package com.supersavedriving.user.modular.system.util.MallBook.util;

import cn.hutool.core.util.StrUtil;


public class StringUtil extends StrUtil {

    /**
     * null转为空字符串
     *
     * @param str
     * @return
     */
    public static String convertNull(String str) {
        if (str == null) {
            return "";
        }
        return str;
    }


}