bind 标签

<select id="finduserbylikename"  parameterType="string"  resultMap="courseResult">

select * from course where 1=1

<if test="_parameter!=null and  _parameter!=''">

and name like #{_parameter}

</if>

</select>

<select id="finduserbylikename2"  parameterType="map"  resultMap="courseResult">

<bind name="pattern" value="'%' + _parameter.name + '%'" />

select * from course where 1=1

<if test="_parameter.name!=null and  _parameter.name!=''">

and name like #{pattern}

</if>

</select>