java aes加密调用

以下是一个 Java 中使用 AES 加密的示例代码：

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

public class AesEncryption {
    private static final String ALGORITHM = "AES";
    private static final String KEY = "mysecretkey12345"; // 密钥必须是16个字符长

    public static String encrypt(String valueToEncrypt) {
        try {
            SecretKeySpec secretKeySpec = new SecretKeySpec(KEY.getBytes(StandardCharsets.UTF_8), ALGORITHM);
            Cipher cipher = Cipher.getInstance(ALGORITHM);
            cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
            byte[] encrypted = cipher.doFinal(valueToEncrypt.getBytes());
            return Base64.getEncoder().encodeToString(encrypted);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    public static String decrypt(String encryptedValue) {
        try {
            SecretKeySpec secretKeySpec = new SecretKeySpec(KEY.getBytes(StandardCharsets.UTF_8), ALGORITHM);
            Cipher cipher = Cipher.getInstance(ALGORITHM);
            cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
            byte[] original = cipher.doFinal(Base64.getDecoder().decode(encryptedValue));
            return new String(original);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    public static void main(String[] args) {
        String valueToEncrypt = "Hello, world!";
        String encryptedValue = encrypt(valueToEncrypt);
        System.out.println("Encrypted value: " + encryptedValue);
        String decryptedValue = decrypt(encryptedValue);
        System.out.println("Decrypted value: " + decryptedValue);
    }
}

这个示例代码中使用了 Base64 编码来将加密后的字节数组转化为字符串，你可以根据实际需求自行修改。