我能够在 Alamofire 中使用 Oauth 获取数据以成功登录，但如何在另一个 viewController 中获取 JSON 数据。

    func loginAccess(){

        let headers = [
            "Content-Type": "application/x-www-form-urlencoded"
        ]
        let parameters = [

            "UserName": username_textfield.text! as String,
            "Password": password_textfield.text! as String,
            "grant_type": "password",
                    ]


//        let url = NSURL(string: "http://192.168.100.5:84/Token")!
        Alamofire.request("http://192.168.100.5:84/Token", method: .post, parameters: parameters, encoding:  URLEncoding.httpBody, headers: headers).responseJSON { (response:DataResponse<Any>) in

            switch(response.result) {

            case .success(_):
                if response.result.value != nil{

                    let statusCode = (response.response?.statusCode)!
                    print("...HTTP code: \(statusCode)")

                    if let JSON = response.result.value {

                        print("JSON: \(JSON)")
//                        }

                    }
                    if statusCode == 200{
                        self.view.makeToast(message: "Welcome !!")
                        self.performSegue(withIdentifier: "mainview", sender: self)

                    }else{
                    self.view.makeToast(message: "Username or password invalid")
                    }
                }

                break

            case .failure(_):

                print(response.result.error!)
                break

            }
        }
    }

模态类

class Login{

    var access_token = String()
    var token_type = String()
    var expire_in = String()
    var username = String()
    var masterid = String()
    var name = String()
    var access = String()
    var issued = String()
    var expries = String()

    init(loginJson:JSON){
    self.access_token = loginJson["access_token"].stringValue
        self.token_type = loginJson["token_type"].stringValue
        self.expire_in = loginJson["expires_in"].stringValue
        self.username = loginJson["userName"].stringValue
        self.masterid = loginJson["MasterID"].stringValue
        self.name = loginJson["Name"].stringValue
        self.access = loginJson["Access"].stringValue
        self.issued = loginJson[".issued"].stringValue
        self.expries = loginJson[".expires"].stringValue
    }


}

这是否能够在另一个 ViewController 中访问 JSON 数据，或者我们需要另一个函数？如果这在相同的功能中是可能的那么如何 能解决吗？

最佳答案

用您的代码替换

func getlogin(){
       let headers = [
           "Content-Type": "application/x-www-form-urlencoded"
       ]
       let parameters = [

           "UserName": username_textfield.text! as String,
           "Password": password_textfield.text! as String,
           "grant_type": "password",
           ]


       //        let url = NSURL(string: "http://192.168.100.5:84/Token")!
       Alamofire.request("http://192.168.100.5:84/Token", method: .post, parameters: parameters, encoding:  URLEncoding.httpBody, headers: headers).responseJSON { (response:DataResponse<Any>) in

           switch(response.result) {
           case.success(let data):
               print("success",data)
                let statusCode = (response.response?.statusCode)!
               if statusCode == 200{
                   self.view.makeToast(message: "Welcome !!")
//                    self.performSegue(withIdentifier: "mainview", sender: self)

               }else{
                   self.view.makeToast(message: "Username or password invalid")
               }
               self.myResponse = JSON(data)
               let login = Login(loginJson: self.myResponse)
               DispatchQueue.main.async(execute: { () -> Void in
                   self.performSegue(withIdentifier: "pass_data", sender: login)                    
                                  })

           case.failure(let error):
               print("Not Success",error)
           }

       }
   }

你也可以添加这个

  override func prepare(for segue: UIStoryboardSegue, sender: Any?) {

       if segue.identifier == "pass_data" {

           if let eventsVC = segue.destination as? secondViewController,

               let loginData = sender as? Login {

               eventsVC.login_details = loginData

           }

       }

   }

in your second view controller you shuold add variable like this var login_details : Login? to get JSON data

关于ios - 如何从登录中获取JSON数据？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44756199/