Mybatis插入语句默认值不生效的问题及解决

<!--一种动态的insert语句-->
<sql id="userInfoColumns">
    <trim suffixOverrides=",">
        <if test="userName != null">userName,</if>
        <if test="age != null">age,</if>
        <if test="sex != null">sex</if>
    </trim>
</sql>
 
<sql id="userInfoValues">
    <trim suffixOverrides=",">
        <if test="userName != null">#{userName},</if>
        <if test="age != null">#{age},</if>
        <if test="sex != null">#{sex}</if>
    </trim>
</sql>
 
<insert id="insert" parameterType="com.example.mybatisdemo1.domin.UserInfo" keyColumn="userInfoId" keyProperty="userInfoId" useGeneratedKeys="true">
    insert into UserInfo(<include refid="userInfoColumns"/>)
    values (<include refid="userInfoValues"/>)
</insert>

@Component
public class MetaObjectHandlerConfig implements MetaObjectHandler {
 
    @Override
    public void insertFill(MetaObject metaObject) {
        Date currentDate = new Date();
        //默认未删除
        setFieldValByName("isDeleted", Constant.DATA_NOT_DELETED,metaObject);
        //创建时间默认当前时间
        setFieldValByName("createTime", currentDate,metaObject);
    }
 
    @Override
    public void updateFill(MetaObject metaObject) {
        Date currentDate = new Date();
        //修改时间
        setFieldValByName("modifyTime",currentDate,metaObject);
    }
}