1、JSONString转换为字典 /// JSONString转换为字典 ////// - Parameter jsonString: <#jsonString description#>/// - Returns: <#return value description#>func getDictionaryFromJSONString(jsonString:String) ->NSDictionary{ let jsonData:Data = jsonString.data(using: .utf8)! let dict =try? JSONSerialization.jsonObject(with: jsonData, options: .mutableContainers) ifdict != nil { returndictas! NSDictionary } return NSDictionary() }2、字典转换为JSONString /** 字典转换为JSONString - parameter dictionary: 字典参数 - returns: JSONString */func getJSONStringFromDictionary(dictionary:NSDictionary) -> String { if(!JSONSerialization.isValidJSONObject(dictionary)) { print("无法解析出JSONString") return"" } let data : NSData! =try? JSONSerialization.data(withJSONObject: dictionary, options: [])asNSData! let JSONString = NSString(data:dataas Data,encoding: String.Encoding.utf8.rawValue) returnJSONString!asString }