Swift 3.0和Alomofire 4发布请求返回date =“空请求”

Question

我是Swift 3.0的新手，下面是我试图制作的帖子

    let newParams: Parameters = ["p_data": ["sync": sync,"data": data,"cmd" : "getEventList"]]

    Alamofire.request(AppLocalSettings.baseURL, method: .post, parameters: newParams, encoding: JSONEncoding.default, headers: nil).validate().responseJSON { response in

        print(response.request as Any)
        print(response.response as Any)
        print(response.result.value as Any)

    }

我得到的状态代码是200，响应是：

Optional({
    data = "Empty Request";
    status = 0;
})

此帖子请求的网址为“http://sircleschoolps.myauschools.com.au/webservices_v4”。下面给出了postman的截图，它返回了一些有效的数据：