將Swift 3數組轉換爲JSON

Question

我有字典數組[[String：Any]]我想將其轉換爲JSON字符串。但我不知道如何開始。我試過JSONSerialization.data（withJSONObject：array，options：.prettyPrinted），並將數組傳遞給方法，但它顯示錯誤。任何解決方案請在下面評論謝謝。

Answer 1

嘗試如下的代碼...

do { 

    //Convert to Data 
    let jsonData = try JSONSerialization.data(withJSONObject: dictionaryArray, options: JSONSerialization.WritingOptions.prettyPrinted) 

    //Do this for print data only otherwise skip 
    if let JSONString = String(data: jsonData, encoding: String.Encoding.utf8) { 
     print(JSONString) 
    } 

    //In production, you usually want to try and cast as the root data structure. Here we are casting as a dictionary. If the root object is an array cast as [AnyObject]. 
    var json = try JSONSerialization.jsonObject(with: jsonData, options: JSONSerialization.ReadingOptions.mutableContainers) as? [String: AnyObject] 


    } catch { 
     print(error.description) 
    }