zoukankan      html  css  js  c++  java
  • shop--10.店铺列表(后台)

     分页读取与无限滚动

    多条件排列组合查询店铺信息

    dao层在查询店铺列表时,加上parentId不为空时,进行二级子列表的查询

    <select id="queryShopList" resultMap="shopMap">
            SELECT
            s.shop_id,
            s.shop_name,
            s.shop_desc,
            s.shop_addr,
            s.phone,
            s.shop_img,
            s.priority,
            s.create_time,
            s.last_edit_time,
            s.status,
            s.advice,
            a.area_id,
            a.area_name,
            sc.shop_category_id,
            sc.shop_category_name
            FROM
            shop s,
            area a,
            shop_category sc
            <where>
                <if test="shopCondition.shopCategory != null and
                shopCondition.shopCategory.shopCategoryId != null">
                    AND s.shop_category_id=#{shopCondition.shopCategory.shopCategoryId}
                </if>
                <if test="shopCondition.shopCategory != null
                and shopCondition.shopCategory.parent != null
                and shopCondition.shopCategory.parent.ShopCategoryId != null">
                    AND s.shop_category_id IN (
                    SELECT shop_category_id
                    FROM shop_category
                    WHERE parent_id=#{shopCondition.shopCategory.parent.shopCategoryId})
                </if>
                <if test="shopCondition.area != null and shopCondition.area.areaId != null">
                    AND s.area_id=#{shopCondition.area.areaId}
                </if>
                <if test="shopCondition.status != null">
                    AND s.status=#{shopCondition.status}
                </if>
                <if test="shopCondition.owner != null and shopCondition.owner.userId != null">
                    AND s.owner_id=#{shopCondition.owner.userId}
                </if>
                <if test="shopCondition.shopName != null">
                    AND s.shop_name LIKE '%${shopCondition.shopName}%'
                </if>
                AND
                s.area_id=a.area_id
                AND
                s.shop_category_id=sc.shop_category_id
            </where>
            ORDER BY
            s.priority DESC
            LIMIT #{rowIndex},#{pageSize};
        </select>
    
    
    
    
        <!--public int queryShopCount(@Param("shopCondition")Shop shopCondition);-->
        <select id="queryShopCount" resultType="int" parameterType="com.shop.bean.Shop">
            SELECT
            count(1),
            s.shop_id,
            s.shop_name,
            s.shop_desc,
            s.shop_addr,
            s.phone,
            s.shop_img,
            s.priority,
            s.create_time,
            s.last_edit_time,
            s.status,
            s.advice,
            a.area_id,
            a.area_name,
            sc.shop_category_id,
            sc.shop_category_name
            FROM
            shop s,
            area a,
            shop_category sc
            <where>
                <if test="shopCondition.shopCategory != null and
                shopCondition.shopCategory.shopCategoryId != null">
                    AND s.shop_category_id=#{shopCondition.shopCategory.shopCategoryId}
                </if>
                <if test="shopCondition.shopCategory != null
                and shopCondition.shopCategory.parent != null
                and shopCondition.shopCategory.parent.ShopCategoryId != null">
                    AND s.shop_category_id IN (
                    SELECT shop_category_id
                    FROM shop_category
                    WHERE parent_id=#{shopCondition.shopCategory.parent.shopCategoryId})
                </if>
                <if test="shopCondition.area != null and shopCondition.area.areaId != null">
                    AND s.area_id=#{shopCondition.area.areaId}
                </if>
                <if test="shopCondition.status != null">
                    AND s.status=#{shopCondition.status}
                </if>
                <if test="shopCondition.owner != null and shopCondition.owner.userId != null">
                    AND s.owner_id=#{shopCondition.owner.userId}
                </if>
                <if test="shopCondition.shopName != null">
                    AND s.shop_name LIKE '%${shopCondition.shopName}%'
                </if>
                AND
                s.area_id=a.area_id
                AND
                s.shop_category_id=sc.shop_category_id
            </where>
    

      

    service层不变

    controller层

    /**
         * 返回商品列表里的ShopCategory列表(一级或二级),以及区域信息列表
         * @param request
         * @return
         */
        @RequestMapping(value="/listshoppageinfo", method= RequestMethod.GET)
        @ResponseBody
        private Map<String, Object> listShopPageInfo(HttpServletRequest request){
            Map<String, Object> modelMap = new HashMap<>(  );
    
            //从前端获取parentId
            long parentId = HttpServletRequestUtil.getLong(request, "parentId");
    
            List<ShopCategory> shopCategoryList = null;
            //如果parentId不为null,则是点击某一个商品列表时进行的查询,则取出该parent级别下的二级shopCategory列表
            if(parentId != -1){
                try{
                    ShopCategory shopCategoryCondition = new ShopCategory();
                    ShopCategory parentShopCategory = new ShopCategory();
                    parentShopCategory.setShopCategoryId( parentId );
                    shopCategoryCondition.setParent( parentShopCategory );
                    shopCategoryList = shopCategoryService.getShopCategoryList( shopCategoryCondition );
                } catch (Exception e){
                    modelMap.put( "success", false );
                    modelMap.put( "errMsg", e.toString() );
                }
            } else{
                try{
                    //如果parentId不存在,则是点击全部商品时进行的查询,则取出所有商品类别的列表
                    shopCategoryList = shopCategoryService.getShopCategoryList( null );
                } catch (Exception e){
                    modelMap.put( "success", false );
                    modelMap.put( "errMsg", e.toString() );
                }
            }
            modelMap.put( "shopCategoryList", shopCategoryList );
    
    
            //获取区域列表信息
            List<Area> areaList = null;
            try{
                areaList = areaService.getAreaList();
                modelMap.put( "areaList", areaList );
            } catch(Exception e){
                modelMap.put( "success", false );
                modelMap.put( "errMsg", e.toString() );
            }
    
            modelMap.put( "success", true );
            return modelMap;
        }
    
    
        /**
         * 获取指定查询条件下的店铺信息
         * @param request
         * @return
         */
        @RequestMapping(value="/listshop", method=RequestMethod.GET)
        @ResponseBody
        private Map<String, Object> listShop(HttpServletRequest request){
            Map<String, Object> modelMap = new HashMap<>(  );
            //获取页码pageIndex
            int pageIndex = HttpServletRequestUtil.getInt( request, "pageIndex" );
            //获取一页需要的数据条数pageSize
            int pageSize = HttpServletRequestUtil.getInt( request, "pageSize" );
            //非空判断
            if(pageIndex > -1 && pageSize > -1){
                //试着获取一级类别Id
                long parentId = HttpServletRequestUtil.getLong( request, "parentId");
                //试着获取指定的二级类别Id
                long shopCategoryId = HttpServletRequestUtil.getLong( request, "shopCategoryId" );
                //试着获取区域Id
                int areaId = HttpServletRequestUtil.getInt( request, "areaId" );
                //试着获取模糊查询的名字
                String shopName = HttpServletRequestUtil.getString( request,  "shopName");
                //获取组合后的查询条件
                Shop shopCondition = compactShopConditionForSearch(parentId, shopCategoryId, areaId, shopName);
                //根据查询条件和分页信息获取店铺列表,并返回总数
                ShopExecution shopExecution = shopService.getShopList( shopCondition, pageIndex, pageSize );
    
                modelMap.put( "shopList", shopExecution.getShopList() );
                modelMap.put( "count", shopExecution.getCount() );
                modelMap.put( "success", true );
            } else{
                modelMap.put( "success", false );
                modelMap.put( "errMsg", "empty pageSize or pageIndex");
            }
            return modelMap;
        }
    
        /**
         * 组合查询条件,封装进shopCondition中
         * @param parentId
         * @param shopCategoryId
         * @param areaId
         * @param shopName
         * @return
         */
        private Shop compactShopConditionForSearch(long parentId, long shopCategoryId, int areaId, String shopName) {
            Shop shopCondition = new Shop();
            if(parentId != -1){
                //查询parentId下的二级店铺列表
                ShopCategory childCategory = new ShopCategory();
                ShopCategory parentCategory = new ShopCategory();
                parentCategory.setShopCategoryId( parentId );
                childCategory.setParent( parentCategory );
                shopCondition.setShopCategory( childCategory );
            }
    
            if(shopCategoryId != -1){
                //查询某个二级类别下的店铺列表
                ShopCategory shopCategory = new ShopCategory();
                shopCategory.setShopCategoryId( shopCategoryId );
                shopCondition.setShopCategory( shopCategory );
            }
    
            if(areaId != -1){
                //查询位于某个区域下的店铺列表
                Area area = new Area();
                area.setAreaId( areaId );
                shopCondition.setArea( area );
            }
    
            if(shopName != null){
                //模糊查询  查询店铺名中包含shopName的店铺列表
                shopCondition.setShopName( shopName );
            }
    
            //同时设置只展示status = 1 的店铺
            shopCondition.setStatus( 1 );
            return shopCondition;
        }
    

      

  • 相关阅读:
    vue系列---identify(生成图片验证码)插件
    vue中的锚链接跳转问题
    vue中怎样实现 路由拦截器
    Vue生命周期和考点
    Vue如何使用vue-area-linkage实现地址三级联动效果
    JS的Key-Val(键值对)设置Key为动态的方法
    web开发——在网页中引用字体包(.ttf),即嵌入特殊字体
    spring boot 实现多个 interceptor 并指定顺序
    BigDecimal加减乘除计算
    乐观锁解决并发问题
  • 原文地址:https://www.cnblogs.com/SkyeAngel/p/9025149.html
Copyright © 2011-2022 走看看