mybatis 报错 invalid comparison: java.time.LocalDateTime and java.lang.String

Error background:

      It is necessary to determine whether the time type is in the form of ”, and then an error appears invalid comparison: java.time.LocalDateTime and java.lang.String.

Cause of error:

                    <if test="(search.startTime != null or search.startTime != '') and (search.endTime != null or search.endTime != '' )">

Reason of error:

      This error is caused by a problem with the mybatis version. In this version, the time cannot be compared with an empty string. 3.3.* version should have this problem.

Solution:

      Delete the following paragraph

search.startTime != ''

Date comparison can use date method:

<if test="startTime != null">
    and date(a.start_time) <![CDATA[>=]]>date(#{startTime,jdbcType=TIMESTAMP})
</if>
<if test="endTime != null ">
    and  date(a.end_time ) <![CDATA[<=]]> date(#{endTime,jdbcType=TIMESTAMP})
</if>