Java代码里面使用solr

Solr里面导入了中文分词器  IKAnalyzer6.5.0.jar

新建一个Maven项目

项目结构

编写代码

（1）导入solr的pom依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.wjx</groupId>
    <artifactId>solr</artifactId>
    <version>1.0-SNAPSHOT</version>


    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.apache.solr/solr-solrj -->
        <!--solr的依赖-->
        <dependency>
            <groupId>org.apache.solr</groupId>
            <artifactId>solr-solrj</artifactId>
            <version>7.1.0</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        
    </dependencies>
</project>

（2）测试Solr类

包括新增，查询，根据Id查询，查询全部，高亮显示

package com.wjx;

import org.apache.solr.client.solrj.SolrQuery;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.impl.HttpSolrClient;
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.junit.Test;

import java.io.IOException;
import java.util.List;
import java.util.Map;

/**
 * @Description: solr测试类
 * @Auther: wjx
 * @Date: 2019/2/13 14:28
 */
public class SolrTest {

    /**
     * solr的java客户端
     */
    private HttpSolrClient solrClient;

    /**
     * 获取连接
     *
     * @return
     */
    private HttpSolrClient getSolrClient() {
        synchronized (this) {
            if (solrClient == null) {
                solrClient = new HttpSolrClient.Builder().withBaseSolrUrl("http://114.116.24.32:8080/solr/collection_1").build();
            }
        }
        return solrClient;
    }

    /**
     * 测试提交solr到服务器
     *
     * @throws IOException
     * @throws SolrServerException
     */
    @Test
    public void testAddDocument() throws IOException, SolrServerException {
        //获取solr的服务
        getSolrClient();

        for (int i = 0; i < 100; i++) {
            SolrInputDocument document = new SolrInputDocument();
            document.addField("id", i);
            document.addField("title_ik", "这是一部手机" + i);
            document.addField("content_ik", "手机描述" + i);
            solrClient.add(document);
        }
        //提交
        solrClient.commit();
        //关闭
        solrClient.close();
        System.out.println("提交成功...");
    }

    /**
     * 根据Id删除
     *
     * @throws IOException
     * @throws SolrServerException
     */
    @Test
    public void testDeleteId() throws IOException, SolrServerException {
        //获取solr的服务
        getSolrClient();
        solrClient.deleteById("200");
        solrClient.commit();
        solrClient.close();
    }

    /**
     * 删除所有
     *
     * @throws IOException
     * @throws SolrServerException
     */
    @Test
    public void testDeleteAll() throws IOException, SolrServerException {
        getSolrClient();
        solrClient.deleteByQuery("*:*");
        solrClient.commit();
        solrClient.close();
    }

    /**
     * 全部查询
     *
     * @throws IOException
     * @throws SolrServerException
     */
    @Test
    public void testAllQuery() throws IOException, SolrServerException {
        getSolrClient();
        //设置条件
        SolrQuery solrQuery = new SolrQuery();
        //查询的前100条记录
        solrQuery.setRows(100);
        //查询的条件
        solrQuery.setQuery("*:*");
        //查询返回的对象
        QueryResponse response = solrClient.query(solrQuery);
        //查询返回的集合
        SolrDocumentList results = response.getResults();
        for (SolrDocument document : results) {

            Object id = document.get("id");
            Object title_ik = document.get("title_ik");
            Object content_ik = document.get("content_ik");

            System.out.println("id:" + id + ",title_ik:" + title_ik + ",content_ik:" + content_ik);
        }
        solrClient.close();
    }


    /**
     * 分页查询
     *
     * @throws SolrServerException
     * @throws IOException
     */
    @Test
    public void testQueryByPage() throws SolrServerException, IOException {
        getSolrClient();
        // 以后参数都是通过这个对象去构造...
        SolrQuery solrQuery = new SolrQuery();
        //solrParams.setQuery("title_ik:手机");    注释掉，按照条件查询
        solrQuery.setQuery("*:*");
        //分页
        solrQuery.setStart(10);//当前查询起始页
        solrQuery.setRows(10);//每页显示多少条数据
        QueryResponse queryResponse = solrClient.query(solrQuery);

        // 返回结果，默认只返回10条记录
        SolrDocumentList documentList = queryResponse.getResults();
        for (SolrDocument solrDocument : documentList) {
            Object title_ik = solrDocument.get("title_ik");
            System.out.println(title_ik);
        }
    }

    /**
     * 高亮显示
     *
     * @throws IOException
     * @throws SolrServerException
     */
    @Test
    public void testHighlighting() throws IOException, SolrServerException {
        getSolrClient();
        // 以后参数都是通过这个对象去构造...
        SolrQuery solrQuery = new SolrQuery();
        solrQuery.setQuery("title_ik:手机");
        //分页
        solrQuery.setStart(0);//当前查询起始页
        solrQuery.setRows(10);//每页显示多少条数据
        //开启高亮
        solrQuery.setHighlight(true);
        //设置需要高亮显示的字段名
        solrQuery.setParam("hl.fl", "title_ik");
        //设置高亮前置显示
        solrQuery.setHighlightSimplePre("<span color='red'>");
        //设置高亮后缀显示
        solrQuery.setHighlightSimplePost("</span>");

        QueryResponse response = solrClient.query(solrQuery);
        SolrDocumentList documentList = response.getResults();
        Map<String, Map<String, List<String>>> highlightingMap = response.getHighlighting();
        for (SolrDocument document : documentList) {
            //id
            Object id = document.get("id");
            //根据Id查到高亮显示的结果
            Map<String, List<String>> stringList = highlightingMap.get(id);
            System.out.println(stringList);
        }
    }
}

高亮显示结果：