public static String md5Hex(final String data) {
        return org.apache.commons.codec.digest.DigestUtils.md5Hex(data);
    }
Calculates the MD5 digest and returns the value as a 32 character hex string.
@param data  Data to digest
@return MD5 digest as a hex string
shenyu-common/src/main/java/org/apache/shenyu/common/utils/DigestUtils.java