Question

我很沮丧，因为我想将JSON映射到Swift对象，我尝试了5个库，每次f ****** Swift都给我零。

因此，让我们通过提供以下方式让Instagram API提出简单的请求来获取用户数据：

user-id：237965875
client_id：b806368aaf384a7baec491f8fab610a6

我正在使用：

Podfile

平台：ios，'9.0'use_frameworks！

目标'secondTest'做pod'AlamofireObjectMapper'，'〜＆gt; 1.0'结束

和

XCODE 7
Swift 2.0
AlamofireObjectMapper v1.0

我知道我需要创建swift文件（类）并定义应该处理响应的对象：

答案是:(从apigee.com获得）

HTTP/1.1 200 OK
Content-Language:
en
X-Ratelimit-Limit:
5000
Vary:
Cookie, Accept-Language, Accept-Encoding
Date:
Sun, 27 Sep 2015 18:46:45 GMT
Content-Length:
383
Expires:
Sat, 01 Jan 2000 00:00:00 GMT
X-Ratelimit-Remaining:
4987
Set-Cookie:
csrftoken=41681b429002fa50331def50b07b2a78; expires=Sun, 25-Sep-2016 18:46:45 GMT; Max-Age=31449600; Path=/
Connection:
keep-alive
Content-Type:
application/json; charset=utf-8
Server:
Apigee Router
Cache-Control:
private, no-cache, no-store, must-revalidate
Pragma:
no-cache

    {
      "meta":  
      {
        "code": 200
      },
      "data":  
      {
        "username": "jessica_brti",
        "bio": "I write and make silly faces for a living.",
        "website": "http://www.wattpad.com/JessicaBrti",
        "profile_picture": "https://igcdn-photos-f-a.akamaihd.net/hphotos-ak-xfa1/t51.2885-19/11311247_1206483099369077_1549111893_a.jpg",
        "full_name": "Jessy",
        "counts":
        {
          "media": 50,
          "followed_by": 55153,
          "follows": 46
        },
        "id": "237965875"
      }
    }

然后定义处理此响应的对象的swift类文件是：

import Foundation
import ObjectMapper

    class instaResponse: Mappable
    {
        var metas: [meta]?
        var datas: [data]?

        required init?(_ map: Map){}

        func mapping(map: Map) {
            metas <- map["meta"]
            datas <- map["data"]
        }
    }

    class meta: Mappable
    {
        var code: String?

        required init?(_ map: Map){}

        func mapping(map: Map)
        {
            code <- map["code"]
        }
    }

    class data: Mappable {
        var username: String?
        var bio: String?
        var website: String?
        var profile_picture: String?
        var full_name: String?
        var countss: [counts]?
        var id: String?

        required init?(_ map: Map){}

        func mapping(map: Map)
        {
            username <- map["username"]
            bio <- map["bio"]
            website <- map["website"]
            profile_picture <- map["profile_picture"]
            full_name <- map["full_name"]
            countss <- map["counts"]
            id  <- map["id"]
        }
    }

    class counts: Mappable {
        var media: Int?
        var followed_by: Int?
        var follows: Int?

        required init?(_ map: Map){}

        func mapping(map: Map)
        {
            media <- map["media"]
            followed_by <- map["followed_by"]
            follows <- map["follows"]
        }
    }

最后，这是我发出请求并将JSON解析为对象的文件

import UIKit
import Alamofire
import AlamofireObjectMapper
import ObjectMapper

    class ViewController: UIViewController {

        override func viewDidLoad() {

            let userID =
            [
                "user-id":"237965875",
                "client_id":"b806368aaf384a7baec491f8fab610a6"
            ]

            let URL = "https://api.instagram.com/v1/users/237965875"

            Alamofire.request(.GET, URL, parameters: userID)
                .validate()
                .responseObject
                {
                    (result: instaResponse?, error: ErrorType?) in

                    print(error.debugDescription)

                    if let data = result?.datas
                    {
                        for i in data
                        {
                            print(i.username)
                        }
                    }
                }.responseJSON{(_,_,result) in

                    print(result.value)
            }

            super.viewDidLoad()
            // Do any additional setup after loading the view, typically from a nib.
        }

        override func didReceiveMemoryWarning() {
            super.didReceiveMemoryWarning()
            // Dispose of any resources that can be recreated.
        }

    }

最后，我正在使用打印的用户名

“print（i.username）”

只有一个人

零

和第二次印刷

“打印（result.value）”

正在给予闪亮的光芒：

Optional({
data =     {
    bio = "I write and make silly faces for a living.";
    counts =         {
        "followed_by" = 55153;
        follows = 46;
        media = 50;
    };
    "full_name" = Jessy;
    id = 237965875;
    "profile_picture" = "https://scontent.cdninstagram.com/hphotos-xfa1/t51.2885-19/11311247_1206483099369077_1549111893_a.jpg";
    username = "jessica_brti";
    website = "http://www.wattpad.com/JessicaBrti";
};
meta =     {
    code = 200;
};
})

但我不知道如何使这个物体与Alamofire一致。

所以，伙计们，请帮助我解决这个难题。

提前致谢!!!

Answer 1

您的问题是JSON中的meta和data元素只是对象，它们不是对象数组。因为您的映射将这些键映射到数组，所以无法对它们进行反序列化。

您的地图类应该是

import Foundation
import ObjectMapper

    class instaResponse: Mappable
    {
        var metas: meta?
        var datas: data?

        required init?(_ map: Map){}

        func mapping(map: Map) {
            metas <- map["meta"]
            datas <- map["data"]
        }
    }

...

然后你不需要for循环来访问数据 -

print(error.debugDescription)

if let data = result?.datas {
    print(data.username)
}

AlamofireObjectMapper获取nil时应该给我值

1 个答案: