Solr搜索引擎之利用SolrJ调用服务端

Solr的服务器环境:

1) apache-tomcat-8.5.32-windows-x86.zip

2) solr-5.5.0.zip

3) jdk-7u80-windows-i586.exe

引入SolrJ的依赖包:

在加上一个commons-logging-1.1.1.jar的日志依赖包

链接：https://pan.baidu.com/s/1RygDMgbaAV1mKyxq0QPA5w   提取码：njor

例1: 向solr的索引库中添加索引文档

测试代码:

package cn.tx.demo;

import org.apache.solr.client.solrj.impl.HttpSolrClient;
import org.apache.solr.common.SolrInputDocument;
import org.junit.Before;
import org.junit.Test;

public class SolrJDemo {

    @Before
    public void setUp() throws Exception {
    }

    /**
     * 向solr索引库中添加索引文档
     */
    @Test
    public void addDoc() {
        //创建solr的客户端对象
        HttpSolrClient client = new HttpSolrClient("http://localhost:8080/solr/core");
        //创建一个solr的文档对象
        SolrInputDocument sd = new SolrInputDocument();
        sd.addField("id", "c0001");
        sd.addField("product_name", "Solr学习");
        sd.addField("product_catalog_name", "IT技术");
        sd.addField("product_description", "SolrJ是访问Java服务的Solr客户端");
        sd.addField("product_price", 299);
        sd.addField("product_picture", "xxx.jpg");
        
        try {
            //把文档加入服务器
            client.add(sd);
            //提交
            client.commit();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

结果:

例2: 删除文档

测试代码:

/**
     * 根据id删除文档
     */
    @Test
    public void delDocById() throws Exception {
        HttpSolrClient client = new HttpSolrClient("http://localhost:8080/solr/core");
        client.deleteById("c0001");
        client.commit();
    }
    
    /**
     * 根据查询条件删除文档
     */
    @Test
    public void delDocByQuery() throws Exception {
        HttpSolrClient client = new HttpSolrClient("http://localhost:8080/solr/core");
        client.deleteByQuery("product_name:青蛙");
        client.commit();
    }

例3: 文档查询

测试代码:

    /**
     * 查询文档
     */
    @Test
    public void queryDoc() throws Exception {
        HttpSolrClient client = new HttpSolrClient("http://localhost:8080/solr/core");
        //创建文档查询对象
        SolrQuery sq = new SolrQuery();
        //设置查询条件
        sq.set("q", "product_name:浪漫樱花");
        //设置过滤条件
        sq.set("fq", "product_price:[50 TO 100]");
        //设置排序
        sq.addSort("product_price", ORDER.asc);
        
        //设置分页查询条件
        //设置开始行号
        sq.setStart(0);
        //设置每页记录数
        sq.setRows(10);
        
        QueryResponse query = client.query(sq);
        SolrDocumentList results = query.getResults();
        long numFound = results.getNumFound();
        System.out.println("记录数: "+numFound);
        
        //遍历
        for(SolrDocument sd: results){
            String id = (String) sd.getFieldValue("id");
            String product_name = (String) sd.getFieldValue("product_name");
            String product_catalog_name = (String)                         sd.getFieldValue("product_catalog_name");
            String product_description = (String) sd.getFieldValue("product_description");
            String product_picture = (String) sd.getFieldValue("product_picture");
            Double product_price = (Double) sd.getFieldValue("product_price");
            System.out.println("------------------------");
            System.out.println("商品id: "+id);
            System.out.println("商品名称: "+product_name);
            System.out.println("商品品牌: "+product_catalog_name);
            System.out.println("商品图片: "+product_picture);
            System.out.println("商品单价: "+product_price);
        }
    }

例4: 高亮查询

高亮的结构如下图:

测试代码:

/**
     * 高亮查询
     */
    @Test
    public void queryHLDoc() throws Exception {
        HttpSolrClient client = new HttpSolrClient("http://localhost:8080/solr/core");
        //创建文档查询对象
        SolrQuery sq = new SolrQuery();
        //设置查询条件
        sq.set("q", "product_name:时尚 AND product_catalog_name:时尚");
        
        //开启高亮
        sq.setHighlight(true);
        sq.addHighlightField("product_name");
        sq.addHighlightField("product_catalog_name");
        sq.setHighlightSimplePre("<b>");
        sq.setHighlightSimplePost("</b>");
        
        QueryResponse query = client.query(sq);
        SolrDocumentList results = query.getResults();
        long numFound = results.getNumFound();
        System.out.println("记录数: "+numFound);
        
        //遍历
        for(SolrDocument sd: results){
            String id = (String) sd.getFieldValue("id");
            String product_name = (String) sd.getFieldValue("product_name");
            String product_catalog_name = (String) sd.getFieldValue("product_catalog_name");
            String product_picture = (String) sd.getFieldValue("product_picture");
            Double product_price = (Double) sd.getFieldValue("product_price");
            System.out.println("------------------------");
            System.out.println("商品id: "+id);
            System.out.println("商品名称: "+product_name);
            System.out.println("商品品牌: "+product_catalog_name);
            System.out.println("商品图片: "+product_picture);
            System.out.println("商品单价: "+product_price);
            
            //获取高亮区域的结构体
            Map<String, Map<String, List<String>>> HLMap = query.getHighlighting();
            if(HLMap != null){
                //根据id获取每一个域的高亮内容
                Map<String, List<String>> map = HLMap.get(id);
                //根据具体的域获取高亮内容
                List<String> contentList1 = map.get("product_name");
                if(contentList1.size() > 0 && contentList1 != null){
                    //输出高亮内容
                    for(String content1: contentList1){
                        System.out.println("高亮内容product_name: "+content1);
                    }
                }
                List<String> contentList2 = map.get("product_catalog_name");
                if(contentList2.size() > 0 && contentList2 != null){
                    //输出高亮内容
                    for(String content2: contentList2){
                        System.out.println("高亮内容product_catalog_name: "+content2);
                    }
                }
            }
        }
    }