Swift 3.1中的URL编码

Question

我需要将URL中的时间戳记从03-28-2017 11:00:05 +0000编码为以下格式01-01-1970％2000％3A00％3A00％20％2B0530。

我正在使用此代码：

updateCheckUrl = updateCheckUrl.addingPercentEncoding(withAllowedCharacters:  NSCharacterSet.urlQueryAllowed)

但是结果并不像预期的那样，只是在空格中添加％20。 我如何使用Swift 3.1获得所需的编码。

Answer 1

var allowedCharacters = CharacterSet.urlQueryAllowed
allowedCharacters.remove(charactersIn: "!*'();:@&=+$,/?%#[]")

let paramValue = "03-28-2017 11:00:05 +0000"
let encodedValue = paramValue.addingPercentEncoding(withAllowedCharacters: allowedCharacters) ?? ""
print(encodedValue)

Answer 2

let str = "03-28-2017 11:00:05 +0000"
let encode = str.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed) 
print(encode) // 03-28-2017%2011:00:05%20+0000