NacosRefreshHistory uses BigInteger's toString(16) method to calculate md5.

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NacosRefreshHistory 直接采用 BigInteger 的 toString(16) 方法来计算 MD5,是否有计算结果长度不足32位数的风险？
NacosRefreshHistory uses BigInteger's toString(16) method to calculate md5. Is there a risk that the calculated result will be less than 32 digits long?

Which Component
Nacos 配置中心
Nacos(spring-cloud-starter-alibaba-nacos-config)
版本: 2023.x
version: 2023.x

Describe what problem you have encountered
直接采用 BigInteger#toString(16) 计算 md5
NacosRefreshHistory uses BigInteger's toString(16) method to calculate md5.

// com.alibaba.cloud.nacos.refresh.NacosRefreshHistory#md5
private String md5(String data) {
    if (StringUtils.isEmpty(data)) {
        return null;
    }
    if (null == md) {
        try {
            md = MessageDigest.getInstance("MD5");
        }
        catch (NoSuchAlgorithmException ignored) {
            return "unable to get md5";
        }
    }

   // toString(16) ?
    return new BigInteger(1, md.digest(data.getBytes(StandardCharsets.UTF_8)))
        .toString(16);
}

Describe what information you have read
直接阅读源码发现的。
I have read the source code of Nacos(spring-cloud-starter-alibaba-nacos-config).