提供的DEMO问题

有木有替换本地的jre里的2个文件？

您好，麻烦您能debug到这个类里面吗?看一下这个Exception究竟是什么具体的异常。
DingTalkEncryptor
代码就在你本地。请注意传入的参数是不是null,


private String encrypt(String random, String plaintext) throws DingTalkEncryptException {
    try {
        byte[] randomBytes = random.getBytes(CHARSET);
        byte[] plainTextBytes = plaintext.getBytes(CHARSET);
        byte[] lengthByte = Utils.int2Bytes(plainTextBytes.length);
        byte[] corpidBytes = corpId.getBytes(CHARSET);
        ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
        byteStream.write(randomBytes);
        byteStream.write(lengthByte);
        byteStream.write(plainTextBytes);
        byteStream.write(corpidBytes);
        byte[] padBytes = PKCS7Padding.getPaddingBytes(byteStream.size());
        byteStream.write(padBytes);
        byte[] unencrypted = byteStream.toByteArray();
        byteStream.close();
        Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
        SecretKeySpec keySpec = new SecretKeySpec(aesKey, "AES");
        IvParameterSpec iv = new IvParameterSpec(aesKey, 0, 16);
        cipher.init(Cipher.ENCRYPT_MODE, keySpec, iv);
        byte[] encrypted = cipher.doFinal(unencrypted);
        String result = base64.encodeToString(encrypted);
        return result;
    } catch (Exception e) {
        throw new DingTalkEncryptException(DingTalkEncryptException.COMPUTE_ENCRYPT_TEXT_ERROR);
    }
    }

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一般来说，环境问题很少