jdk1.8_Base64

(Updated: )
技术
,

Base64

static class Base64.Encoder

该类实现一个编码器，使用 Base64 编码来编码字节数据。

static class Base64.Decoder

该类实现一个解码器，使用 Base64 编码来解码字节数据。

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public static void main(String args[]){
    try{
            // 使用基本编码
            String base64encodedString = Base64.getEncoder().encodeToString("runoob?java8".getBytes("utf-8"));
            System.out.println("Base64 编码字符串 (基本) :" + base64encodedString);
			//Base64 编码字符串 (基本) :cnVub29iP2phdmE4
			
            // 解码
            byte[] base64decodedBytes = Base64.getDecoder().decode(base64encodedString);

            System.out.println("原始字符串: " + new String(base64decodedBytes, "utf-8"));
			//原始字符串: runoob?java8
			
            base64encodedString = Base64.getUrlEncoder().encodeToString("runoob?java8".getBytes("utf-8"));
            System.out.println("Base64 编码字符串 (URL) :" + base64encodedString);
			//Base64 编码字符串 (URL) :cnVub29iP2phdmE4

            StringBuilder stringBuilder = new StringBuilder();

            for (int i = 0; i < 10; ++i) {
                stringBuilder.append(UUID.randomUUID().toString());
            }

            byte[] mimeBytes = stringBuilder.toString().getBytes("utf-8");
            String mimeEncodedString = Base64.getMimeEncoder().encodeToString(mimeBytes);
            System.out.println("Base64 编码字符串 (MIME) :" + mimeEncodedString);
			//Base64 编码字符串 (MIME) :
			//ZTA4NjkwNzktYTcxZi00NWQwLWE0MmMtOTVlN2Y5NDZhNjNmNzRkMDIzZGEtZjI3Zi00NDhkLTlk
			//YzMtYzNlYmJkNjFjMzA2NDNhZjhhOWMtYTVlZC00YzIwLTgxMTItMjhkZTRiYjMxZjc2NzBjMzMy
			//MjctZTQyZC00MzYzLWE1ZDItMjM3MjM5ZTM0ZTQyYTYxMzFlMDUtOWJlZC00MGQ4LThjNTgtYWYy
			//ZWNmODgwNjBkYjEzOGM3OTYtOGRjYi00ODA4LWE5MmEtOWEyZDllOWI1ODVlNDBjNTMwYjctYjJj
			//NC00MDM4LWE5NjEtMzcwZjgyZDY0ZDU1MWY0OTNjMTEtYzc2NC00MmIxLTg4OTQtOTI5M2ZjMjA2
			//OWUyOTgzZDM4YmMtMjZkZC00OTg2LWJhYWUtNjdjMTkxMjkzMDllMTI4MGQwMjQtM2JmZi00MTA1
			//LTllZTItMTkxMjVkMTAzYWZk
			
        }catch(UnsupportedEncodingException e){
            System.out.println("Error :" + e.getMessage());
        }
    }