class ChannelUserIdNotifyController extends CommonCtrl {

    @ApiOperation("（转账）获取用户ID - 回调函数")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "extParam", value = "扩展参数"),
            @ApiImplicitParam(name = "channelUserId", value = "用户userId"),
            @ApiImplicitParam(name = "appId", value = "应用ID")
    })
    @RequestMapping("")
    public String channelUserIdCallback() {<FILL_FUNCTION_BODY>}
}


        try {
            //请求参数
            JSONObject params = getReqParamJSON();

            String extParam = params.getString("extParam");
            String channelUserId = params.getString("channelUserId");
            String appId = params.getString("appId");

            //推送到前端
            WsChannelUserIdServer.sendMsgByAppAndCid(appId, extParam, channelUserId);

        } catch (Exception e) {
            request.setAttribute("errMsg", e.getMessage());
        }

        return "channelUser/getChannelUserIdPage";
    
<methods>public non-sealed void <init>() <variables>protected com.jeequan.jeepay.mch.config.SystemYmlConfig mainConfig,private com.jeequan.jeepay.service.impl.SysConfigService sysConfigService