1、遍歷map

package com.isuzu.vehicle.onroad.dal.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.isuzu.vehicle.onroad.dal.entity.VehicleOnroad;
import com.isuzu.vehicle.onroad.service.vo.VehicleOnroadVo;
import com.ne.ice.boot.common.entity.Page;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Result;
import org.apache.ibatis.annotations.Results;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.type.JdbcType;

import java.util.Date;
import java.util.List;
import java.util.Map;

/**
  * @author Yungui.Zheng
 */
public interface VehicleOnroadMapper  extends BaseMapper<VehicleOnroad>
{

    /**
     *  分頁查詢
     * @param page 分頁物件
     * @param conditionMap  條件map
     * @param order 排序
     * @return 分頁list
     */
    @Select("<script>"
            + " select   "
            +"  *  "
            + " FROM   "
            + "   tm_vehicle_onroad "
            +" <where> "
            +" <foreach collection=\"cond.keys\" item=\"wkey\" >"
            +"  <choose>  " +
            "        <when test=\"wkey =='vin'\">  " +//關鍵詞
            "           and vin like concat('%',#{cond[${wkey}]},'%')  " +
            "        </when>  " +
            "        <when test=\"wkey =='vinList'\">  " +//使用者vinList
            "           and vin in (\n" +
            "                <foreach collection=\"cond[wkey]\" item=\"item\" index=\"index\" separator=\",\">\n" +
            "                    #{item}\n" +
            "                </foreach>) " +
            "        </when>  " +
            "        <when test=\"wkey =='from'\">  " +//開始時間
            "           and create_time  >=#{cond[${wkey}]} " +
            "        </when>  " +
            "        <when test=\"wkey =='to'\">  " +//結束時間
            "           and create_time  <=#{cond[${wkey}]} " +
            "        </when>  " +
            "        <otherwise>  " +
            " 				<if test=\"cond[wkey]!= null\">and   ${wkey}= #{cond[${wkey}]}</if> " +
            "        </otherwise>  " +
            "    </choose>"+
            "</foreach>  "+
            " </where> "
            +" <if test=\"order!= null\"> ${order}</if> "
            + "</script>")
    List<VehicleOnroad> selectPageByMap(Page<VehicleOnroad> page, @Param("cond") Map<String, Object> conditionMap, @Param("order") String order) ;

}

　　2、二級迴圈OGNL表示式取值