• mybatis plus 联合查询


    在xml中只需要需要写如下的代码即可实现分页:

    <select id="selectUserList" parameterType="map" resultType="com.test.mybatisplus.pojo.User">
            SELECT
            <include refid="Base_Column_List" />
            FROM user
            WHERE name LIKE CONCAT("%",#{name},"%")
        </select>
    

     调用方法

    /**
         * 分页插件
         */
        public static void testPageListUser() {
            Page<User> page = new Page<User>(1,10);
    
            Map<String, Object> condition=new HashMap<String, Object>();
            condition.put("name", "测试");
            //String name="测试";
            List<User> lstUser = userDao.selectUserList(page,condition);
            for(User user:lstUser) {
                System.out.println(user);
            }
        }

    感谢此文章作者:https://blog.csdn.net/BtWangZhi/article/details/79098420

    贡献一波自己的代码

    1、调用:
            Page<CarView> page = new Page<CarView>(current, limit);
    
            List<CarView> pageList = baseMapper.queryCarPage(page, params);
        page.setRecords(pageList);
        return new PageUtils(page);
    或者
    //使用 com.github.pagehelper
    @Override
    public PageUtils queryPage(Map<String, Object> params) {

    int current = Integer.parseInt(params.get("page").toString());
    int size = Integer.parseInt(params.get("limit").toString());
    /* Page<Jt952inforEntity> page = new Page<>(current, size);
    page.setRecords(this.baseMapper.query952InfoList(page,params));
    return new PageUtils(page);
    */
    com.github.pagehelper.PageHelper.startPage(current, size);
    List<Jt952inforEntity> data = this.baseMapper.query952InfoList(params);
    com.github.pagehelper.Page<Jt952inforEntity> pageInfo = (com.github.pagehelper.Page<Jt952inforEntity>) data;

    PageUtils pageUtils = new PageUtils(data, (int) pageInfo.getTotal(), (int) pageInfo.getPageSize(), pageInfo.getPageNum());

    return pageUtils;
    }


     2、Dao

    /**
         * 查询数据分页
         *
         * @param page
         * @param params
         * @return
         */
        List<CarView> queryCarPage(Page<CarView> page, Map<String, Object> params);
      
      //这是使用 com.github.pagehelper xml代码一样的
      List<CarView> queryCarPage(@Param("params")Map<String, Object> params);

     3、xml 后面自己传递的传输参数配置就可以了

     <!--查询车辆数据分页-->
        <select id="queryCarPage" parameterType="map" resultType="io.sale.modules.sale.entity.dto.CarView">
        SELECT
        sl_car.id,sl_car.customer_id,sl_car.number,sl_car.type,sl_car.frame,sl_car.annual_time,sl_car.service_time,sl_car.driver_name,
        sl_car.owner_phone,sl_car.image,sl_car.ramark,sl_car.dept_id,sl_car.user_id,sl_car.add_time,sl_car.del_flag,sl_car.`change`,sl_car.add_user
        FROM sl_car , sl_sale   where sl_car.del_flag=0 GROUP BY sl_car.id
    
    </select>
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  • 原文地址:https://www.cnblogs.com/louby/p/9124071.html
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