【学习笔记】Solr索引库的配置整理

Solr索引库可用作实现搜索功能，并发性能比MySQL更好。

Spring整合Solr

Spring配置：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
	http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
	http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd">

	<context:component-scan base-package="cn.xing"/>

	<bean id="httpSolrServer" class="org.apache.solr.client.solrj.impl.HttpSolrServer">
		<constructor-arg index="0" value="http://192.168.159.130:8080/solr"/>
	</bean>
</beans>

Java代码操作Solr索引库：

package cn.xing.test;

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.SolrServer;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.response.QueryResponse;
import org.apache.solr.common.SolrDocument;
import org.apache.solr.common.SolrDocumentList;
import org.apache.solr.common.SolrInputDocument;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import cn.xing.pojo.SearchItem;
import cn.xing.pojo.SearchResult;

/**
 * 操作solr索引库
 *
 * @author Xing
 *
 */
@Service
public class Operation {

	@Autowired
	private SolrServer solrServer;// 是配置的httpSolrServer

	/**
	 * 把所有商品导入索引库，商品对象SearchItem必须和solr配置的业务域字段、类型相同
	 */
	public void imprtSolrItem() {
		try {
			List<SearchItem> list = new ArrayList<SearchItem>();
			list.add(new SearchItem("1", "湖北", "黄鹤楼", 12, "image1", "省市"));
			list.add(new SearchItem("2", "河南", "开封", 12, "image2", "省市"));
			list.add(new SearchItem("3", "3", "3", 12, "image2", "222"));
			// 把list放入索引库
			for (SearchItem searchItem : list) {
				SolrInputDocument doc = new SolrInputDocument();
				doc.addField("id", searchItem.getId());
				doc.addField("item_title", searchItem.getTitle());
				doc.addField("item_sell_point", searchItem.getSell_point());
				doc.addField("item_price", searchItem.getPrice());
				doc.addField("item_image", searchItem.getImage());
				doc.addField("item_category_name", searchItem.getCategory_name());
				solrServer.add(doc);
			}
			solrServer.commit();
			System.out.println("数据导入成功");
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	// 根据查询条件SolrQuery,查询索引库
	public List<SearchItem> querySolr(SolrQuery query) throws SolrServerException {
		// 根据条件查询索引库
		QueryResponse queryResponse = solrServer.query(query);
		SolrDocumentList results = queryResponse.getResults();
		// 取出总记录数
		long num = results.getNumFound();
		System.out.println("查询结果的数据条数：" + num);
		// 取出商品列表,高亮关键词
		// Map<商品id,Map<商品属性字段,List<字段的值>>>
		Map<String, Map<String, List<String>>> highlighting = queryResponse.getHighlighting();
		List<SearchItem> itemList = new ArrayList<>();
		for (SolrDocument solrDocument : results) {
			SearchItem item = new SearchItem();
			item.setId((String) solrDocument.get("id"));
			item.setCategory_name((String) solrDocument.get("item_category_name"));
			item.setImage((String) solrDocument.get("item_image"));
			item.setPrice((long) solrDocument.get("item_price"));
			item.setSell_point((String) solrDocument.get("item_sell_point"));
			// 取高亮结果，商品标题
			List<String> list = highlighting.get(solrDocument.get("id")).get("item_title");
			if (list != null && list.size() > 0) {
				item.setTitle(list.get(0));// 拿到该商品标题
			} else {
				item.setTitle((String) solrDocument.get("item_title"));
			}
			itemList.add(item);
		}
		return itemList;
	}

	/**
	 * 根据关键词在solr索引库中搜索商品并分页。
	 */
	public SearchResult search(String keyword, int page, int rows) throws Exception {
		// 设置查询条件，调用querySolr()方法查询
		SolrQuery query = new SolrQuery();
		query.setQuery(keyword);// 设置查询条件
		if (page <= 0)
			page = 1;
		query.setStart((page - 1) * rows);// 设置分页索引
		query.setRows(rows);// 设置查询条数
		// 设置默认搜索域
		query.set("df", "item_title");
		// 设置高亮显示
		query.setHighlight(true);
		query.addHighlightField("item_title");
		query.setHighlightSimplePre("<em style=\"color:red\">");
		query.setHighlightSimplePost("</em>");
		// 执行查询
		List<SearchItem> itemList = this.querySolr(query);
		// 设置返回结果
		SearchResult rs = new SearchResult();
		rs.setItemList(itemList);
		/*
		 * // 设置总页数 int totalpages = rs.getRecourdCount() / rows; if
		 * (rs.getRecourdCount() % rows > 0) totalpages++; rs.setTotalPages((long)
		 * totalpages);
		 */
		return rs;
	}

}

 分页查询数据封装：

package cn.xing.pojo;

import java.io.Serializable;
import java.util.List;

/**
 * 搜素商品的结果。对页面需要的数据的封装。
 *
 * @author Xing
 *
 */
public class SearchResult implements Serializable {

	private Long totalPages;
	private Integer recourdCount;
	private List<SearchItem> itemList;
}

 Solr数据对应的pojo：

package cn.xing.pojo;

import java.io.Serializable;

import org.apache.commons.lang3.StringUtils;

public class SearchItem implements Serializable {
	@Override
	public String toString() {
		return "SearchItem [id=" + id + ", title=" + title + ", sell_point=" + sell_point + ", price=" + price
				+ ", image=" + image + ", category_name=" + category_name + "]";
	}

	// 类型和solr的中文分析器里的schema.xml中配置的type必须一样
	private String id;
	private String title;
	private String sell_point;
	private long price;
	private String image;
	private String category_name;

	// 搜索结果页面展示一张图片
	public String[] getImages() {
		String image2 = this.getImage();
		if (StringUtils.isNotBlank(image2)) {
			String[] imagesArr = image2.split(",");
			return imagesArr;
		}
		return null;

	}

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

}

Java测试代码：

package cn.xing.test;

import java.util.List;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import cn.xing.pojo.SearchItem;
import cn.xing.pojo.SearchResult;
public class test {
	public static void main(String[] args) throws Exception {
		ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
		Operation operation = ac.getBean(Operation.class);

		// 导入数据
		operation.imprtSolrItem();

//		SearchResult search = operation.search("明明就", 1, 1);
		SearchResult search = operation.search("3", 1, 10);
		List<SearchItem> itemList = search.getItemList();
		for (SearchItem searchItem : itemList) {
			System.out.println(searchItem);
		}
	}
}