IOS/Swift/JSON：使用 swiftyJSON 解析嵌套的 JSON

Posted 2023-03-15

【中文标题】IOS/Swift/JSON：使用 swiftyJSON 解析嵌套的 JSON

【英文标题】：IOS/Swift/JSON: Parse nested JSON with swiftyJSON

【发布时间】：2018-06-01 22:54:07

【问题描述】：

我在解析以下嵌套 JSON 时遇到问题。我可以获得第一级，但不能获得后续级别。任何人都可以建议正确的语法来获得“愤怒”吗？提前感谢您的任何建议。

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
        
    

【问题讨论】：

显然“tone_categories”是字典数组，而不是字符串。

【参考方案1】：

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
                        
                    
                
            
        
    

【参考方案2】：

你可以试试

if let result = response.result.value as? [String:Any] 
   if let tone = result["document_tone"] as? [String:Any] 
       print(tone)  
      if let cat = tone["tone_categories"] as? [[String:Any]] 
            if let dic = cat[0] as? [String:Any] 
                if let catId = dic["category_id"] as? String 
                  print("catId is %@",catId) 
                
                if let catName = dic["category_name"] as? String 
                  print("catName is %@",catName ) 
                
                if let alltones = dic["tones"] as? [[String:Any]] 
                   print("alltones is %@",alltones) 
                    if let innerTone = alltones[0] as? [String:Any] 
                       print(innerTone["tone_name"])
                       print(innerTone["tone_id"])