mybatis遍历map参数查询

<select id="selectByPage" parameterType="java.util.Map" resultMap="BaseResultMap">
  SELECT
  <include refid="Base_Column_List" />
  FROM set_up_policy
  <trim prefix="WHERE" prefixOverrides="and|or">
    <if test="companys !=null and companys !=''">
      <foreach collection="companys" index="index" item="item" open="("
               separator="or" close=")">
        company like concat(concat('%',#{item}),'%')
      </foreach>
    </if >
    <if test="route_eliminate !=null and route_eliminate !=''">
      and route_eliminate=#{route_eliminate}
    </if >
    <if test="status !=null">
      and status=#{status}
    </if >
    <if test="issue_type !=null and issue_type !=''">
      and issue_type like concat(concat('%',#{issue_type}),'%')
    </if >
  </trim>
</select>