extension Dictionary {

    /// 將Dictionary轉成Data
    var data: Data? {
        return try? JSONSerialization.data(withJSONObject: self, options: .prettyPrinted)
    }
}

extension Data {

    /// Data轉成Dictionary
    var dictionary: Dictionary<String, Any>? {
        if let obj = try? JSONSerialization.jsonObject(with: self, options: .mutableContainers),
            let dic = obj as? Dictionary<String, Any> {
            return dic
        }
        return nil
    }
}