如何在Java中使用3DES加密/解密？

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.StandardCharsets;
import java.util.Base64;

public static SecretKey generate3DESKey() throws Exception {
    KeyGenerator keyGen = KeyGenerator.getInstance("DESede");
    keyGen.init(168);
    return keyGen.generateKey();
}

public static String encrypt3DES(String data, SecretKey key) throws Exception {
    Cipher cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding");
    cipher.init(Cipher.ENCRYPT_MODE, key);
    byte[] encryptedBytes = cipher.doFinal(data.getBytes(StandardCharsets.UTF_8));
    return Base64.getEncoder().encodeToString(encryptedBytes);
}

public static String decrypt3DES(String encryptedData, SecretKey key) throws Exception {
    Cipher cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding");
    cipher.init(Cipher.DECRYPT_MODE, key);
    byte[] decryptedBytes = cipher.doFinal(Base64.getDecoder().decode(encryptedData));
    return new String(decryptedBytes, StandardCharsets.UTF_8);
}

public static void main(String[] args) {
    try {
        SecretKey key = generate3DESKey();
        String data = "Hello, 3DES!";
        String encryptedData = encrypt3DES(data, key);
        System.out.println("Encrypted data: " + encryptedData);
        String decryptedData = decrypt3DES(encryptedData, key);
        System.out.println("Decrypted data: " + decryptedData);
    } catch (Exception e) {
        e.printStackTrace();
    }
}