NSJSONSerialization.JSONObjectWithData更改返回结果的内容？

Question

func retrieveData(englishWord : String, completionHandler : (success: Bool, data : [String : AnyObject]?, errorString : String?) -> Void) { 
     let baseURL = "https://api.pearson.com/v2/dictionaries/ldoce5/entries?headword=vodka" 
     let urlString = baseURL 
     print(urlString) 
     let url = NSURL(string: urlString) 
     let request = NSMutableURLRequest(URL: url!) 
     let session = NSURLSession.sharedSession() 
     let task = session.dataTaskWithRequest(request) { data, response, error in 
      if error != nil { 
       completionHandler(success: false, data: nil, errorString: "There was a networking error") 
       return 
      } 
      if data == nil { 
       completionHandler(success: false, data: nil, errorString: "There was an error in the request for data") 
       return 
      } 

      let parsedResult : AnyObject? 
      do { 
       parsedResult = try NSJSONSerialization.JSONObjectWithData(data!, options: .AllowFragments) as! [String : AnyObject] 
       print(parsedResult!) 

      } catch { 
       completionHandler(success: false, data: nil, errorString: "There was an error in the conversion for data") 
       return 
      } 

     } 
     task.resume() 
    } 

所以现在print(parsedResult!)给出：

{ 数= 1; limit = 10; offset = 0; 结果=（ { 数据集=（ ldoce5， 字典 ）; 词条=伏特加酒; ID = cqAG3cXCxZ; “part_of_speech”=名词; 发音=（ { 音频=（ { LANG = “英英”; 类型=发音; URL = “/v2/dictionaries/assets/ldoce/gb_pron/vodka0205.mp3”; } ）; IPA = “\ U02c8v \ U0252dk \ U0259”; }， { audio =（ lang =“American English”; type =发音; url =“/v2/dictionaries/assets/ldoce/us_pron/vodka.mp3”; } ）; ipa =“\ U02c8v \ U0251 \ U02d0dk \ U0259”; lang =“美国英语”; } ）; 感官=（​​ { 定义=（ “一强明确酒精饮料最初从俄罗斯，或这种玻璃” ）; } ）; url =“/ v2/dictionaries/entries/cqAG3cXCxZ”; } ）; status = 200; total = 1; url =“/ v2/dictionaries/ldoce5/entries？headword = vodka”; }

但查询网址：Here

我张贴在这里为方便起见：

{ “地位”：200， “偏移”：0， “限制”：10， “计数”：1， “总”：1， “URL”： “/ V2 /字典/ ldoce5 /条目词条=伏特加”， “结果”：[{ “数据集”：[ “ldoce5”， “字典”] ，“headword”：“vodka”，“id”：“cqAG3cXCxZ”，“part_of_speech”：“名词”，“发音”：[{“audio”：[{“lang”：“British English”，“type” “发音”， “URL”： “/ V2 /字典/资产/ LDOCE/gb_pron/vodka0205.mp3”}]， “IPA”： “vɒdkə”}，{ “音频”：[{ “郎”：“阿梅尔ican English“，”type“：”发音“，”url“：”/ v2/dictionaries/assets/ldoce/us_pron/vodka.mp3“}]，”ipa“：”vɑːdkə“，”lang“：” “}]，”感官“：[{”definition“：[”来自俄罗斯的一种清淡的酒精饮料，或者一杯这样的“]}]，”url“：”/ v2/dictionaries/entries/cqAG3cXCxZ“} ]}

是否有原因为什么NSJSONSerialization正在更改我的数据，因为打印出来的数据与Pearson API返回的数据明显不同？

Answer 1

我不相信它实际上正在改变价值观，我相信你只是看着不同的表现。（如果Swift的行为类似于Objective-C），print（x）将调用x上的“description”方法，该方法可以以任何喜欢的格式输出对象。

您可能想要做的是使用dataWithJSONObject：options：error（与您所做的基本相反的调用）重新编码数据，并查看表示的内容。

https://developer.apple.com/library/ios/documentation/Foundation/Reference/NSJSONSerialization_Class/#//apple_ref/occ/clm/NSJSONSerialization/dataWithJSONObject:options:error：