15.首页查询一级分类商品列出左侧分类信息

来源：互联网发布：超人预算软件编辑：程序博客网时间：2024/04/28 06:54

首页上点击一级分类跳转到商品列表页面，左侧显示一级分类与二级分类信息。

1、在menu.jsp上添加action，传递一级分类cid。

<li><a href="${pageContext.request.contextPath }/product_findByCid?cid=<s:property value="#c.cid"/>"><s:property value="#c.cname"/></a>|</li>

2、创建二级分类的包及类

* cn.itcast.shop.categorysecond

* action

* CategoryAction

* service

* CategoryService

* dao

* CategoryDao

* vo

* CategorySecond

* CategorySecond.hbm.xml

3、配置一级分类和二级分类的关联关系

CategorySecond.hbm.xml

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE hibernate-mapping PUBLIC     "-//Hibernate/Hibernate Mapping DTD 3.0//EN"    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"><hibernate-mapping><class name="cn.xdy.shop.categorySecond.vo.CategorySecond" table="categorysecond"><id name="csid"><generator class="native"/></id><property name="csname"/><many-to-one name="category" class="cn.xdy.shop.category.vo.Category" column="cid"/></class></hibernate-mapping>

CategorySecond.java

package cn.xdy.shop.categorySecond.vo;import cn.xdy.shop.category.vo.Category;public class CategorySecond {private String csid;private String csname;private Category category;public String getCsid() {return csid;}public void setCsid(String csid) {this.csid = csid;}public String getCsname() {return csname;}public void setCsname(String csname) {this.csname = csname;}public Category getCategory() {return category;}public void setCategory(Category category) {this.category = category;}}

Category.hbm.xml中加入CategorySecond的信息

<set name="categorySeconds" lazy="false" order-by="cid"><key column="cid"/><one-to-many class="cn.xdy.shop.categorySecond.vo.CategorySecond"/></set>

Category.java中加入二级分类信息

private Set<CategorySecond> categorySeconds = new HashSet<CategorySecond>();public Set<CategorySecond> getCategorySeconds() {return categorySeconds;}public void setCategorySeconds(Set<CategorySecond> categorySeconds) {this.categorySeconds = categorySeconds;}

4、编写Action中方法findByCid，因session中有分类信息，所以页面上直接从session中取即可。

/** * 根据分类ID查询所有 * @return */public String findByCid(){//因为IndexAction中查询了一级分类存入session中，所以此处不再查询，页面上直接从session中取即可。return "findByCid";}

5、Struts.xml中配置findByCid

<!-- 商品action -->    <action name="product_*" class="productAction" method="{1}">    <result name="findByPid">/WEB-INF/jsp/product.jsp</result>    <result name="findByCid">/WEB-INF/jsp/productList.jsp</result>    </action>

6、编写productList.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@ taglib uri="/struts-tags" prefix="s"%><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><!-- saved from url=(0048)http://localhost:8080/mango/product/list/1.jhtml --><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>星辰网上商城</title><link href="${pageContext.request.contextPath}/css/common.css" rel="stylesheet" type="text/css"/><link href="${pageContext.request.contextPath}/css/product.css" rel="stylesheet" type="text/css"/></head><body><div class="container header"><div class="span5"><div class="logo"><a href="http://localhost:8080/mango/"><img src="${pageContext.request.contextPath}/image/r___________renleipic_01/logo.gif" alt="星辰商城"></a></div></div><div class="span9"><div class="headerAd"><img src="${pageContext.request.contextPath}/image/header.jpg" width="320" height="50" alt="正品保障" title="正品保障"></div></div><%@include file="menu.jsp" %></div><div class="container productList"><div class="span6"><div class="hotProductCategory"><s:iterator var="c" value="#session.cList"><dl><dt><a href="${pageContext.request.contextPath}/image/蔬菜 - Powered By Mango Team.htm"><s:property value="#c.cname"/></a></dt><s:iterator var="cs" value="#c.categorySeconds"><dd><a ><s:property value="#cs.csname"/></a></dd></s:iterator></dl></s:iterator></div></div><div class="span18 last"><form id="productForm" action="${pageContext.request.contextPath}/image/蔬菜 - Powered By Mango Team.htm" method="get"><input type="hidden" id="brandId" name="brandId" value=""><input type="hidden" id="promotionId" name="promotionId" value=""><input type="hidden" id="orderType" name="orderType" value=""><input type="hidden" id="pageNumber" name="pageNumber" value="1"><input type="hidden" id="pageSize" name="pageSize" value="20"><div id="result" class="result table clearfix"><ul><li><a href="./京华商城分页面.htm"><img src="${pageContext.request.contextPath}/image/4a51167a-89d5-4710-aca2-7c76edc355b8-thumbnail.jpg" width="170" height="170"  style="display: inline-block;">   <span style='color:green'> 大冬瓜</span> <span class="price">商城价： ￥4.78/份</span> </a></li><li><a ><img src="${pageContext.request.contextPath}/image/0ff130db-0a1b-4b8d-a918-ed9016317009-thumbnail.jpg" width="170" height="170" " style="display: inline-block;"><span style='color:green'>   圆白菜</span><span class="price">商城价： ￥1.78/份</span> </a></li><li><a ><img src="${pageContext.request.contextPath}/image/f5e39c37-94b2-462e-8e58-8bde3c5f1b8c-thumbnail.jpg" width="170" height="170"   style="display: inline-block;"><span style='color:green'>   甜玉米</span><span class="price">商城价： ￥4.48/份</span> </a></li><li><a ><img src="${pageContext.request.contextPath}/image/f37ba36a-181b-4161-a88f-f74c9adb485d-thumbnail.jpg" width="170" height="170"   style="display: inline-block;"><span style='color:green'>   胡萝卜</span><span class="price">商城价： ￥1.58/份</span> </a></li><li><a ><img src="${pageContext.request.contextPath}/image/93b9e55f-cbae-4c3c-b2f7-2636c7369db7-thumbnail.jpg" width="170" height="170"  style="display: inline-block;"><span style='color:green'>   芹菜</span><span class="price">商城价： ￥2.18/份</span> </a></li><li><a ><img src="${pageContext.request.contextPath}/image/51afeef5-f6cb-4936-abea-315cfca0edc0-thumbnail.jpg" width="170" height="170"  style="display: inline-block;"><span style='color:green'>   小西红柿</span><span class="price">商城价： ￥6.98/份</span> </a></li><li><a><img src="${pageContext.request.contextPath}/image/059b5245-e3c8-43bf-80fe-700f0e4e68b8-thumbnail.jpg" width="170" height="170"  style="display: inline-block;"><span style='color:green'>   白萝卜</span><span class="price">商城价： ￥3.98/份</span> </a></li><li><a ><img src="${pageContext.request.contextPath}/image/750a9ce8-8c19-444d-b8cc-f3e7e786ec5d-thumbnail.jpg" width="170" height="170"  style="display: inline-block;"><span style='color:green'>   菠菜</span><span class="price">商城价： ￥3.48/份</span> </a></li><li><a ><img src="${pageContext.request.contextPath}/image/bigPic372e7faa-3ad0-444d-a89b-a8e9f0d6e929.jpg" width="170" height="170"  ><span style='color:green'>   香菜</span><span class="price">商城价： ￥2.98/份</span> </a></li><li><a ><img src="${pageContext.request.contextPath}/image/bigPica7e5d3dd-5984-4d0f-9851-35cc0987d9b9.jpg" width="170" height="170" ><span style='color:green'>   白菜花</span><span class="price">商城价： ￥5.38/份</span> </a></li><li><a ><img src="${pageContext.request.contextPath}/image/bigPica5720219-ba48-460a-a084-24d5b314bd03.jpg" width="170" height="170"  ><span style='color:green'>   韭菜</span><span class="price">商城价： ￥2.38/份</span> </a></li><li><a ><img src="${pageContext.request.contextPath}/image/bigPicaa443d05-27b4-4964-958e-c81536f01d04.jpg" width="170" height="170"  ><span style='color:green'>   土豆</span><span class="price">商城价： ￥2.48/份</span> </a></li><li><a ><img src="${pageContext.request.contextPath}/image/bigPicc1e3a29e-17f5-4d9f-a186-b2c5a0b39b88.jpg" width="170" height="170" ><span style='color:green'>   黄瓜</span><span class="price">商城价： ￥2.58/份</span> </a></li><li><a ><img src="${pageContext.request.contextPath}/image/bigPicd0459632-fe4e-4a5d-8373-1a67c9f43ec2.jpg" width="170" height="170" ><span style='color:green'>   西红柿</span><span class="price">商城价： ￥2.58/份</span> </a></li><li><a ><img src="${pageContext.request.contextPath}/image/bigPice7c2e240-4147-4c11-b369-db3765ec3df9.jpg" width="170" height="170"  ><span style='color:green'>   大白菜</span><span class="price">商城价： ￥8.78/份</span> </a></li><li><a ><img src="${pageContext.request.contextPath}/image/54890cf9-91b0-40bc-9f68-51462e9c43a8.jpg" width="170" height="170"  ><span style='color:green'>   紫甘蓝</span><span class="price">商城价： ￥5.98/份</span>  </a></li><li class="last"><a ><img src="${pageContext.request.contextPath}/image/bigPic4ed6edbf-fb3e-49a7-be5e-361b2ce02961.jpg" width="170" height="170" ><span style='color:green'>   荷兰豆</span><span class="price">商城价： ￥9.28/份</span>  </a></li><li class="last"><a ><img src="${pageContext.request.contextPath}/image/bigPic5ab54f67-a479-48fe-a41d-7d34b57036a3.jpg" width="170" height="170" ><span style='color:green'>   尖椒</span><span class="price">商城价： ￥2.48/份</span> </a></li><li class="last"><a ><img src="${pageContext.request.contextPath}/image/bigPic13867cc1-935a-4a3a-98f9-edf87ddb1c09.jpg" width="170" height="170" ><span style='color:green'>   小香葱</span><span class="price">商城价： ￥2.98/份</span> </a></li><li class="last"><a ><img src="${pageContext.request.contextPath}/image/bigPicee0785e3-68e2-4e23-93ef-68904bc2a3c6.jpg" width="170" height="170" ><span style='color:green'>  圆茄子</span><span class="price">商城价： ￥1.58/份</span> </a></li></ul></div><div class="pagination"><span class="firstPage"> </span><span class="previousPage"> </span><span class="currentPage">1</span><a href="javascript: $.pageSkip(2);">2</a><a class="nextPage" 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