ios - SwiftyJSON - 解析时如何循环子节点

Question

我尝试使用 SwiftyJSON 解析以下 JSON 结构，但我无法弄清楚如何循环遍历“sections”节点。我当前的代码返回每个部分的第一个部分节点，但我无法访问“Section 1b/Section 2b”元素。

{
"category": [{
    "categoryId": 1,
    "categoryHeader": "Category 1",
    "sections": [{
        "section": "Section 1a title",
        "body": "Section 1a body"
    }, {
        "section": "Section 1b title",
        "body": "Section 1b body"
    }]
}, {
    "categoryId": 2,
    "categoryHeader": "Category 2",
    "sections": [{
        "section": "Section 2a title",
        "body": "Section 2a body"
    },{
        "section": "Section 2a title",
        "body": "Section 2b body"
    }]
}]

}

我的代码是:

let path: String = NSBundle.mainBundle().pathForResource("jsonFile", ofType: "json") as String!
let data = NSData(contentsOfFile: path) as NSData!

var objects = [[String: String]]()
let json = JSON(data: data)

 func parseJSON(json: JSON) {
    for category in json["category"].arrayValue {
        let categoryHeader = category["categoryHeader"].stringValue
        let section = category["sections"][0]["section"].stringValue
        let sectionBody = category["sections"][0]["body"].stringValue
        let obj = ["categoryHeader": categoryHeader, "section": section, "body": sectionBody] //, "body": body, "title": sigs]

    objects.append(obj)
    }
    tableView.reloadData()
}

我知道我需要循环遍历各部分以检索所有值，但我不知道如何操作。

编辑:尝试使用以下命令来执行此操作允许我访问所有部分节点；但随后“categoryHeader”会输出“x”次，具体取决于有多少个部分:

func parseJSON(json: JSON) {
    for category in json["category"].arrayValue {
        let categoryHeader = category["categoryHeader"].stringValue

        for section in category["sections"].arrayValue {
            let sectionName = section["section"].stringValue
            let body = section["body"].stringValue
            let obj = ["categoryHeader": categoryHeader, "section": sectionName, "body": body]   
    objects.append(obj)
        }
    }
}

Answer 1

一种方法可能是这样的。

编辑:我让这段代码在 Playground 上工作。

var objects = [[String: String]]()


func parseJSON(json: JSON) {

    let jsonResults = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as! NSDictionary
    let json = JSON.self(jsonResults)
   // let json = JSON(data: data) // moved this line
   let count: Int? = json.dictionary?.count

   let ct = 0
   if  ct < count {
     for index in 0...count!-1 {
       for category in json["category"].arrayValue {
        let categoryHeader = category["categoryHeader"].stringValue
        let section = category["sections"][0]["section"].stringValue
        let sectionBody = category["sections"][0]["body"].stringValue
        let obj = ["categoryHeader": categoryHeader, "section": section, "body": sectionBody] //, "body": body, "title": sigs]

        objects.append(obj)
      }
   }
    tableView.reloadData()
}