static final  String ALGORITHM = "AES";

/**
 * @Author:AZJ
 * @Description:生成金鑰
 * @Date:2022/4/12 16:27
 */
public static SecretKey generateKey() throws NoSuchAlgorithmException {
    KeyGenerator keyGenerator = KeyGenerator.getInstance(ALGORITHM);
    SecureRandom secureRandom = new SecureRandom();
    keyGenerator.init(secureRandom);
    SecretKey secretKey = keyGenerator.generateKey();
    return secretKey;
}

static Charset charset =Charset.forName("UTF-8");
/**
 * @Author:AZJ
 * @Description:加密
 * @Date:2022/4/12 16:29
 */
public static byte[] encrypt(String content,SecretKey secretKey) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
    return aes(content.getBytes(charset), Cipher.ENCRYPT_MODE,secretKey);
}

/**
 * @Author:AZJ
 * @Description:解密
 * @Date:2022/4/12 16:30
 */
public static String decrypt(byte[] contentArray,SecretKey secretKey) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
    byte[] result = aes(contentArray,Cipher.DECRYPT_MODE,secretKey);
    return new String(result,charset);
}

private static byte[] aes(byte[] contentArray, int mode,SecretKey secretKey) throws NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, NoSuchAlgorithmException, BadPaddingException {
    Cipher cipher = Cipher.getInstance(ALGORITHM);
    cipher.init(mode,secretKey);
    byte[] result = cipher.doFinal(contentArray);
    return result;
}

public static void main(String[] args){

    String content = "你好，我是加解密";
    SecretKey secretKey;
    try {
        secretKey = generateKey();
        byte[] encrypt = encrypt(content,secretKey);
        String decrypt = decrypt(encrypt,secretKey);
        System.out.println("加密後的結果為："+encrypt);
        System.out.println("解密後的結果為："+decrypt);
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (NoSuchPaddingException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    } catch (IllegalBlockSizeException e) {
        e.printStackTrace();
    } catch (BadPaddingException e) {
        e.printStackTrace();
    }
}