 // 响应消息
		 PrintWriter out;
		 try {
			out = response.getWriter();
			out.print(respMessage);  
			out.close(); 
		 } catch (IOException e) {
			e.printStackTrace();
		 }
    }