如何解析微信小程序手机号异常 Exception:javax.crypto.BadPaddingException: Given final block not properly padded

如何解析微信小程序手机号异常 Exception:javax.crypto.BadPaddingException: Given final block not properly padded，很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。

Exception:javax.crypto.BadPaddingException: Given final block not properly padded. Such issues can arise if a bad key is used during decryption.
偶发性异常：没登录时用AES/CBC/PKCS7Padding，登录后用AES/CBC/PKCS5Padding；

public static String decrypt(String keyStr, String ivStr, String encDataStr)throws Exception {        try {            logger.info("使用 AES/CBC/PKCS5Padding 解密手机号");            byte[] encData = Base64Util.decode(encDataStr);            byte[] iv =Base64Util.decode(ivStr);            byte[] key = Base64Util.decode(keyStr);            AlgorithmParameterSpec ivSpec = new IvParameterSpec(iv);            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");            SecretKeySpec keySpec = new SecretKeySpec(key, "AES");            cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec);            return new String(cipher.doFinal(encData),"UTF-8");        }catch (Exception e){            logger.info("使用 AES/CBC/PKCS7Padding 解密手机号");            byte[] encData = Base64Util.decode(encDataStr);            byte[] iv =Base64Util.decode(ivStr);            byte[] key = Base64Util.decode(keyStr);            AlgorithmParameterSpec ivSpec = new IvParameterSpec(iv);            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS7Padding");            SecretKeySpec keySpec = new SecretKeySpec(key, "AES");            cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec);            return new String(cipher.doFinal(encData),"UTF-8");        }    }

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