swift String to UTF8编码

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swift String to UTF8编码

var testString:String = "wo shi string"
var utf8String = (testString as NSString).UTF8String

iOS Swift 3.0 String encoding 转换

"你好".addingPercentEncoding(withAllowedCharacters: .urlHostAllowed)! 

说真的,这个方法我找了俩小时。