电商门户网站商品品类多级联动SpringBoot+Thymeleaf实现
在淘宝、京东等电商网站，其门户网站都有一个商品品类的多级联动，鼠标移动，就显示，因为前端不是我做的，所以不说明前端实现，只介绍后端实现。
搭建部署SpringBoot环境
配置文件配置：
开启了对Thymeleaf模块引擎的支持
server:
port: 8081
#logging:
# config: classpath:logback_spring.xml
# level:
# com.muses.taoshop: debug
# path: /data/logs
spring:
datasource:
# 主数据源
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
# 连接池设置
druid:
initial-size: 5
min-idle: 5
max-active: 20
# 配置获取连接等待超时的时间
max-wait: 60000
# 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
time-between-eviction-runs-millis: 60000
# 配置一个连接在池中最小生存的时间，单位是毫秒
min-evictable-idle-time-millis: 300000
# Oracle请使用select 1 from dual
validation-query: SELECT 'x'
test-while-idle: true
test-on-borrow: false
test-on-return: false
# 打开PSCache，并且指定每个连接上PSCache的大小
pool-prepared-statements: true
max-pool-prepared-statement-per-connection-size: 20
# 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
filters: stat,wall,slf4j
# 通过connectProperties属性来打开mergeSql功能；慢SQL记录
connection-properties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
# 合并多个DruidDataSource的监控数据
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启动类：
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启动配置类
* </pre>
* @author nicky
* @version 1.00.00
* <pre>
* 修改记录
* 修改后版本: 修改人： 修改日期: 修改内容:
* </pre>
*/
@Controller
@EnableScheduling//开启对计划任务的支持
@EnableTransactionManagement//开启对事务管理配置的支持
@EnableCaching
@EnableAsync//开启对异步方法的支持
@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);
}
}写个Controller类跳转到门户网站：
ps：品类多级联动思路其实就是先构建一个树，我这里的做法就是先查询处理，然后通过工具类，进行递归遍历，待会给出工具类代码，仅供参考。listCategory方法其实就是获取所有的品类信息
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>
* 门户网站控制类
* </pre>
*
* @author nicky
* @version 1.00.00
* <pre>
* 修改记录
* 修改后版本: 修改人： 修改日期: 修改内容:
* </pre>
*/
@Controller
@RequestMapping("/portal")
public class IndexController extends BaseController{
@Autowired
IItemService iItemService;
@Autowired
IItemBrankService iItemBrankService;
@Autowired
IItemCategoryService iItemCategoryService;
/**
* 跳转到门户网站
* @return
*/
@GetMapping(value = "/toIndex.do")
public ModelAndView toIndex(){
info("跳转到门户网站");
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;
}
}
业务接口类：
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>
* 商品品类信息接口
* </pre>
*
* @author nicky
* @version 1.00.00
* <pre>
* 修改记录
* 修改后版本: 修改人： 修改日期: 2018.06.17 10:59 修改内容:
* </pre>
*/
public interface IItemCategoryService {
/**
* 查询所有商品品类信息
* @return
*/
List<ItemCategory> listCategory();
业务服务实现类:
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>
* 商品品类信息服务实现类
* </pre>
*
* @author nicky
* @version 1.00.00
* <pre>
* 修改记录
* 修改后版本: 修改人： 修改日期: 2018.06.17 11:01 修改内容:
* </pre>
*/
@Service
public class ItemCategoryServiceImpl implements IItemCategoryService{
@Autowired
ItemCategoryMapper itemCategoryMapper;
/**
* 查询所有的商品品类信息
* @return
*/
@Override
public List<ItemCategory> listCategory() {
return itemCategoryMapper.listCategory();
}
}
Mybatis相关代码：
<?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>
<!-- 获取所有的商品品类信息-->
<select id="listCategory" resultType="ItemCategory">
SELECT
<include refid="BaseColumnList" />
FROM item_category t
</select>
</mapper>Mapper接口类：
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();
}实体类：
这里用了lombok的jar来实现，所有不用set和get方法
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>
* 商品品类
* </pre>
* @author nicky
* @version 1.00.00
* <pre>
* 修改记录
* 修改后版本: 修改人： 修改日期: 2018.06.09 21:49 修改内容:
* </pre>
*/
@Data
public class ItemCategory {
/**
* 商品品类id
*/
private Long id;
/**
* 商品品类名称
*/
private String categoryName;
/**
* 上级id
*/
private Long sjid;
/**
* 上次修改时间
*/
@JSONField(format ="yyyy-MM-dd HH:mm:ss")
private Date lastModifyTime;
/**
* 创建时间
*/
@JSONField(format ="yyyy-MM-dd HH:mm:ss")
private Date createTime;
/**
* 子菜单
*/
private List<ItemCategory> subCategorys;
}构建品类树的工具类：
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>
* 构造一棵品类树
* </pre>
*
* @author nicky
* @version 1.00.00
* <pre>
* 修改记录
* 修改后版本: 修改人： 修改日期: 2018.06.24 17:12 修改内容:
* </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()));//递归循环
list.add(category);
}
}
return list;
}
}
前端代码：
<div class="headerNav" xmlns:th="http://www.thymeleaf.org">
<div class="layout">
<dl class="all-brands">
<dt class="all-brands-head"> <a href="#">全部商品分类</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>实现的效果如图：可以说是3级联动
这是在开发中的开源项目的一个小功能，源码已经开源，github链接
版权声明：本文为mzq123原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。