您需要使用URLSession任务来执行此操作，此后您需要JSONSerialization在本示例中使用我返回一个字典，[String:Any]您可以将其转换为所需的任何Model

使用此代码

func fetchData(completion: @escaping ([String:Any]?, Error?) -> Void) {
    let url = URL(string: "http://api.geekdo.com/api/images?ajax=1&gallery=all&nosession=1&objectid=127023&objecttype=thing&pageid=357&showcount=1&size=thumb&sort=recent")!

    let task = URLSession.shared.dataTask(with: url) { (data, response, error) in
        guard let data = data else { return }
        do {
            if let array = try JSONSerialization.jsonObject(with: data, options: .allowFragments) as? [String:Any]{
                completion(array, nil)
            }
        } catch {
            print(error)
            completion(nil, error)
        }
    }
    task.resume()
}

使用方法

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    fetchData { (dict, error) in
        debugPrint(dict)
    }
}

结果记录已打印

Optional(["config": {
    categories =     (
                {
            name = All;
            type = "";
        },
                {
            name = BoxFront;
            type = BoxFront;
        },
                {
            name = BoxBack;
            type = BoxBack;
        },
                {
            name = Components;
            type = Components;
        },
                {
            name = Customized;
            type = Customized;
        },
                {
            name = Play;
            type = Play;
        },
                {
            name = Miscellaneous;
            type = Miscellaneous;
        },
                {
            name = Mature;
            type = Mature;
        },
                {
            name = Uncategorized;
            type = uncat;
        }
    );
    datefilters =     (
                {
            name = "All Time";
            value = alltime;
        },
                {
            name = Today;
            value = today;
        },
                {
            name = "Two Days";
            value = twodays;
        },
                {
            name = "Last 7 Days";
            value = last7;
        },
                {
            name = "Last 30 Days";
            value = last30;
        },
                {
            name = "Last 365 Days";
            value = year;
        }
    );
    endpage = 402;
    filters =     (
                {
            listname = licensefilters;
            name = Licenses;
            type = licensefilter;
        },
                {
            listname = categories;
            name = Category;
            type = tag;
        },
                {
            listname = galleries;
            name = Gallery;
            type = gallery;
        }
    );
    galleries =     (
                {
            name = All;
            type = all;
        },
                {
            name = Game;
            type = game;
        },
                {
            name = People;
            type = people;
        },
                {
            name = Creative;
            type = creative;
        }
    );
    licensefilters =     (
                {
            name = Any;
            type = "";
        },
                {
            name = "Copying allowed";
            type = reuse;
        },
                {
            name = "Commercial use allowed";
            type = commercial;
        },
                {
            name = "Modification allowed";
            type = modify;
        }
    );
    numitems = 402;
    sorttypes =     (
                {
            name = Hot;
            type = hot;
        },
                {
            name = Recent;
            type = recent;
        }
    ); }, "images": <__NSSingleObjectArrayI 0x600000010710>( {
    caption = "White power tiles";
    imageid = 1567153;
    imageurl = "https://cf.geekdo-images.com/6fCr14v025ZKYhXRMnbhYR16Ta8=/fit-in/200x150/pic1567153.jpg";
    "imageurl_lg" = "https://cf.geekdo-images.com/images/pic1567153_lg.jpg";
    name = "<null>";
    numcomments = 0;
    numrecommend = 6;
    user =     {
        avatar = 1;
        avatarfile = "avatar_id33829.jpg";
        username = manosdowns;
    }; } ) ])

更新了修复“应用程序传输安全性已阻止明文”的错误

调整您的info.plist