小賢的部落格

 

var str = "Hello, playground+"
var allowCharactoers = CharacterSet.urlQueryAllowed
allowCharactoers.remove(Unicode.Scalar("+"))

print(str.addingPercentEncoding(withAllowedCharacters: allowCharactoers))

 

輸出： Optional("Hello,%20playground%2B")

參考資料：

https://stackoverflow.com/questions/31577188/how-to-encode-into-2b-with-nsurlcomponents