swift - 在 Swift 3 中将字符串转换为 base64

Question

let strsize = 10_000_000
let tries = 100
var longstring:String = "a"

for i in 1...strsize {
longstring += "a"
}

for i in 1..<2 {
let basestring = NSData(base64EncodedString: longstring, options: .IgnoreUnknownCharacters)
print(basestring)
}

在命令提示符下编写代码。为我得到的 Swift 3 编写的正确代码是什么 use of unresolved identifier NSData 。大多数关于将字符串编码为 base64 的教程都不起作用。

这适用于 Linux 还是 Mac？ http://studyswift.blogspot.sg/2016/03/convert-nsdatauint8-to-base64-in-swift.html

Answer 1

改用这个:

let longstring = "test123"
if let data = (longstring).data(using: String.Encoding.utf8) {
    let base64 = data.base64EncodedString(options: Data.Base64EncodingOptions(rawValue: 0))
    print(base64)// dGVzdDEyMw==\n
}