解析 Alamofire 结果 swift

Question

我无法解析来自 AF 请求的以下响应 – let json = result as! NSDictionary – 在 Swift:

{
    errors =     (
    );
    get = statistics;
    parameters =     {
        country = germany;
    };
    response =     (
                {
            cases =             {
                "1M_pop" = 14303;
                active = 317167;
                critical = 4179;
                new = "+15161";
                recovered = 863300;
                total = 1200006;
            };
            continent = Europe;
            country = Germany;
            day = "2020-12-08";
            deaths =             {
                "1M_pop" = 233;
                new = "+380";
                total = 19539;
            };
            population = 83900328;
            tests =             {
                "1M_pop" = 347331;
                total = 29141172;
            };
            time = "2020-12-08T09:15:08+00:00";
        }
    );
    results = 1;
}

知道如何获得实际病例数，例如 new 病例数吗？

到目前为止，我已经尝试了以下（错误抛出）方法：

if let responseDict = result as? NSDictionary {
                            if let data = responseDict.value(forKey: "response") as?
                                [NSDictionary] {
                                
                                // Get case numbers
                                guard let cases = data[0]["cases"] else { return }
                                guard let casesPerOneMil = cases[0] as! Int else { return }
                                print(casesPerOneMil)
                            }
                        }

Answer 1

基本上不要在 Swift 中使用 NS... 集合类型，使用原生类型。
并且不要使用value(forKey，使用密钥订阅。

并且您必须有条件地向下转换 Any 到预期的具体类型。

还有一个错误：cases 的对象是一个字典，注意 {} 并且你也必须通过密钥订阅来获取 casesPerOneMil 的值

if let responseDict = result as? [String:Any], 
   let dataArray = responseDict["response"] as? [[String:Any]],
   let firstDataItem = dataArray.first {
        
        // Get case numbers
        guard let cases = firstDataItem["cases"] as? [String:Any] else { return }
        guard let casesPerOneMil = cases["1M_pop"] as? Int else { return }
        print(casesPerOneMil)
    }
}

解析 Alamofire 结果 swift

Parse Alamofire result swift

nsdictionary

swift

alamofire

swifty-json