// 編碼:
let contentString1 = contentString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!
print("編碼后:",contentString1)
// 解碼:
let contentString2 = contentString.removingPercentEncoding!
print("解碼后:",contentString2)
// 編碼:
let contentString1 = contentString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!
print("編碼后:",contentString1)
// 解碼:
let contentString2 = contentString.removingPercentEncoding!
print("解碼后:",contentString2)