Swift 2.0：Json 数组解析错误

Question

在 Swift 1.2 中

https://gist.github.com/anonymous/a167148a8a6d169292ff

在 Swift 2.0 中（错误） ，所以我将代码更改如下。

let url = NSURL(string:"http://dl-8.one2up.com/onetwo/content/2015/6/15/9c3b51249fbbe20ca9d841401e276d97.php")
    let allContactsData = NSData(contentsOfURL:url!)

    do{
        var allContacts : AnyObject! = try NSJSONSerialization.JSONObjectWithData(allContactsData!, options: NSJSONReadingOptions())
    }catch{
    print(error)
    }

    if let json = allContacts as? Array<AnyObject>  {
    print(json)


        for index in 0...json.count-1 {

            let contact : AnyObject? = json[index]

            let collection = contact! as! Dictionary<String, AnyObject>

            let name : AnyObject? = collection["AnimeName"]
            let cont : AnyObject? = collection["Episodes"]

            names.append(name as! String)
            episodes.append(cont as! String)
        }

    }
    print(names)
    print(episodes)

但这不起作用。

如果让 json = allContacts as?数组

错误：使用未解析的标识符“allContacts”

Answer 1

您的 allContacts 变量是在 do 块中创建的，因此它的范围仅限于 do 块，并且不能在该块之外访问。如果您希望它在块外可访问，请在块外声明它，然后继续在块内分配它。即：

let allContactsData = NSData(contentsOfURL:url!)
var allContacts:AnyObject
do{
   allContacts = try NSJSONSerialization.JSONObjectWithData(allContactsData!, options: NSJSONReadingOptions())
}catch{
print(error)
}

Answer 2

do{
var allContacts = try NSJSONSerialization.JSONObjectWithData(allContactsData!, options: NSJSONReadingOptions()) as! [Dictionary<String, AnyObject>]
for contact in allContacts {
let name : AnyObject? = contact["AnimeName"]
let cont : AnyObject? = contact["Episodes"]

names.append(name as! String)
episodes.append(cont as! String)
}
}catch{
print(error)
}