Swift Data和字符串互轉

let str:String = "意大利"
//字符串轉Data
let data = str.data(using: String.Encoding.utf8)
//Data轉字符串
let newStr = String(data: data!, encoding: String.Encoding.utf8)
print("data=" , data!  , "\n" ,  "newStr=" , newStr!)

輸出結果

data= 9 bytes 
newStr= 意大利