mybatis 传map参数

    List<WeixinUserLocationList> findweixinUserLocations(@Param("params") Map<String, Object> map);

<if test="params.accountId!=null">
            and a.accountid=#{params.accountId}
        </if>
        <if test="params.nickname!=null and params.nickname !=''">
            and a.nickname like '%${params.nickname}%'
        </if>
        <if test="params.beginDate!=null and params.beginDate!=''">
            and date_format(a.createtime,'%Y-%m-%d')>=${params.beginDate}
        </if>
        <if test="params.endDate!=null and params.endDate!=''">
        <![CDATA[    and date_format(a.createtime,'%Y-%m-%d')<=${params.endDate}  ]]>     
        </if>