带查询条件的实现原理:
查询按钮被包在一个大表单，表单还有三个隐藏域，一个商品筛选，一个 价格，一个排序，每次点击查询时候清空三个隐藏域，就带着一个大条件去查询;点击下面的筛选条件时，给隐藏域的筛选条件赋值后带着大条件与筛选条件去查 询;筛选价格时候先给隐藏赋值，然后带着大条件，价格去查询，每次都要回显条件，即将用户输入的值回显到文本框。
SpringMVC.xml配置SolrServer
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"> <!-- 扫描基本包 @Controller @Service @Respostory --> <context:component-scan base-package="cn.qlq"/> <!-- 三大组件 --> <mvc:annotation-driven/> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> </bean> <!-- 配置SOlrJ --> <bean id="solrServer" class="org.apache.solr.client.solrj.impl.HttpSolrServer"> <constructor-arg value="http://localhost:8080/solr/collection1"/> </bean> </beans>
DAO
功能：接收service层传递过来的参数，根据参数查询索引库，返回查询结果。
返回值：一个商品列表List<ProductModel>。
package cn.qlq.jd.dao; import java.util.ArrayList; import java.util.List; import java.util.Map; import org.apache.solr.client.solrj.SolrQuery; import org.apache.solr.client.solrj.SolrQuery.ORDER; import org.apache.solr.client.solrj.SolrServer; import org.apache.solr.client.solrj.response.QueryResponse; import org.apache.solr.common.SolrDocument; import org.apache.solr.common.SolrDocumentList; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Repository; import cn.qlq.jd.pojo.ProductModel; @Repository public class JdDaoImpl implements JdDao { // 索引库 @Autowired private SolrServer solrServer; //// 通过上面四个条件查询对象商品结果集 public List<ProductModel> selectProductModelListByQuery(String queryString, String catalog_name, String price,String sort) throws Exception { // 查询 关键词 过滤条件 // 价格排序 分页 开始行 每页数 高亮 默认域 只查询指定域 SolrQuery solrQuery = new SolrQuery(); // 关键词 solrQuery.setQuery(queryString); // 过滤条件 if(null != catalog_name && !"".equals(catalog_name)){ solrQuery.set("fq", "product_catalog_name:" + catalog_name); } if(null != price && !"".equals(price)){ //0-9 50-* String[] p = price.split("-"); solrQuery.set("fq", "product_price:[" + p[0] + " TO " + p[1] + "]"); } // 价格排序 if("1".equals(sort)){ solrQuery.addSort("product_price", ORDER.desc); }else{ solrQuery.addSort("product_price", ORDER.asc); } // 分页 solrQuery.setStart(0); solrQuery.setRows(16); // 默认域 solrQuery.set("df", "product_keywords"); // 只查询指定域 solrQuery.set("fl", "id,product_name,product_price,product_picture"); // 高亮 // 打开开关 solrQuery.setHighlight(true); // 指定高亮域 solrQuery.addHighlightField("product_name"); // 前缀 solrQuery.setHighlightSimplePre("<span style='color:red'>"); solrQuery.setHighlightSimplePost("</span>"); // 后缀 // 执行查询 QueryResponse response = solrServer.query(solrQuery); // 文档结果集 SolrDocumentList docs = response.getResults(); Map<String, Map<String, List<String>>> highlighting = response.getHighlighting(); // Map K id V Map // Map K 域名 V List // List list.get(0) // 总条数 long numFound = docs.getNumFound(); List<ProductModel> productModels = new ArrayList<ProductModel>(); for (SolrDocument doc : docs) { ProductModel productModel = new ProductModel(); productModel.setPid((String) doc.get("id")); productModel.setPrice((Float) doc.get("product_price")); productModel.setPicture((String) doc.get("product_picture")); Map<String, List<String>> map = highlighting.get((String) doc.get("id")); List<String> list = map.get("product_name"); productModel.setName(list.get(0)); productModels.add(productModel); } return productModels; } }
Service
功能：调用dao层方法，查询商品列表。接收返回的商品列表和商品的总数量，根据每页显示的商品数量计算总页数。
参数：
1、查询条件：字符串
2、商品分类的过滤条件：商品的分类名称，字符串
3、商品价格区间：传递一个字符串，满足格式：“0-100、101-200、201-*”
4、排序条件：页面传递过来一个升序或者降序就可以，默认是价格排序。0：升序1：降序
5、分页信息：每页显示的记录条数创建一个常量60条。传递一个当前页码就可以了。
业务逻辑
1、根据参数创建查询对象
2、调用dao执行查询。
3、根据总记录数计算总页数。
package cn.qlq.jd.service; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import cn.qlq.jd.dao.JdDao; import cn.qlq.jd.pojo.ProductModel; @Service public class JdServiceImpl implements JdService { @Autowired private JdDao jdDao; //// 通过上面四个条件查询对象商品结果集 public List<ProductModel> selectProductModelListByQuery(String queryString, String catalog_name, String price,String sort) throws Exception { return jdDao.selectProductModelListByQuery(queryString, catalog_name, price, sort); } }
Controller
功能：接收页面传递过来的参数调用service查询商品列表。将查询结果返回给jsp页面，还需要查询参数的回显。
参数：
1、查询条件：字符串
2、商品分类的过滤条件：商品的分类名称，字符串
3、商品价格区间：传递一个字符串，满足格式：“0-100、101-200、201-*”
4、排序条件：页面传递过来一个升序或者降序就可以，默认是价格排序。0：升序1：降序
5、分页信息：每页显示的记录条数创建一个常量60条。传递一个当前页码就可以了。
6、Model：相当于request。
返回结果：String类型，就是一个jsp的名称。
package cn.qlq.jd.controller; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import cn.qlq.jd.pojo.ProductModel; import cn.qlq.jd.service.JdService; /** * 查询商品列表 * */ @Controller public class JdController { @Autowired private JdService jdService; // 商品列表 @RequestMapping(value = "list.action") public String list(String queryString, String catalog_name, String price, String sort, Model model) throws Exception { // 通过上面四个条件查询对象商品结果集 List<ProductModel> productModels = jdService.selectProductModelListByQuery(queryString, catalog_name, price, sort); model.addAttribute("productModels", productModels); // 查询条件回显 model.addAttribute("queryString", queryString); model.addAttribute("catalog_name", catalog_name); model.addAttribute("price", price); model.addAttribute("sort", sort); return "product_list"; } }
JSP页面
添加一隐藏域(包含一个文本输入框与查询按钮，也包括三个隐藏域，用于存放小的查询条件，点击下面的时候将值填充到隐藏域并提交表单去查询)然后执行大的查询条件清空隐藏域，执行小条件带着前面输过的条件去查询。
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> <%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %> <!DOCTYPE html> <!-- saved from url=(0047)http://list.jd.com/list.html?cat=1315,1343,1355 --> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <meta content="utf-8" http-equiv="charset"> <link rel="stylesheet" type="text/css" href="<c:url value='/resource'/>/base.css" media="all"> <link rel="stylesheet" type="text/css" href="<c:url value='/resource'/>/plist20131112.css" media="all"> <link rel="stylesheet" type="text/css" href="<c:url value='/resource'/>/list-page-20141009.css" media="all"> <link rel="stylesheet" type="text/css" href="<c:url value='/resource'/>/pop_compare.css" media="all"> <link rel="shortcut icon" type="image/ico" href="http://list.jd.com/favicon.ico"> <script type="text/javascript" src="<c:url value='/resource'/>/jquery-1.2.6.pack.js"></script> <style id="style-1-cropbar-clipper">/* Copyright 2014 Evernote Corporation. All rights reserved. */ .en-markup-crop-options { top: 18px !important; left: 50% !important; margin-left: -100px !important; width: 200px !important; border: 2px rgba(255,255,255,.38) solid !important; border-radius: 4px !important; } .en-markup-crop-options div div:first-of-type { margin-left: 0px !important; } </style> <script type="text/javascript"> function query() { //执行关键词查询时清空过滤条件 document.getElementById("catalog_name").value=""; document.getElementById("price").value=""; //执行查询 queryList(); } function queryList() { //提交表单 document.getElementById("actionForm").submit(); } function filter(key, value) { document.getElementById(key).value=value; //执行查询 queryList(); } function sort() { var s = document.getElementById("sort").value; if (s != "1") { s = "1"; } else { s = "0"; } document.getElementById("sort").value = s; //执行查询 queryList(); } </script> </head> <body class="root61"> <div id="shortcut-2013"> <div class="w"> <ul class="fl lh"> <li class="fore1 ld"><b></b><a href="#" rel="nofollow">收藏京东</a></li> </ul> <ul class="fr lh"> <li class="fore1" id="loginbar">您好，欢迎来到京东！<span><a href="#">[登录]</a> <a href="#" class="link-regist">[免费注册]</a></span></li> <li class="fore2 ld"> <s></s> <a href="#" rel="nofollow">我的订单</a> </li> <li class="fore2-1 ld" id="jd-vip"><i></i> <i></i> <s></s> <a target="_blank" rel="nofollow" href="http://vip.jd.com/">会员俱乐部</a> </li> <li class="fore2-2 ld" id="jd-dakehu"> <i></i><s></s> <a href="http://b.jd.com/" target="_blank" rel="nofollow">企业频道</a> </li> <li class="fore3 ld menu" id="app-jd" data-widget="dropdown" clstag="homepage|keycount|home2013|01d"><s></s> <i></i> <span class="outline"></span> <span class="blank"></span> <a href="http://app.jd.com/" target="_blank">手机京东</a> <b></b> </li> <li class="fore4 ld menu" id="biz-service" data-widget="dropdown"> <s></s> <span class="outline"></span> <span class="blank"></span> 客户服务 <b></b> </li> <li class="fore5 ld menu" id="site-nav" data-widget="dropdown"> <s></s> <span class="outline"></span> <span class="blank"></span> 网站导航 <b></b> </li> </ul> <span class="clr"></span> </div> </div><!--shortcut end--> <div id="o-header-2013"> <div class="w" id="header-2013"> <div id="logo-2013" class="ld"><a href="http://www.jd.com/" hidefocus="true"><b></b><img src="<c:url value='/resource'/>/logo-201305.png" width="270" height="60" alt="京东"></a></div> <!--logo end--> <div id="search-2013"> <div class="i-search ld"> <ul id="shelper" class="hide"></ul> <form id="actionForm" action="list.action" method="POST"> <div class="form"> <input type="text" class="text" accesskey="s" name="queryString" id="key" value="${queryString }" autocomplete="off" onkeydown="javascript:if(event.keyCode==13) {query()}"> <input type="button" value="搜索" class="button" onclick="query()"> </div> <input type="hidden" name="catalog_name" id="catalog_name" value="${catalog_name }"/> <input type="hidden" name="price" id="price" value="${price }"/> <input type="hidden" name="sort" id="sort" value="${sort }"/> </form> </div> <div id="hotwords"></div> </div> <!--search end--> <div id="my360buy-2013"> <dl> <dt class="ld"><s></s><a href="http://home.jd.com/">我的京东</a><b></b></dt> <dd> <div class="loading-style1"><b></b>加载中，请稍候...</div> </dd> </dl> </div> <!--my360buy end--> <div id="settleup-2013"> <dl> <dt class="ld"><s></s><span class="shopping"><span id="shopping-amount">0</span></span><a href="http://cart.jd.com/cart/cart.html" id="settleup-url">去购物车结算</a> <b></b> </dt> <dd> <div class="prompt"> <div class="loading-style1"><b></b>加载中，请稍候...</div> </div> </dd> </dl> </div> <!--settleup end--> </div> <!--header end--> <div class="w"> <div id="nav-2013"> <div id="categorys-2013" class="categorys-2014"> <div class="mt ld"> <h2><a href="http://www.jd.com/allSort.aspx">全部商品分类<b></b></a></h2> </div> </div> <div id="treasure"></div> <ul id="navitems-2013"> <li class="fore1" id="nav-home"><a href="http://www.jd.com/">首页</a></li> <li class="fore2" id="nav-fashion"><a href="http://fashion.jd.com/">服装城</a></li> <li class="fore3" id="nav-chaoshi"><a href="http://channel.jd.com/chaoshi.html">食品</a></li> <li class="fore4" id="nav-tuan"><a href="http://tuan.jd.com/" target="_blank">团购</a></li> <li class="fore5" id="nav-auction"><a href="http://auction.jd.com/">夺宝岛</a></li> <li class="fore6" id="nav-shan"><a href="http://red.jd.com/">闪购</a></li> <li class="fore7" id="nav-jinrong"><a href="http://jr.jd.com/" target="_blank">金融</a></li> </ul> </div> </div> </div> <div class="w"> <div class="breadcrumb"> <strong><a href="#">服饰内衣</a></strong><span> > <a href="#">女装</a> > <a href="#">T恤</a></span> </div> </div> <div class="w main"> <div class="right-extra"> <div id="select" clstag="thirdtype|keycount|thirdtype|select" class="m"> <div class="mt"> <h1> T恤 -<strong> 商品筛选</strong> </h1> </div> <div class="mc attrs"> <div data-id="100001" class="brand-attr"> <div class="attr"> <div class="a-key">商品类别：</div> <div class="a-values"> <div class="v-tabs"> <div class="tabcon"> <div> <a href="javascript:filter('catalog_name', '幽默杂货')" >幽默杂货</a> </div> <div> <a href="javascript:filter('catalog_name', '时尚卫浴')">时尚卫浴</a> </div> <div> <a href="javascript:filter('catalog_name', '另类文体')">另类文体</a> </div> <div> <a href="javascript:filter('catalog_name', '创意相架')">创意相架</a> </div> <div> <a href="javascript:filter('catalog_name', '巧妙收纳')">巧妙收纳</a> </div> <div> <a href="javascript:filter('catalog_name', '与钟不同')">与钟不同</a> </div> <div> <a href="javascript:filter('catalog_name', '个性男人')">个性男人</a> </div> <div> <a href="javascript:filter('catalog_name', '电脑周边')">电脑周边</a> </div> <div> <a href="javascript:filter('catalog_name', '品质家电')">品质家电</a> </div> <div> <a href="javascript:filter('catalog_name', '品味茶杯')">品味茶杯</a> </div> <div> <a href="javascript:filter('catalog_name', '四季用品')">四季用品</a> </div> <div> <a href="javascript:filter('catalog_name', '健康宝宝')">健康宝宝</a> </div> <div> <a href="javascript:filter('catalog_name', '新潮美容')">新潮美容</a> </div> <div> <a href="javascript:filter('catalog_name', '产品配件')">产品配件</a> </div> <div> <a href="javascript:filter('catalog_name', '雅致灯饰')">雅致灯饰</a> </div> <div> <a href="javascript:filter('catalog_name', '阳光车饰')">阳光车饰</a> </div> <div> <a href="javascript:filter('catalog_name', '趣味纸抽')">趣味纸抽</a> </div> <div> <a href="javascript:filter('catalog_name', '布艺毛绒')">布艺毛绒</a> </div> <div> <a href="javascript:filter('catalog_name', '益智手工')">益智手工</a> </div> <div> <a href="javascript:filter('catalog_name', '环保餐具')">环保餐具</a> </div> <div> <a href="javascript:filter('catalog_name', '闪亮匙扣')">闪亮匙扣</a> </div> <div> <a href="javascript:filter('catalog_name', '手机饰品')">手机饰品</a> </div> <div> <a href="javascript:filter('catalog_name', '精品数码')">精品数码</a> </div> <div> <a href="javascript:filter('catalog_name', '理财钱罐')">理财钱罐</a> </div> <div> <a href="javascript:filter('catalog_name', '美味厨房')">美味厨房</a> </div> <div> <a href="javascript:filter('catalog_name', '保健按摩')">保健按摩</a> </div> <div> <a href="javascript:filter('catalog_name', '魅力女人')">魅力女人</a> </div> </div> </div> </div> </div> </div> <div data-id="100002" class="prop-attrs"> <div class="attr"> <div class="a-key">价格：</div> <div class="a-values"> <div class="v-fold"> <ul class="f-list"> <li><a href="javascript:filter('price','0-9')">0-9</a></li> <li><a href="javascript:filter('price','10-19')">10-19</a></li> <li><a href="javascript:filter('price','20-29')">20-29</a></li> <li><a href="javascript:filter('price','30-39')">30-39</a></li> <li><a href="javascript:filter('price','40-49')">40-49</a></li> <li><a href="javascript:filter('price','50-*')">50以上</a></li> </ul> </div> </div> </div> </div> </div> </div> <div id="filter"> <div class="cls"></div> <div class="fore1"> <dl class="order"> <dt>排序：</dt> <dd> <a href="javascript:sort()">价格</a><b></b> </dd> </dl> <dl class="activity"> <dd></dd> </dl> <div class="pagin pagin-m"> <span class="text"><i>1</i>/200</span> <a href="javascript:;" class="prev">上一页<b></b></a> <a href="javascript:;" class="next">下一页<b></b></a> </div> <div class="total"> <span>共<strong>2000</strong>个商品 </span> </div> <span class="clr"></span> </div> </div> <!--商品列表开始--> <div id="plist" class="m plist-n7 plist-n8 prebuy"> <ul class="list-h"> <c:forEach var="item" items="${productModels }"> <li pid="${item.pid }"> <div class="lh-wrap"> <div class="p-img"> <a target="_blank" href="#"> <img width="220" height="282" class="err-product" src="<c:url value='/images'/>/${item.picture}"> </a> </div> <div class="p-name"> <a target="_blank" href="#">${item.name }</a> </div> <div class="p-price"> <strong>￥<fmt:formatNumber value="${item.price}" maxFractionDigits="2"/></strong><span id="p1269191543"></span> </div> </div> </li> </c:forEach> </ul> </div> <!--商品列表结束--> </div> <div class="left"> <div id="sortlist" clstag="thirdtype|keycount|thirdtype|sortlist" class="m"> <div class="mt"> <h2>服饰内衣</h2> </div> <div class="mc"> <div class="item current"> <h3> <b></b>女装 </h3> <ul> <li><a href="http://list.jd.com/1315-1343-1355.html">T恤</a></li> <li><a href="http://list.jd.com/1315-1343-1354.html">衬衫</a></li> <li><a href="http://list.jd.com/1315-1343-1356.html">针织衫</a></li> <li><a href="http://list.jd.com/1315-1343-9713.html">雪纺衫</a></li> <li><a href="http://list.jd.com/1315-1343-9710.html">卫衣</a></li> <li><a href="http://list.jd.com/1315-1343-9714.html">马甲</a></li> <li><a href="http://list.jd.com/1315-1343-9719.html">连衣裙</a></li> <li><a href="http://list.jd.com/1315-1343-9720.html">半身裙</a></li> <li><a href="http://list.jd.com/1315-1343-9715.html">牛仔裤</a></li> <li><a href="http://list.jd.com/1315-1343-9717.html">休闲裤</a></li> <li><a href="http://list.jd.com/1315-1343-9716.html">打底裤</a></li> <li><a href="http://list.jd.com/1315-1343-9718.html">正装裤</a></li> <li><a href="http://list.jd.com/1315-1343-9711.html">小西装</a></li> <li><a href="http://list.jd.com/1315-1343-9712.html">短外套</a></li> <li><a href="http://list.jd.com/1315-1343-9708.html">风衣</a></li> <li><a href="http://list.jd.com/1315-1343-9706.html">毛呢大衣</a></li> <li><a href="http://list.jd.com/1315-1343-9707.html">真皮皮衣</a></li> <li><a href="http://list.jd.com/1315-1343-9705.html">棉服</a></li> <li><a href="http://list.jd.com/1315-1343-3983.html">羽绒服</a></li> <li><a href="http://list.jd.com/1315-1343-9722.html">大码女装</a></li> <li><a href="http://list.jd.com/1315-1343-9721.html">中老年女装</a></li> <li><a href="http://list.jd.com/1315-1343-9723.html">婚纱</a></li> <li><a href="http://list.jd.com/1315-1343-11985.html">打底衫</a></li> <li><a href="http://list.jd.com/1315-1343-11986.html">旗袍/唐装</a></li> <li><a href="http://list.jd.com/1315-1343-11987.html">加绒裤</a></li> <li><a href="http://list.jd.com/1315-1343-11988.html">吊带/背心</a></li> <li><a href="http://list.jd.com/1315-1343-11989.html">羊绒衫</a></li> <li><a href="http://list.jd.com/1315-1343-11991.html">短裤</a></li> <li><a href="http://list.jd.com/1315-1343-11993.html">皮草</a></li> <li><a href="http://list.jd.com/1315-1343-11996.html">礼服</a></li> 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测试:
补充:如果索引和应用部署在同一个服务器可以使用EmbeddedSolrServer 不走http
EmbeddedSolrServer 提供了在 java 程序中直接调用 solr api 的方式，这种方式不走 http，通常来说性能会比 http 方式好 0.5 倍，当这种是通过将 solr 嵌入应用程序中来使用。可以通过以下方式生成一个 EmbeddedSolrServer
System.setProperty(“solr.solr.home”, “/home/shalinsmangar/work/oss/branch-1.3/example/solr”); CoreContainer.Initializer initializer = new CoreContainer.Initializer(); CoreContainer coreContainer = initializer.initialize(); EmbeddedSolrServer server = new EmbeddedSolrServer(coreContainer, "collectionName");
其查询方式与 HttpSolrServer 查询方式一样。
【当你用心写完每一篇博客之后,你会发现它比你用代码实现功能更有成就感!】
