复杂 Json 到 Swift 可编码

Question

我在尝试将我的 JSON 响应“投射”到我的结构时遇到问题。

我的 JSON 回复：

{
    "data" =     {
        "answers" =         {
            "10" = "Not";
            "11" = "Not";
        };
        "company" = 1;
        "name" = "Name";
        "profile" =         {
            "email" = "email@email.com";
            "first_name" = "First name";
            "identity_document" = 12345678;
        };
    };
    "msg_code" = 0;
    "msg_text" = "Success";
}

我的结构：

struct LoginResponse: Codable {
    let answers: Dictionary<String, String>?
    let company: Int?
    let name: String?
    let profile: Profile?
    
    private enum CodingKeys: String, CodingKey{
        case answers = "answers"
        case company = "company"
        case name = "name"
        case profile = "profile"
    }
}

struct Profile: Codable{
    let email: String?
    let first_name: String?
    let identity_document: String?
    
    private enum CodingKeys: String, CodingKey{
        case email = "email"
        case first_name = "first_name"
        case identity_document = "identity_document"
    }
}

我要解码的代码：

Alamofire.request("myURL", method: .post, parameters: parameters, encoding: JSONEncoding.default, headers: nil).responseJSON{
                response in
                switch response.result
                {
                case .success(let json):
                    let login = try! JSONDecoder().decode(LoginResponse.self, from: json as! Data)
                    SVProgressHUD.dismiss()
                case .failure(let error):
                    self.showAlertOk(title:"Alert!", message: "Response Error", handlerOK: { action in print("error")})
                    SVProgressHUD.dismiss()
                }
            }

行：

let login = try! JSONDecoder().decode(LoginResponse.self, from: json as! Data)

修复上个版本的结果：

let login = try! JSONDecoder().decode(LoginResponse.self, from: json)

或

let login = try! JSONDecoder().decode(LoginResponse.self, from: json.data(using: .utf8)!)

logcat表示，

Could not cast value of type '__NSDictionaryI' (0x7fff87b9d5f0) to 'NSData' (0x7fff87b9c088).

有什么建议吗？我明白我必须改变！作为字典的数据，但我没有找到任何示例如何做。

Answer 1

两个致命问题：

根对象（键为 data、msg_code 和 msg_text 的字典）丢失
```
struct Root: Codable {
    let data : LoginResponse
}
```

你必须用responseData替换responseJSON才能得到原始数据，responseJSONreturns一个Swift数组或字典.

Alamofire.request("myURL", method: .post, parameters: parameters, encoding: JSONEncoding.default, headers: nil).responseData {

...

case .success(let data):
let login = try! JSONDecoder().decode(Root.self, from: data)

并且不要 try!、catch 错误并处理它。

复杂 Json 到 Swift 可编码

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jsondecoder