Solr之高亮显示-yellowcong

Solr高亮显示，通过高亮显示，来将重要的数据显示出来。高亮显示，在WEB的查询和检索中，会经常的用到，我们需要通过高亮的操作来显示关键字。操作的时候，将高亮的数据处理后，封装成对象后，再返回给调用者。

案例

通过SolrQuery 设定高亮的效果，设定高亮的效果可以是加红，或则是粗体等。

public static void highlight() throws Exception {
    SolrServer server = new HttpSolrServer(SOLR_PATH);

    SolrQuery solrQuery = new SolrQuery();
    solrQuery.add("q", "content：关系");

    // 开启高亮
    solrQuery.setHighlight(true);
    // 高亮显示的格式
    solrQuery.setHighlightSimplePre("<font color='red'>");
    solrQuery.setHighlightSimplePost("</font>");
    // 我需要那几个字段进行高亮
    solrQuery.setParam("hl.fl", "content");

    QueryResponse response = server.query(solrQuery);

    // 直接获取的反回结果
    SolrDocumentList docs = response.getResults();

    for (SolrDocument doc : docs) {
        String author = doc.get("author").toString();
        String content = doc.get("content").toString();
        System.out.println(author);
        System.out.println(content);
    }
    System.out.println("-------------------高亮显示效果---------------------------");
    // 高亮显示的反回结果
    Map<String, Map<String, List<String>>> maplist = response.getHighlighting();
    // 返回高亮之后的结果..
    for (SolrDocument solrDocument : docs) {
        Object id = solrDocument.get("id");
        Map<String, List<String>> fieldMap = maplist.get(id);
        List<String> stringlist = fieldMap.get("content");
        System.out.println(stringlist);
    }
}

运行结果

完整代码

package com.yellowcong.day12_05;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
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.impl.HttpSolrServer;
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;

/**
 *
 * 作者:yellowcong <br/>
 * 日期:2017/12/05 <br/>
 * 時間:14:33:28 <br/>
 * 描述:
 */
public class Demo {

    // solr的服务器地址
    private static final String SOLR_PATH = "http://192.168.66.100:8080/solr";

    public static void main(String[] args) throws Exception {

        //删除所有数据
        deleteAll();

        //添加索引
        index();

        //查询数据
        highlight();
    }


    /**
     * 作者:yellowcong <br/>
     * 日期:2017/12/05 <br/>
     * 時間:14:58:31 <br/>
     * 描述:添加索引
     * @throws Exception 
     * @throws SolrServerException 
     */
    public static void index() throws SolrServerException, Exception {

        SolrServer server = new HttpSolrServer(SOLR_PATH);

        SolrInputDocument doc1 = new SolrInputDocument();
        doc1.addField("id", "1");
        doc1.addField("author", "张三");
        doc1.addField("title", "Java");
        doc1.addField("content", "Java是xx");
        doc1.addField("add_date", new Date());


        SolrInputDocument doc2 = new SolrInputDocument();
        doc2.addField("id", "2");
        doc2.addField("author", "李四");
        doc2.addField("title", "Oralce");
        doc2.addField("content", "关系型数据库");
        doc2.addField("add_date", new Date());

        SolrInputDocument doc3 = new SolrInputDocument();
        doc3.addField("id", "3");
        doc3.addField("author", "王武");
        doc3.addField("title", "Mysql");
        doc3.addField("content", "老子也是关系型数据库");
        doc3.addField("add_date", new Date());

        SolrInputDocument doc4 = new SolrInputDocument();
        doc4.addField("id", "4");
        doc4.addField("author", "赵六");
        doc4.addField("title", "Redis");
        doc4.addField("content", "Nosql数据库");
        doc4.addField("add_date", new Date());

        SolrInputDocument doc5 = new SolrInputDocument();
        doc5.addField("id", "5");
        doc5.addField("author", "张三");
        doc5.addField("title", "Mongodb");
        doc5.addField("content", "Nosql数据库");
        doc5.addField("add_date", new Date());

        //添加文档
        // 集合添加多个的方式
        List<SolrInputDocument> docs = new ArrayList<SolrInputDocument>();
        docs.add(doc1);
        docs.add(doc2);
        docs.add(doc3);
        docs.add(doc4);
        docs.add(doc5);

        //添加数据到服务器
        server.add(docs);

        //提交事务
        server.commit();
        System.out.println("-------------------添加索引成功--------------------");
    }


    /**
     * 作者:yellowcong <br/>
     * 日期:2017/12/05 <br/>
     * 時間:14:48:59 <br/>
     * 描述:清空Solr里面的所有数据
     */
    public static void deleteAll() throws Exception {
        SolrServer server = new HttpSolrServer(SOLR_PATH);
        // 清空数据
        server.deleteByQuery("*:*");
        server.commit();
    }

    /**
     * 
     * 作者:yellowcong <br/>
     * 日期:2017/12/05 <br/>
     * 時間:14:47:27 <br/>
     * 描述:高亮显示
     */
    public static void highlight() throws Exception {
        SolrServer server = new HttpSolrServer(SOLR_PATH);

        SolrQuery solrQuery = new SolrQuery();
        solrQuery.add("q", "content：关系");

        // 开启高亮
        solrQuery.setHighlight(true);
        // 高亮显示的格式
        solrQuery.setHighlightSimplePre("<font color='red'>");
        solrQuery.setHighlightSimplePost("</font>");
        // 我需要那几个字段进行高亮
        solrQuery.setParam("hl.fl", "content");

        QueryResponse response = server.query(solrQuery);

        // 直接获取的反回结果
        SolrDocumentList docs = response.getResults();

        for (SolrDocument doc : docs) {
            String author = doc.get("author").toString();
            String content = doc.get("content").toString();
            System.out.println(author);
            System.out.println(content);
        }
        System.out.println("-------------------高亮显示效果---------------------------");
        // 高亮显示的反回结果
        Map<String, Map<String, List<String>>> maplist = response.getHighlighting();
        // 返回高亮之后的结果..
        for (SolrDocument solrDocument : docs) {
            Object id = solrDocument.get("id");
            Map<String, List<String>> fieldMap = maplist.get(id);
            List<String> stringlist = fieldMap.get("content");
            System.out.println(stringlist);
        }
    }
}