package com.oy;

import java.nio.charset.StandardCharsets;

import java.util.Base64;

import org.junit.Test;

public class demo04 {

    final Base64.Decoder decoder = Base64.getDecoder();

    final Base64.Encoder encoder = Base64.getEncoder();

    @Test

    public void testBase64() throws Exception {

        byte[] textByte = "admin:123".getBytes(StandardCharsets.UTF_8);

        String encodedText = encoder.encodeToString(textByte);//编码

        System.out.println(encodedText);//YWRtaW46MTIz

        System.out.println(new String(decoder.decode(encodedText), "UTF-8"));//解码

    }

}