json之使用 swiftjson 遍历对象

我正在使用 SwiftJSON ( https://github.com/lingoer/SwiftyJSON ) 遍历下面的 json:

{ 
    "response": { 
        "codes": [ 
            { 
                "id": "abc", 
                "name": "Bob Johnson" 
            }, 
            { 
                "id": "def", 
                "name": "Benson" 
            } 
        ] 
    } 
} 

我正在尝试遍历 codes block 。到目前为止，我正在尝试:

let json = JSON(data: getJSON("<json_url>")) 
 
    var people = json["response"]["codes"] 
 
    let dataArray = nearBy.arrayValue!; 
 
    println("Data items count: \(dataArray.count)") 
 
    for item: AnyObject in dataArray { 
 
        if let userName = item["name"].string{ 
            //Calm down, take it easy, the ".string" property still produces the correct Optional String type with safety 
            println("Value" + userName) 
        } 
 
    } 

我不确定我这样做是否正确。我将如何正确地遍历 dataArray，或者可能有比我正在尝试的更好的循环方式？

除了使用 SwiftJSON，我还尝试使用下面的方法来解析 JSON，但我不知道如何循环遍历这些项目:

func parseJSON(inputData: NSData) -> NSDictionary{ 
    var error: NSError? 
    var boardsDictionary: NSDictionary = NSJSONSerialization.JSONObjectWithData(inputData, options: NSJSONReadingOptions.MutableContainers, error: &error) as NSDictionary 
 
    return boardsDictionary 
} 

如果这两种方法都能奏效，那将会很有帮助。

请您参考如下方法:

{  "callout":{  "title":"Callout title","image":"http://image","url":"http://callouturl"},"categories":[  {  "category":"Category 1","articles":[  {  "title":"title 1","image":"image 1","url":"http://url1.com"},{ "title":"title 2","image":"image 2","url":"http://url2.com"}]},{  "category":"Category 2","articles":[  { "title":"title 3","image":"image 3","url":"http://url3.com"},{ "title":"title 4","image":"image 4","url":"http://url4.com"}]}]} 

鉴于上面的 JSON 片段。我像这样使用 SwiftyJSON 进行解析:

let json:JSON = JSON(data:myData) 
 
var catCollections:[CategoryCollection] = [] 
 
//gather category collections of articles 
for (index: String, cat: JSON) in json["categories"] { 
 
    //collect articles within each category 
    var articles:[ArticleItem] = [] 
    for(index:String, art:JSON) in cat["articles"] { 
        let artTitle = art["title"].string 
        let artImage = art["image"].string 
        let artUrl = art["url"].string 
 
        if(artTitle != nil && artUrl != nil) { 
            let articleItem = ArticleItem(title: artTitle!, url: artUrl!, imageURL: artImage) 
            articles.append(ArticleItem) 
        } 
 
    } 
 
    //create category collection for each category 
    let catTitle = cat["category"].string ?? "" 
    let catCollection = CategoryCollection(title: catTitle, articles: articles) 
    catCollections.append(catCollection) 
} 
 
var callout:CalloutItem? 
//check for existance of callout item 
if let calloutTitle = json["callout"]["title"].string { 
    if let calloutUrl = json["callout"]["url"].string { 
        callout = CalloutItem(title: calloutTitle, url: calloutUrl, imageURL: json["callout"]["image"].string) 
    } 
}