Caused by: javax.crypto.IllegalBlockSizeException: Input length must be multiple of 16 when decrypting with padded cipher

这个错误是由于在使用AES解密时，解密的字符串的数组长度不是16的倍数导致的。解决这个问题的方法是在加密时，将加密的字符串长度补齐到16的倍数，可以使用PKCS5Padding或者PKCS7Padding进行填充。具体的实现方法可以参考以下代码示例：

public static String encrypt(String content, String password) {
    try {
        KeyGenerator kgen = KeyGenerator.getInstance("AES");
        SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
        secureRandom.setSeed(password.getBytes());
        kgen.init(128, secureRandom);
        SecretKey secretKey = kgen.generateKey();
        byte[] enCodeFormat = secretKey.getEncoded();
        SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
        Cipher cipher = Cipher.getInstance("AES");// 创建密码器
        byte[] byteContent = content.getBytes("utf-8");
        cipher.init(Cipher.ENCRYPT_MODE, key);// 初始化
        byte[] result = cipher.doFinal(byteContent);
        return Base64.encodeBase64String(result); // 加密
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

public static String decrypt(String content, String password) {
    try {
        KeyGenerator kgen = KeyGenerator.getInstance("AES");
        SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
        secureRandom.setSeed(password.getBytes());
        kgen.init(128, secureRandom);
        SecretKey secretKey = kgen.generateKey();
        byte[] enCodeFormat = secretKey.getEncoded();
        SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
        Cipher cipher = Cipher.getInstance("AES");// 创建密码器
        cipher.init(Cipher.DECRYPT_MODE, key);// 初始化
        byte[] result = cipher.doFinal(Base64.decodeBase64(content));
        return new String(result); // 解密
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}