php - 来自swift的JSON请求在php中显示空数组

Question

我正在尝试从我的 swift 应用程序向 PHP 服务器发出请求。出于某种原因，php 将一个空数组显示为 $_REQUEST 变量。我已经查看了堆栈溢出并实现了我能找到的所有可能有帮助的东西，但仍然在 php 中得到一个空数组。这是相关的快速代码...

func connect(_ pin: String, completion: @escaping(Result<ConnectResponse?, Error>) -> ()) {
  let params: [String : Any] = [
    "mobile_pin_connect": pin,
    "device_info": UIDevice().model,
    "additional_info": UIDevice().systemVersion
  ]
  doRequest(params: params) { (data) in
    if let data = data {
      do {
        let res = try JSONDecoder().decode(Dictionary<String, String>.self, from: data)
        completion(.success(
          ConnectResponse(success: (res["success"] == "true"), connect_id: res["connect_id"] ?? nil, error: res["error"] ?? nil)))
      } catch {
        completion(.failure(error))
      }
    } else {
      print("in else block")
    }
  }
}

fileprivate func doRequest(params: [String: Any], completion: @escaping (Data?) -> ()) {
        let body = createJsonBody(params)!
        self.request.httpBody = body
        print("Sending request with thw following variables")
        print(String(data: body, encoding: .utf8)!)
        print(String(data: self.request.httpBody!, encoding: .utf8))
        URLSession.shared.dataTask(with: self.request) { (data, response, error) in
            if let error = error {
                print("Error in request: \(error)")
                completion(nil)
            }
            let stringResult = String(data: data!, encoding: .utf8)!
            let properResult = String(stringResult.map {
                $0 == "." ? "=" : $0
            })
            let decodedData = Data(base64Encoded: properResult)
            completion(decodedData)
        }.resume()
    }

fileprivate func createJsonBody(_ params: [String: Any]) -> Data? {
        do {
            let jsonData = try JSONSerialization.data(withJSONObject: params)
            let body = Data(jsonData).base64EncodedData()
            return body
        } catch {
            print("Unable to create json body: " + error.localizedDescription, error)
            return nil
        }
    }

将请求发送到服务器，请求的设置在静态 var 设置中...

private static var sharedConnector: ApiConnector = {
        let url = URL(string: "https://mywebsiteURLhere.com/api/mobile/challenge")
        var request = URLRequest(url: url!)
        request.httpMethod = "POST"
        request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")
        let connector = ApiConnector(request)
        return connector
    }()

所以我为 application/json 设置了正确的 header 值，我将请求方法设置为 post，我对 json 数据进行 base64encoding，在 PHP 中我设置了获取 php://input...

$rawRequest = file_get_contents("php://input");

并将 $_REQUEST 变量转储到错误日志，但我总是得到数组\n(\n)\n
它只是显示一个空数组
我什至做了

error_log("Raw request from index.php");
error_log(print_r($rawRequest, true));

它记录了一个完全空的行。
我无法弄清楚为什么 PHP 在请求中什么都没有，从我在网上看到的所有内容来看，我都在 swift 中正确地执行了请求。任何帮助都非常感谢。谢谢

Answer 1

根据您的 Swift 代码，您能否替换以下方法。

fileprivate func createJsonBody(_ params: [String: Any]) -> Data? {
        do {

            let jsonData = try JSONSerialization.data(withJSONObject: params)
            let body = Data(jsonData)
            return body
        } catch {
            print("Unable to create json body: " + error.localizedDescription, error)
            return nil
        }
    }

您需要替换此行 let body = Data(jsonData)和 let body = Data(jsonData).base64EncodedData()