Idea compile error report sun.misc.BASE64Decoder upgrade processing
warn:
17:01:15 /deploy/jenkins/workspace/auto-java-test/utils/ImageBase64Utils.java:67: warning: BASE64Encoder is internal proprietary API and may be removed in a future release
17:01:15 BASE64Encoder encoder = new BASE64Encoder();
import sun.misc.BASE64Decoder;
Alternative writing:
//Since JDK 1.8, the JDK public APIs of java.util.Base64.Decoder and java.util.Base64.Encoder have been provided, which can replace the JDK internal APIs of sun.misc.BASE64Decoder and sun.misc.BASE64Encoder.
//byte[] bytes = new BASE64Decoder().decodeBuffer(base64);
byte[] bytes = Base64.getDecoder().decode(base64);

//Or use method
import org.apache.commons.codec.binary.Base64;
return Base64.encodeBase64String(encrypted);

demo test class

@Test
    public void test2() throws Exception{
        //Decoder and java.util.Base64.Encoder are available from JDK 1.8 onwards, replacing the internal JDK APIs of sun.misc. .
        //byte[] bytes = new BASE64Decoder().decodeBuffer(base64);

        System.out.println("-----------------------Early Write ----------------------");
        String text = "String text";
         BASE64Encoder encoder = new BASE64Encoder();
         BASE64Decoder decoder = new BASE64Decoder();
         byte[] textByte = text.getBytes("UTF-8");
        //Code
         String encodedText = encoder.encode(textByte);
        System.out.println(encodedText);
        //Decoding
        System.out.println(new String(decoder.decodeBuffer(encodedText), "UTF-8"));

        /**
         * Compared with the Base64 codecs provided by sun.mis c suite and Apache Commons Codec, the Base64 provided by Java 8 has better performance. In the actual test of encoding and decoding speed, Base64 provided by Java 8 is at least 11 times faster than that provided by sun.mis c suite and at least 3 times faster than that provided by Apache Commons Codec. So if you want to use Base64 in Java, the Base64 category provided by the java .util package under Java 8 is definitely the first choice!
         * https://blog.csdn.net/zhou_kapenter/article/details/62890262
         */
        System.out.println("-----------------------New writing style----------------------");
        byte[] test11 = Base64.getEncoder().encode(textByte);
        System.out.println("test11_string="+new String(test11, "UTF-8"));
        byte[] bytes11 = Base64.getDecoder().decode(test11);
        System.out.println("test11="+new String(bytes11, "UTF-8"));

        System.out.println("-----------------------apache writing style----------------------");
        String test22 = org.apache.tomcat.util.codec.binary.Base64.encodeBase64String(textByte);
        System.out.println("test22_string="+test22);
        byte[] bytes22 = org.apache.tomcat.util.codec.binary.Base64.decodeBase64(test22);
        System.out.println("test22="+new String(bytes22, "UTF-8"));

        /**
         * Print results: Consistent results
         * ----------------------- early write ----------------------
         * 5a2X5Liy5paH5a2X
         * String text
         * ----------------------- new write ----------------------
         * test11 string = 5a2X5Liy5paH5a2X
         * test11=string literal
         * -----------------------apache writeup ----------------------
         * test22 string=5a2X5Liy5paH5a2X
         * test22=word string literal
         */
    }