Question

我有一个模型课

class User{
var name:String
var number:Int
}

我将其详细信息下载为文本文件，格式为

firstname:John
rollnumber:234

5

我该如何为此定制装饰器。

NB：键“ firstname”“ rollnumber”是动态的，是从后端获取的。

Answer 1

这样解析，将响应作为Dict传递给init方法

class User{
var name:String?
var number:Int?
   init(With dict:[String:Any]){
     if let value = dict["firstname"] as? String{
       name = value
     }
     if let value = dict["rollnumber"] as? Int{
       number = value
     }
  }

}

Answer 2

会是这样的：

struct User: Decodable {

    let name: String
    let number: Int

    init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: UserKeys.self)
        name = try container.decode(String.self, forKey: .name)
        number = try container.decode(Int.self, forKey: .number)
    }

    private enum UserKeys: String, CodingKey {
        case name = "firstname"
        case number = "rollnumber"
    }


    static getUser(jsonData: Data) -> User? {
        do {
            let user = try JSONDecoder().decode(User.self, from:jsonData)
            return user
        } catch {
            return nil
        }
   }

}

并获取用户：

User.getUser(jsonData: data)

从文本文件解码SWIFT模型类

2 个答案: