json - iOS/Swift/JSON : Parse nested JSON with swiftyJSON

Question

我在解析以下嵌套 JSON 时遇到问题。我可以获得第一个级别，但不能获得后续级别。谁能建议正确的语法来获得“愤怒”？预先感谢您的任何建议。

JSON:

{
    "document_tone" =     {
        "tone_categories" =         (
                        {
                "category_id" = "emotion_tone";
                "category_name" = "Emotion Tone";
                tones =                 (
                                        {
                        score = "0.218727";
                        "tone_id" = anger;
                        "tone_name" = Anger;
                    },  
                );
            },
    );
} 

代码:

if let result = response.result.value as? [String:Any] {
    if let tone = result["document_tone"] as? [String:Any] {
        print(tone) //This prints ok
        if let cat = tone["tone_categories"] as?  String {
            print("here is%@",cat)//prints as null
        }
    }
}

Answer 1

要在tone_name打印愤怒

    if let result = response.result.value as? [String:Any] {
        if let tone = result["document_tone"] as? [String:Any] {

            if let cat = tone["tone_categories"] as?  [[string:Any]]{
                if let dic = cat[0] as?  [string:Any]{

                    if let tones = dic ["tones"] as?  [[String:Any]] {

                        if let toneDic = tones[0] as?  [string:Any]{
                            print(toneDic["tone_name"])   //print Anger
                        }
                    }
                }
            }
        }
    }