微信公众平台开发教程（四）_点击事件处理

在我们配置了微信公众号的基本配置之后

用户每次触发点击事件之后，腾讯都会回调到我们的这个URL，然后我们再处理对应逻辑，返回给腾讯。

下面以我暴露出来/wechat.do来进行举例：@RequestMapping(value="/wechat.do",method = RequestMethod.POST, produces = { "application/xml;charset=UTF-8" })

public @ResponseBody String processWxMessage(
            @RequestBody String requestBody,
            @RequestParam(value = "signature", required = false) String signature,
            @RequestParam(value = "timestamp", required = false) String timestamp,
            @RequestParam(value = "nonce", required = false) String nonce,
            @RequestParam(value = "encrypt_type", required = false) String encrypt_type,
            @RequestParam(value = "msg_signature", required = false) String msg_signature,
            HttpServletRequest request,HttpServletResponse response) throws Exception {
        String respMessage = null;
　　　　  //接收微信消息实体类
        ReceiveMessage message = new ReceiveMessage();
        Map config=null;
        try{
            if(StringUtils.isNotBlank(encrypt_type) && !"raw".equals(encrypt_type) && "aes".equals(encrypt_type)){
                logger.info("消息经过加密处理！");
　　　　　　　　　 //获取本地存储的公众号配置信息
                String sysytemAppid = (String) wxPropertiesBean.getProperties("system").get("system_appid");
                config = this.wxMpService.queryWxAccountByCode(sysytemAppid);
                String encodingaeskey = (String) config.get("encoding_aes_key");
                String token = (String) config.get("account_token");
                String appid = (String) config.get("account_appid");
　　　　　　　　　 //解密消息
                WXBizMsgCrypt msgCryPt = new WXBizMsgCrypt(token, encodingaeskey, appid);
                requestBody = msgCryPt.decryptMsg(msg_signature, timestamp, nonce, requestBody);
            }

            message = MessageUtil.parseXml(requestBody);
　　　　　　  //根据腾讯返回信息确认事件触发类型后进行处理，最后转换成xml格式的String返回给腾讯
            respMessage = this.wxService.analyzeMessage(message, config);
        }catch (Exception e){
            logger.error(e.getMessage());
            return null;
        }
        return respMessage;
    }