Java - Base64字符串输入和输出文本

import java.nio.charset.StandardCharsets;
import java.util.Base64;

public class Base64Example {
    public static void main(String[] args) {
        String text = "Hello, world!";
        String base64String = Base64.getEncoder().encodeToString(text.getBytes(StandardCharsets.UTF_8));
        System.out.println("Base64 string: " + base64String);

        byte[] decodedBytes = Base64.getDecoder().decode(base64String);
        String decodedText = new String(decodedBytes, StandardCharsets.UTF_8);
        System.out.println("Decoded text: " + decodedText);
    }
}