SpringMVC 用http请求的Get和Post请求作为路由的方法的重载方式

@Controller
@RequestMapping("/messageProcessing")
public class WechatPushController {

    @Autowired
    private WechatPushService wechatPushService;

    @Autowired
    private WechatOAuthService wechatOAuthService;

    @Autowired
    private WechatUserService wechatUserService;

    /**
     * 确认请求来自微信服务器
     */
    @RequestMapping(value="/doGet",method=RequestMethod.GET)
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 微信加密签名
        String signature = request.getParameter("signature");
        // 时间戳
        String timestamp = request.getParameter("timestamp");
        // 随机数
        String nonce = request.getParameter("nonce");
        // 随机字符串
        String echostr = request.getParameter("echostr");  

        PrintWriter out = response.getWriter();
        // 通过检验signature对请求进行校验，若校验成功则原样返回echostr，表示接入成功，否则接入失败
        if (WechatSignUtil.checkSignature(signature, timestamp, nonce)) {
            out.print(echostr);
        }
        out.close();
        out = null;
    }

    /**
     * 处理微信服务器发来的消息
     */
    @RequestMapping(value="/doGet",method=RequestMethod.POST)
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 将请求、响应的编码均设置为UTF-8（防止中文乱码）
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");

        // 调用核心业务类接收消息、处理消息
        String respMessage = wechatPushService.processRequest(request);

        // 响应消息
        PrintWriter out = response.getWriter();
        out.print(respMessage);
        out.close();
    }