1、JSONString轉(zhuǎn)換為字典

func getDictionaryFromJSONString(jsonString:String) ->NSDictionary{

let jsonData:Data= jsonString.data(using: .utf8)!
let dict = try?JSONSerialization.jsonObject(with: jsonData, options: .mutableContainers)
if dict != nil {
    return dict as! NSDictionary
}return NSDictionary()

}

2、字典轉(zhuǎn)換為JSONString

/**
字典轉(zhuǎn)換為JSONString
- parameter dictionary: 字典參數(shù)
- returns: JSONString
*/
func getJSONStringFromDictionary(dictionary:NSDictionary) ->String { 
   if(!JSONSerialization.isValidJSONObject(dictionary)) {
   print("無(wú)法解析出JSONString")return""}
   let data : NSData! =try? JSONSerialization.data(withJSONObject: dictionary, options: [])asNSData!let JSONString= NSString(data:dataasData,encoding: String.Encoding.utf8.rawValue)returnJSONString!asString
}