从Dot net到Java的AES 256解密

using System;
using System.Security.Cryptography;
using System.Text;

public class AESDecryptor
{
    public static string Decrypt(string encryptedText, string key, string iv)
    {
        byte[] encryptedBytes = Convert.FromBase64String(encryptedText);
        byte[] keyBytes = Encoding.UTF8.GetBytes(key);
        byte[] ivBytes = Encoding.UTF8.GetBytes(iv);

        using (AesManaged aes = new AesManaged())
        {
            aes.Key = keyBytes;
            aes.IV = ivBytes;
            aes.Mode = CipherMode.CBC;
            aes.Padding = PaddingMode.PKCS7;

            ICryptoTransform decryptor = aes.CreateDecryptor(aes.Key, aes.IV);

            using (var ms = new System.IO.MemoryStream(encryptedBytes))
            using (var cs = new CryptoStream(ms, decryptor, CryptoStreamMode.Read))
            using (var sr = new System.IO.StreamReader(cs))
            {
                return sr.ReadToEnd();
            }
        }
    }
}

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.util.Base64;

public class AESDecryptor {
    public static String decrypt(String encryptedText, String key, String iv) throws Exception {
        byte[] encryptedBytes = Base64.getDecoder().decode(encryptedText);
        byte[] keyBytes = key.getBytes("UTF-8");
        byte[] ivBytes = iv.getBytes("UTF-8");

        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        SecretKeySpec secretKeySpec = new SecretKeySpec(keyBytes, "AES");
        IvParameterSpec ivParameterSpec = new IvParameterSpec(ivBytes);
        cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, ivParameterSpec);

        byte[] decryptedBytes = cipher.doFinal(encryptedBytes);
        return new String(decryptedBytes, "UTF-8");
    }
}