ios - Swift 3.0 中的 POST 请求

Question

我正在尝试使用 Swift 中的发布请求从 Web 服务获取响应。但是我收到“无法读取数据，因为它的格式不正确”的错误。以下是代码:

let dict = ["UserName": "2222211111",
                        "Password": "123456",
                        "AppName": "xyz"]
                as [String: Any]

            //create the session object
            let session = URLSession.shared
            let url = "someurl.svc/somefunction"

            //now create the URLRequest object using the url object
            var request = URLRequest(url: url)
            request.httpMethod = "POST" //set http method as POST

            do {
                request.httpBody = try JSONSerialization.data(withJSONObject: dict, options: .prettyPrinted)

            } catch let error {
                print(error.localizedDescription)
            }

            request.addValue("application/json", forHTTPHeaderField: "Content-Type")
            request.addValue("application/json", forHTTPHeaderField: "Accept")

            //create dataTask using the session object to send data to the server
            let task = session.dataTask(with: request as URLRequest, completionHandler: { data, response, error in

                guard error == nil else {
                    return
                }

                guard let data = data else {
                    return
                }

                do {
                    //create json object from data
                    if let json = try JSONSerialization.jsonObject(with: data, options: .mutableContainers) as? [String: Any] {
                        print(json)
                    }

                } catch let error {
                    print(error.localizedDescription)
                }
            })
            task.resume()

我什至使用过第三方库，如 Alamofire、Networking 等。从这些库中，我得到代码 3840，字符 3 周围的响应无效。但是我使用 Objective-C 代码或使用 Postman 软件得到了正确的响应。有人可以帮我解决这个问题吗？谢谢

Answer 1

以下是使用参数调用 Alamofire POST api 的示例；内容类型和接受 header ，试试这个。

func performPOSTLogin() -> Void {
        var parameters = [String:String]()
        parameters["email"] = "p@p.com"
        parameters["password"] = "abcd1234"

        let headers: HTTPHeaders = ["Authorization": "sxfsdfsdfsfsfsf", "Accept": "application/json", "Content-Type" :"application/json"]

        Alamofire.request("http://domainname/folder/folder/folder/apiname/", method: .post, parameters: parameters, encoding: JSONEncoding.default, headers: headers).responseJSON { response in

            // original URL request
            print("Request is :",response.request!)

            // HTTP URL response --> header and status code
            print("Response received is :",response.response!)

            // server data : example 267 bytes
            print("Response data is :",response.data!)

            // result of response serialization : SUCCESS / FAILURE
            print("Response result is :",response.result)

            debugPrint("Debug Print :", response)
        }
    }