URLEncode和URLDecode

URLEncode

extension String {
// URL Decode
func URLDecode() -> String? {
return self.stringByRemovingPercentEncoding // stringByReplacingPercentEscapesUsingEncoding is deprecated
}

// URL Encode
func URLEncode() -> String? {
    return self.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet(charactersInString: "!*'\"();:@&=+$,/?%#[]% ").invertedSet) // `CFURLCreateStringByAddingPercentEscapes` is deprecated
}

}

URLDecode

url.absoluteString.stringByRemovingPercentEncoding