JDK8的base64编解码、图片转base64

import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.util.Base64;

/**
 * JDK8新特性
 *
 * @Description
 * @Author quxiutao
 * @CreateTime 2022-09-28 17:35
 * @Remark
 * @Version 1.0
 **/
public class Base64Class {

    public static void main(String[] args) throws Exception{

        Base64.Encoder encoder = Base64.getEncoder();
        Base64.Decoder decoder = Base64.getDecoder();

        String text = "quxiutao";
        byte [] bytes = text.getBytes(StandardCharsets.UTF_8);

        //编码
        String encoderText = encoder.encodeToString(bytes);
        System.out.println(encoderText);

        //解码
        byte [] decoderByte = decoder.decode(encoderText);
        System.out.println(new String(decoderByte, StandardCharsets.UTF_8));

        //图片转base64
        String path = "C:\\Users\\QuXiuTao\\Desktop\\";
        String fileName = "123.png";
        InputStream inputStream = new FileInputStream(path + fileName);
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        byte [] bytes1 = new byte[1024];
        int length;
        while ((length = inputStream.read(bytes1)) != -1) {
            out.write(bytes1);
        }
        String base64Text = encoder.encodeToString(out.toByteArray());
        System.out.println(base64Text);


    }

}