写了这么多次，一直没记住，每次都要上网查一下，好尴尬…今天来记录一下
<if test
="paramsMap.beginDate != null and paramsMap.beginDate != '' ">
and srd
.plan_drop_time
<![CDATA
[>=]]> #
{paramsMap
.beginDate
}
</if>
<if test
="paramsMap.endDate != null and paramsMap.endDate != '' ">
and srd
.plan_drop_time
<![CDATA
[<=]]> #
{paramsMap
.endDate
}
</if>
