★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★➤微信公众号：山青咏芝（shanqingyongzhi）➤博客园地址：山青咏芝（https://www.cnblogs.com/strengthen/ ）➤GitHub地址：https://github.com/strengthen/LeetCode➤原文地址：https://www.cnblogs.com/strengthen/p/10670482.html ➤如果链接不是山青咏芝的博客园地址，则可能是爬取作者的文章。➤原文已修改更新！强烈建议点击原文地址阅读！支持作者！支持原创！★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★
扩展方式1：
1 extension String { 2 //Base64编码 3 func encodBase64() -> String? { 4 if let data = self.data(using: .utf8) { 5 return data.base64EncodedString() 6 } 7 return nil 8 } 9 10 //Base64解码 11 func decodeBase64() -> String? { 12 if let data = Data(base64Encoded: self) { 13 return String(data: data, encoding: .utf8) 14 } 15 return nil 16 } 17 }扩展方式2：
1 extension String { 2 //Base64编码 3 func encodBase64() -> String? 4 { 5 let strData = self.data(using: String.Encoding.utf8) 6 let base64String = strData?.base64EncodedString(options: NSData.Base64EncodingOptions.init(rawValue: 0)) 7 return base64String 8 } 9 10 //Base64解码 11 func decodeBase64() -> String? 12 { 13 let decodedData = NSData(base64Encoded: self, options: NSData.Base64DecodingOptions.init(rawValue: 0)) 14 let decodedString = NSString(data: decodedData! as Data, encoding: String.Encoding.utf8.rawValue) as String? 15 return decodedString 16 } 17 }测试代码：
1 var str:String = "Strengthen" 2 let strBase64:String = str.encodBase64()! 3 print(strBase64) 4 //Print U3RyZW5ndGhlbg== 5 6 print(strBase64.decodeBase64()) 7 //Print Optional("Strengthen")
转载于:https://www.cnblogs.com/strengthen/p/10670482.html
