mybtais xml文件中单个where参数问题

<!--查询的where条件-->
    <sql id="SelectSQL" >
      <where>
          <if test="id != null">
              and id = ${id}
          </if>
          <if test="userMobile != null">
              and user_mobile = #{userMobile}
          </if>
          <if test="startProvinceId != null">
              and start_province_id = #{startProvinceId}
          </if>
          <if test="startCityId != null">
              and start_city_id = #{startCityId}
          </if>
          <if test="startCountyId != null ">
              and start_country_id = #{startCountyId}
          </if>
          <if test="startStation != null">
              and start_station = #{startStation}
          </if>
          <if test="endProvinceId != null">
              and end_province_id = #{endProvinceId}
          </if>
          <if test="endCityId != null">
              and end_city_id = #{endCityId}
          </if>
          <if test="endStation != null ">
              and end_station = #{endStation}
          </if>
          <if test="endCountyId != null">
              and end_county_id = #{endCountyId}
          </if>
          <if test="sendDate != null">
              and send_date = #{sendDate}
          </if>
          <if test="startTime != null">
              and start_time = #{startTime}
          </if>
          <if test="endTime != null ">
              and end_time = #{endTime}
          </if>
          <if test="status != null">
              and status = #{status}
          </if>
          <if test="lineId != null">
              and line_id = #{lineId}
          </if>
          <if test="createTime != null">
              and create_time = #{createTime}
          </if>
          <if test="updateTime != null">
              and update_time = #{updateTime}
          </if>
          <if test="delFlag != null" >
              and delflag = #{delFlag}
          </if>
          <if test="spare1 != null ">
              and spare1 = #{spare1}
          </if>
          <if test="spare2 != null ">
              and spare2 = #{spare2}
          </if>
          <if test="spare3 != null ">
              and spare3 = #{spare3}
          </if>
          <if test="spare4 != null ">
              and spare4 = #{spare4}
          </if>
          <if test="spare5 != null ">
              and spare5 = #{spare5}
          </if>
          <if test="spare6 != null ">
              and spare6 = #{spare6}
          </if>
          <if test="spare7 != null ">
              and spare7 = #{spare7}
          </if>
          <if test="spare8 != null ">
              and spare8 = #{spare8}
          </if>
          <if test="spare9 != null ">
              and spare9 = #{spare9}
          </if>
          <if test="spare10 != null ">
              and spare10 = #{spare10}
          </if>
      </where>