public static String cutUserId(String userId) {
        if (!StringUtils.isNumeric(userId)) {
            return userId;
        }
        int startIndex = 0;
        for (int i = 0; i < userId.length(); i++) {
            char c = userId.charAt(i);
            // Query the first position that is not 0
            if (ZERO_CHAR == c) {
                startIndex = i + 1;
            } else {
                break;
            }
        }
        // Maybe the entire account is 0
        if (startIndex == userId.length()) {
            return "0";
        }
        return userId.substring(startIndex);
    }
Remove the 0 in front of the job number

@param userId employee ID
@return modified job number
chat2db-server/chat2db-server-tools/chat2db-server-tools-common/src/main/java/ai/chat2db/server/tools/common/util/EasyStringUtils.java