@RequestMapping(value = "member/getSignature", method = {RequestMethod.POST, RequestMethod.GET})
@NoRepeatSubmit
@ApiOperation(value = "消息回调")
@NoRepeatWebLog
public String getSignature(HttpServletRequest request, HttpServletResponse response) throws Exception {
    //微信加密签名，signature结合了开发者填写的token参数和请求中的timestamp参数、nonce参数
    boolean isGet = request.getMethod().toLowerCase().equals("get");
    if (isGet) {
        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");
        log.info("echostr>>>>>>>>>>" + echostr);
        //通过检验signature对请求进行校验，若校验成功则原样返回echostr，否则接入失败
        if (WechatUtil.checkSignature(signature, timestamp, nonce)) {
            log.info("echostr>>>>>>>>>>>>" + echostr);
            System.out.println(echostr);
            return echostr;
        }
        log.info("客服消息验证url验证结果:{}", echostr);
    } else {
        WechatUtil.response(request, response);
    }
    return null;
}



echostr>>>>>>>>>>5347601719758867709

客服消息验证url验证结果:5347601719758867709