ibatis配置SQL

<select id="selectcount" parameterClass="java.util.Map" resultClass="java.lang.Integer">
    select ...
    from ...
    <![CDATA[
           where ...
           ]]>   ----查询所有
             <isNotNull prepend="AND" property="wlsId" >
               (t.WLA_SYSID = #wlsId# )
           </isNotNull>   ----查询条件
           <isNotNull prepend="AND" property="wlaLaw" >   
----property是JSP页面中dom的ID值

               (t.WLA_STUID = #wlaLaw# )----##内为DataStore内Parameter的名称
           </isNotNull>
           <isNotNull prepend="AND" property="wlaStatistics" >
               (t.WLA_STATISTICS_CODE = #wlaStatistics# )
           </isNotNull>
  </select>