在淘寶、京東等電商網站,其門戶網站都有一個商品品類的多級聯動,鼠標移動,就顯示,由於前端不是我作的,因此不說明前端實現,只介紹後端實現。html
搭建部署SpringBoot環境
配置文件配置:
開啓了對Thymeleaf模塊引擎的支持前端
server: port: 8081 #logging: # config: classpath:logback_spring.xml # level: # com.muses.taoshop: debug # path: /data/logs spring: datasource: # 主數據源 shop: url: jdbc:mysql://127.0.0.1:3306/taoshop?autoReconnect=true&useUnicode=true&characterEncoding=utf8&characterSetResults=utf8&useSSL=false username: root password: root driver-class-name: com.mysql.jdbc.Driver type: com.alibaba.druid.pool.DruidDataSource # 鏈接池設置 druid: initial-size: 5 min-idle: 5 max-active: 20 # 配置獲取鏈接等待超時的時間 max-wait: 60000 # 配置間隔多久才進行一次檢測,檢測須要關閉的空閒鏈接,單位是毫秒 time-between-eviction-runs-millis: 60000 # 配置一個鏈接在池中最小生存的時間,單位是毫秒 min-evictable-idle-time-millis: 300000 # Oracle請使用select 1 from dual validation-query: SELECT 'x' test-while-idle: true test-on-borrow: false test-on-return: false # 打開PSCache,而且指定每一個鏈接上PSCache的大小 pool-prepared-statements: true max-pool-prepared-statement-per-connection-size: 20 # 配置監控統計攔截的filters,去掉後監控界面sql沒法統計,'wall'用於防火牆 filters: stat,wall,slf4j # 經過connectProperties屬性來打開mergeSql功能;慢SQL記錄 connection-properties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000 # 合併多個DruidDataSource的監控數據 use-global-data-source-stat: true # jpa: # database: mysql # hibernate: # show_sql: true # format_sql: true # ddl-auto: none # naming: # physical-strategy: org.hibernate.boot.entity.naming.PhysicalNamingStrategyStandardImpl # mvc: # view: # prefix: /WEB-INF/jsp/ # suffix: .jsp #添加Thymeleaf配置 thymeleaf: cache: false prefix: classpath:/templates/ suffix: .html mode: HTML5 encoding: UTF-8 content-type: text/html #Jedis配置 # jedis : # pool : # host : 127.0.0.1 # port : 6379 # password : redispassword # timeout : 0 # config : # maxTotal : 100 # maxIdle : 10 # maxWaitMillis : 100000
SpringBoot啓動類:java
package com.muses.taoshop; import org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration; import org.springframework.boot.*; import org.springframework.boot.autoconfigure.*; import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration; import org.springframework.boot.autoconfigure.jdbc.DataSourceTransactionManagerAutoConfiguration; import org.springframework.boot.web.servlet.ServletComponentScan; import org.springframework.cache.annotation.EnableCaching; import org.springframework.scheduling.annotation.EnableAsync; import org.springframework.scheduling.annotation.EnableScheduling; import org.springframework.stereotype.*; import org.springframework.transaction.annotation.EnableTransactionManagement; import org.springframework.web.bind.annotation.*; /** * * <pre> * SpringBoot啓動配置類 * </pre> * @author nicky * @version 1.00.00 * <pre> * 修改記錄 * 修改後版本: 修改人: 修改日期: 修改內容: * </pre> */ @Controller @EnableScheduling//開啓對計劃任務的支持 @EnableTransactionManagement//開啓對事務管理配置的支持 @EnableCaching @EnableAsync//開啓對異步方法的支持 @EnableAutoConfiguration @ServletComponentScan @SpringBootApplication(exclude={DataSourceAutoConfiguration.class, MybatisAutoConfiguration.class, DataSourceTransactionManagerAutoConfiguration.class}) public class PortalApplication { @RequestMapping("/") @ResponseBody String home() { return "portal web!"; } @RequestMapping("/doTest") @ResponseBody String doTest(){ System.out.println(Thread.currentThread().getName()); String threadName = Thread.currentThread().getName(); return threadName; } public static void main(String[] args) throws Exception { SpringApplication.run(PortalApplication.class, args); } }
寫個Controller類跳轉到門戶網站:
ps:品類多級聯動思路其實就是先構建一個樹,我這裏的作法就是先查詢處理,而後經過工具類,進行遞歸遍歷,待會給出工具類代碼,僅供參考。listCategory方法其實就是獲取全部的品類信息mysql
package com.muses.taoshop.web.controller.portal; import com.alibaba.fastjson.JSON; import com.muses.taoshop.item.entity.ItemBrand; import com.muses.taoshop.item.entity.ItemCategory; import com.muses.taoshop.item.entity.ItemPortal; import com.muses.taoshop.item.service.IItemBrankService; import com.muses.taoshop.item.service.IItemCategoryService; import com.muses.taoshop.item.service.IItemService; import com.muses.taoshop.util.CategoryTreeUtils; import com.muses.taoshop.web.controller.BaseController; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.util.CollectionUtils; import org.springframework.web.bind.annotation.*; import org.springframework.web.servlet.ModelAndView; import java.util.Date; import java.util.List; /** * <pre> * 門戶網站控制類 * </pre> * * @author nicky * @version 1.00.00 * <pre> * 修改記錄 * 修改後版本: 修改人: 修改日期: 修改內容: * </pre> */ @Controller @RequestMapping("/portal") public class IndexController extends BaseController{ @Autowired IItemService iItemService; @Autowired IItemBrankService iItemBrankService; @Autowired IItemCategoryService iItemCategoryService; /** * 跳轉到門戶網站 * @return */ @GetMapping(value = "/toIndex.do") public ModelAndView toIndex(){ info("跳轉到門戶網站"); ModelAndView mv = this.getModelAndView(); mv.setViewName("index"); List<ItemPortal> items = iItemService.listItemPortal(); CategoryTreeUtils treeUtil = new CategoryTreeUtils(); List<ItemCategory> list = iItemCategoryService.listCategory(); List<ItemCategory> categories = treeUtil.buildCategoryTree(list); mv.addObject("items" , items); mv.addObject("categories" , categories); return mv; } @GetMapping(value = "/doTest") @ResponseBody public String doTest(){ List<ItemBrand> itemBrands = iItemBrankService.listItemBrand(); String str = JSON.toJSON(itemBrands).toString(); return str; } }
業務接口類:git
package com.muses.taoshop.item.service; import com.muses.taoshop.item.entity.ItemCategory; import com.muses.taoshop.item.entity.ItemList; import java.util.List; /** * <pre> * 商品品類信息接口 * </pre> * * @author nicky * @version 1.00.00 * <pre> * 修改記錄 * 修改後版本: 修改人: 修改日期: 2018.06.17 10:59 修改內容: * </pre> */ public interface IItemCategoryService { /** * 查詢全部商品品類信息 * @return */ List<ItemCategory> listCategory();
業務服務實現類:github
package com.muses.taoshop.item.service; import com.muses.taoshop.item.entity.ItemCategory; import com.muses.taoshop.item.entity.ItemList; import com.muses.taoshop.item.mapper.ItemCategoryMapper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; /** * <pre> * 商品品類信息服務實現類 * </pre> * * @author nicky * @version 1.00.00 * <pre> * 修改記錄 * 修改後版本: 修改人: 修改日期: 2018.06.17 11:01 修改內容: * </pre> */ @Service public class ItemCategoryServiceImpl implements IItemCategoryService{ @Autowired ItemCategoryMapper itemCategoryMapper; /** * 查詢全部的商品品類信息 * @return */ @Override public List<ItemCategory> listCategory() { return itemCategoryMapper.listCategory(); } }
Mybatis相關代碼:web
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" > <mapper namespace="com.muses.taoshop.item.mapper.ItemCategoryMapper" > <resultMap id="BaseResultMap" type="com.muses.taoshop.item.entity.ItemCategory" > <id column="id" property="id" jdbcType="BIGINT" /> <result column="category_name" property="categoryName" jdbcType="VARCHAR" /> <result column="sjid" property="sjid" jdbcType="BIGINT" /> <result column="last_modify_time" property="lastModifyTime" jdbcType="TIMESTAMP" /> <result column="create_time" property="createTime" jdbcType="TIMESTAMP" /> </resultMap> <sql id="BaseColumnList" > id, category_name as categoryName, sjid, last_modify_time as lastModifyTime, create_time as createTime </sql> <!-- 獲取全部的商品品類信息--> <select id="listCategory" resultType="ItemCategory"> SELECT <include refid="BaseColumnList" /> FROM item_category t </select> </mapper>
Mapper接口類:redis
package com.muses.taoshop.item.mapper; import com.muses.taoshop.item.entity.ItemCategory; import com.muses.taoshop.item.entity.ItemList; import org.apache.ibatis.annotations.Mapper; import org.apache.ibatis.annotations.Param; import java.util.List; @Mapper public interface ItemCategoryMapper { List<ItemCategory> listCategory(); }
實體類:
這裏用了lombok的jar來實現,全部不用set和get方法spring
package com.muses.taoshop.item.entity; import com.alibaba.fastjson.annotation.JSONField; import com.fasterxml.jackson.annotation.JsonFormat; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import lombok.Data; import org.springframework.format.annotation.DateTimeFormat; import javax.validation.constraints.NotNull; import java.util.Date; import java.util.List; /** * <pre> * 商品品類 * </pre> * @author nicky * @version 1.00.00 * <pre> * 修改記錄 * 修改後版本: 修改人: 修改日期: 2018.06.09 21:49 修改內容: * </pre> */ @Data public class ItemCategory { /** * 商品品類id */ private Long id; /** * 商品品類名稱 */ private String categoryName; /** * 上級id */ private Long sjid; /** * 上次修改時間 */ @JSONField(format ="yyyy-MM-dd HH:mm:ss") private Date lastModifyTime; /** * 建立時間 */ @JSONField(format ="yyyy-MM-dd HH:mm:ss") private Date createTime; /** * 子菜單 */ private List<ItemCategory> subCategorys; }
構建品類樹的工具類:sql
package com.muses.taoshop.util; import com.muses.taoshop.item.entity.ItemCategory; import javax.mail.FetchProfile; import java.util.ArrayList; import java.util.List; /** * <pre> * 構造一棵品類樹 * </pre> * * @author nicky * @version 1.00.00 * <pre> * 修改記錄 * 修改後版本: 修改人: 修改日期: 2018.06.24 17:12 修改內容: * </pre> */ public class CategoryTreeUtils { public List<ItemCategory> commonCategorys; public List<ItemCategory> list = new ArrayList<ItemCategory>(); public List<ItemCategory> buildCategoryTree(List<ItemCategory> categories ) { this.commonCategorys = categories; for (ItemCategory c : categories){ ItemCategory category = new ItemCategory(); if(c.getSjid() == 0){ category.setSjid(c.getSjid()); category.setId(c.getId()); category.setCategoryName(c.getCategoryName()); category.setSubCategorys(treeChild(c.getId())); list.add(category); } } return list; } public List<ItemCategory> treeChild(long id){ List<ItemCategory> list = new ArrayList<ItemCategory>(); for(ItemCategory c : commonCategorys){ ItemCategory category = new ItemCategory(); if(c.getSjid() == id){ category.setSjid(c.getSjid()); category.setId(c.getId()); category.setCategoryName(c.getCategoryName()); category.setSubCategorys(treeChild(c.getId()));//遞歸循環 list.add(category); } } return list; } }
前端代碼:
<div class="headerNav" xmlns:th="http://www.thymeleaf.org"> <div class="layout"> <dl class="all-brands"> <dt class="all-brands-head"> <a href="#">所有商品分類</a> </dt> <dd class="all-brands-list"> <div class="wrap" th:each="c : ${categories}"> <div class="all-sort-list"> <div class="item bo"> <h3> <a href="" th:text="${c.categoryName}"></a></h3> <div class="item-list clearfix"> <div class="close">x</div> <div class="subitem" th:each="s: ${c.subCategorys}"> <dl class="fore1"> <dt th:text="${s.categoryName}"><a th:href="@{'/portal/category/toCategoryList/'+${s.id}}"></a></dt> <dd> <em th:each="ss : ${s.subCategorys} "><a th:href="@{'/portal/category/toCategoryList/'+${ss.id}}" th:text="${ss.categoryName}"></a></em> </dd> </dl> </div> </div> </div> </div> </div> </dd> </dl> </div> </div> </div>
實現的效果如圖:能夠說是3級聯動
這是在開發中的開源項目的一個小功能,源碼已經開源,github連接