Java使用utf-8编码解码十六进制值

import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.StandardCharsets;

public class HexDecoder {
    public static void main(String[] args) {
        String hexString = "e4b8ade69687";
        
        // 将十六进制字符串转换为字节数组
        byte[] bytes = hexStringToByteArray(hexString);
        
        // 创建UTF-8编码的CharsetDecoder对象
        CharsetDecoder decoder = StandardCharsets.UTF_8.newDecoder();
        
        try {
            // 解码字节数组为CharBuffer对象
            String decodedString = decoder.decode(ByteBuffer.wrap(bytes)).toString();
            System.out.println(decodedString);
        } catch (CharacterCodingException e) {
            e.printStackTrace();
        }
    }
    
    private static byte[] hexStringToByteArray(String hexString) {
        int len = hexString.length();
        byte[] data = new byte[len / 2];
        
        for (int i = 0; i < len; i += 2) {
            data[i / 2] = (byte) ((Character.digit(hexString.charAt(i), 16) << 4)
                                 + Character.digit(hexString.charAt(i + 1), 16));
        }
        
        return data;
    }
}