swift4 保存用户模型到本地

1.请求得到json

{
  "errorno" : 0,
  "data" : {
    "avatar" : "",
    "alipay" : null,
    "credit_card" : null,
    "id" : 100070,
    "nickname" : "起来了",
    "account" : "0.00",
    "finished" : 0,
    "username" : "",
    "email" : "",
    "tel" : "17386014224",
    "usersig" : ""
  },
  "message" : "success"
}

//网络请求
 let para = ["tel":"17386014224","password":"111111"] as [String : AnyObject]
        
        NetworkTool.postMesa(url: API_LOGIN_URL, parameters: para ) { (value) in

             //swiftyJSON 解析
            let json = JSON(value ?? "123")
            //取出data
            let dataDict   = json["data"].dictionaryValue 
  
     
            //字典转模型
            let user : User = User.init(dict: (dataDict as [String : JSON] ))
            print(user.tel!)

         //归档之后才能保存（模型要encode） 完成！
            let data = NSKeyedArchiver.archivedData(withRootObject: user) as NSData
            UserDefaults.standard.set(data, forKey: "user")
      

           //解档 完成！
            let dataa =     UserDefaults.standard.object(forKey: "user") as! NSData

            let userrrr : User = NSKeyedUnarchiver.unarchiveObject(with: dataa as Data  )  as! User
  
            print( userrrr)
            
            print(userrrr.tel!)




        }
        
        
    

//
//  User.swift
//  task
//
//  Created by 柏超曾 on 2017/9/28.
//  Copyright © 2017年 柏超曾. All rights reserved.
//

import SwiftyJSON
import Foundation
class User : NSObject, NSCoding {
   
    
    var  avatar : String?
    var  alipay : String?
    var  credit_card : String?
    var  id : String?
    var  nickname : String?
    var  account : String?
    var  finished : String?
    var  username : String?
    var  email : String?
    var  tel : String?
    var  usersig : String?
    
    
    // MARK:- 自定义构造函数  KVC实现字典转模型
    init(dict : [String : JSON]) {
        super.init()

        let rrrr  :String = (dict["tel"]?.stringValue)!
        print(rrrr)
        


         tel =  dict["tel"]?.stringValue as String!


        print(tel!)
    }
    
    
    override func setValue(_ value: Any?, forUndefinedKey key: String) {}
    
    
    struct PropertyKey {
        static let id = "id"
        static let nickname = "nickname"
        static let username = "username"
        static let tel = "tel"
       
    }
    


    required init?(coder aDecoder: NSCoder) {
        id = aDecoder.decodeObject(forKey: PropertyKey.id) as? String
        nickname = aDecoder.decodeObject(forKey: PropertyKey.nickname) as? String
        tel = aDecoder.decodeObject(forKey: PropertyKey.tel) as? String

    }



    func encode(with aCoder: NSCoder) {
        aCoder.encode(id, forKey: PropertyKey.id)
        aCoder.encode(nickname, forKey: PropertyKey.nickname)
        aCoder.encode(tel, forKey: PropertyKey.tel)



    }


    
}