搜索学习--Solr全文搜索服务器的基本使用（一）——SolrJ的使用

谁借莪１个温暖的怀抱￠ 2022-06-04 06:17 221阅读 0赞

> 作为一般的Lucene使用者，我们直接用Lucene虽然可以实现很多自己想要的自定义功能，但是对于一般的项目，为了方便开发和维护，我们通常会使用现成的搜索服务器。现在常用的有**Solr**和**ElasticSearch**。  
> 对于Solr服务器如何搭建，[Solr服务器的搭建][Solr]，之前已经整理过，这次，我将使用SolrJ来调用Solr服务器。

### 在Solr中配置Core ###

> 在managed-schema中，主要的配置为：

<uniqueKey>blogId</uniqueKey>
 <field name="blogId" type="string" indexed="true" stored="true" required="true" multiValued="false" /> 
 <field name="blogTitle" type="text_ik" indexed="true" stored="true" required="true" multiValued="false" /> 
 <field name="blogContent" type="text_ik" indexed="true" stored="true" required="true" multiValued="false" /> 
 <field name="createTime" type="date" indexed="false" stored="true" required="true" multiValued="false" /> 
 <field name="keywords" type="text_ik" indexed="true" stored="false" multiValued="true"/> 
 <copyField source="blogTitle" dest="keywords"/>
 <copyField source="blogContent" dest="keywords"/>
 <fieldType name="text_ik" class="solr.TextField">
 <analyzer type="index" useSmart="false"
 class="org.wltea.analyzer.lucene.IKAnalyzer" />
 <analyzer type="query" useSmart="true"
 class="org.wltea.analyzer.lucene.IKAnalyzer" />
 </fieldType>

### 依赖 ###

<dependency>
 <groupId>org.apache.solr</groupId>
 <artifactId>solr-solrj</artifactId>
 <version>6.5.1</version>
 </dependency>

### SolrServer.Java ###

package top.yuyufeng.learn.lucene.solr;
    
    import org.apache.solr.client.solrj.impl.HttpSolrClient;
    
    /**
     * @author yuyufeng
     * @date 2017/12/6
     */
    public class SolrServer {
        private static HttpSolrClient server = null;
        private final static String solrServerUrl = "http://127.0.0.1:8983/solr/blog";
    
        public static HttpSolrClient getServer() {
            if (server == null) {
                server = new HttpSolrClient(solrServerUrl);
                server.setDefaultMaxConnectionsPerHost(1000);
                server.setMaxTotalConnections(10000);//最大连接数
                server.setConnectionTimeout(60000);//设置连接超时时间（单位毫秒） 1000
                server.setSoTimeout(60000); 设置读数据超时时间(单位毫秒) 1000
                server.setFollowRedirects(false);//遵循从定向
                server.setAllowCompression(true);//允许压缩
            }
            return server;
        }
    
        public static void main(String[] args) {
            HttpSolrClient client = getServer();
            System.out.println(client);
        }
    }

### BlogCore.java ###

package top.yuyufeng.learn.lucene.solr.core;
    
    import org.apache.solr.client.solrj.beans.Field;
    
    import java.util.Date;
    
    /**
     * @author yuyufeng
     * @date 2017/12/6
     */
    public class BlogCore {
        @Field
        private String blogId;
        @Field
        private String blogTitle;
        @Field
        private String blogContent;
        @Field
        private Date createTime;
        @Field
        private String keywords;
    
        public String getBlogId() {
            return blogId;
        }
    
        public void setBlogId(String blogId) {
            this.blogId = blogId;
        }
    
        public String getBlogTitle() {
            return blogTitle;
        }
    
        public void setBlogTitle(String blogTitle) {
            this.blogTitle = blogTitle;
        }
    
        public String getBlogContent() {
            return blogContent;
        }
    
        public void setBlogContent(String blogContent) {
            this.blogContent = blogContent;
        }
    
        public Date getCreateTime() {
            return createTime;
        }
    
        public void setCreateTime(Date createTime) {
            this.createTime = createTime;
        }
    
        public String getKeywords() {
            return keywords;
        }
    
        public void setKeywords(String keywords) {
            this.keywords = keywords;
        }
    
        @Override
        public String toString() {
            return "BlogCore{" +
                    "blogId='" + blogId + '\'' +
                    ", blogTitle='" + blogTitle + '\'' +
                    ", blogContent='" + blogContent + '\'' +
                    ", createTime=" + createTime +
                    ", keywords='" + keywords + '\'' +
                    '}';
        }
    }

### BlogSolrDao.java ###

package top.yuyufeng.learn.lucene.solr.dao;
 
 import org.apache.solr.client.solrj.SolrQuery;
 import org.apache.solr.client.solrj.impl.HttpSolrClient;
 import org.apache.solr.client.solrj.response.QueryResponse;
 import org.apache.solr.client.solrj.response.UpdateResponse;
 import top.yuyufeng.learn.lucene.solr.SolrServer;
 import top.yuyufeng.learn.lucene.solr.core.BlogCore;
 
 import java.awt.print.Pageable;
 import java.util.List;
 import java.util.Map;
 
 /**
 * @author yuyufeng
 * @date 2017/12/6
 */
 public class BlogSolrDao{
 HttpSolrClient server;
 
 public BlogSolrDao() {
 server = SolrServer.getServer();
 }
 
 /**
 * 按Bean 添加/修改 索引
 *
 * @throws Exception
 */
 public int addIndex(BlogCore entity) throws Exception {
 server.addBean(entity);
 UpdateResponse updateResponse = server.commit();
 return updateResponse.getStatus();
 }
 
 
 /**
 * 按Bean 添加/修改 索引
 *
 * @throws Exception
 */
 public int addIndexList(List<BlogCore> entitys) throws Exception {
 server.addBeans(entitys);
 UpdateResponse updateResponse = server.commit();
 return updateResponse.getStatus();
 
 }
 
 /**
 * 删除索引 按查询
 *
 * @throws Exception
 */
 public int deleteAll() throws Exception {
 String query = "*:*";
 server.deleteByQuery(query);
 server.commit();
 UpdateResponse updateResponse = server.commit();
 return updateResponse.getStatus();
 }
 
 /**
 * 删除索引 按id
 *
 * @throws Exception
 */
 public int deleteByQuery(Long id) throws Exception {
 server.deleteById(id + "");
 server.commit();
 UpdateResponse updateResponse = server.commit();
 return updateResponse.getStatus();
 }
 
 //查询所有
 public List<BlogCore> query() throws Exception {
 SolrQuery query = new SolrQuery();
 query.setQuery("*:*");
 query.setStart(0);//开始记录数
 query.setRows(10000);//总条数
 QueryResponse queryResponse = server.query(query);
 List<BlogCore> results = queryResponse.getBeans(BlogCore.class);
 return results;
 }
 
 
 //搜索keywords
 public List<BlogCore> queryByKeyWords(String keywords) throws Exception {
 
 SolrQuery query = new SolrQuery();
 query.set("q", "keywords:" + keywords);//*通配多个字符
 // query.set("sort", "product_price desc");
 //======高亮设置===
 //开启高亮
 query.setHighlight(true);
 //高亮域
 query.addHighlightField("blogContent");
 query.addHighlightField("blogTitle");
 //前缀
 query.setHighlightSimplePre("");
 //后缀
 query.setHighlightSimplePost("");
 //query.setHighlightSnippets(1);//结果分片数，默认为1
 //query.setHighlightFragsize(1000);//每个分片的最大长度，默认为100
 
 query.setStart(0);//开始记录数
 query.setRows(100);//总条数
 QueryResponse queryResponse = server.query(query);
 long sum = queryResponse.getResults().getNumFound();
 List<BlogCore> results = queryResponse.getBeans(BlogCore.class);
 //输出高亮
 Map<String, Map<String, List<String>>> highlighting = queryResponse.getHighlighting();
 
 for (BlogCore result : results) {
 Map<String, List<String>> map = highlighting.get(result.getBlogId()+"");
 List<String> list = map.get("blogTitle");
 if (list != null && list.size() > 0) {
 result.setBlogTitle(list.get(0));
 }
 list = map.get("blogContent");
 if (list != null && list.size() > 0) {
 result.setBlogContent(list.get(0));
 }
 }
 return results;
 }
 }

### SolrTest.java ###

package top.yuyufeng.learn.lucene.solr;
 
 import org.junit.Test;
 import top.yuyufeng.learn.lucene.solr.core.BlogCore;
 import top.yuyufeng.learn.lucene.solr.dao.BlogSolrDao;
 
 import java.util.Date;
 import java.util.List;
 
 /**
 * @author yuyufeng
 * @date 2017/12/6
 */
 public class SolrTest {
 
 @Test
 public void testIndex() throws Exception {
 BlogSolrDao blogSolrDao = new BlogSolrDao();
 BlogCore blog = new BlogCore();
 blog.setBlogId("2");
 blog.setBlogTitle("达摩院超越业界龙头");
 blog.setBlogContent("达摩院一定也必须要超越英特尔，必须超越微软，必须超越IBM，因为我们生于二十一世纪，我们是有机会后发优势的。");
 blog.setCreateTime(new Date());
 blogSolrDao.addIndex(blog);
 }
 
 @Test
 public void testFindAll() throws Exception {
 BlogSolrDao blogSolrDao = new BlogSolrDao();
 List<BlogCore> list = blogSolrDao.query();
 for (BlogCore blogCore : list) {
 System.out.println(blogCore);
 }
 }
 
 
 @Test
 public void testSearch() throws Exception {
 BlogSolrDao blogSolrDao = new BlogSolrDao();
 List<BlogCore> list = blogSolrDao.queryByKeyWords("达摩院");
 for (BlogCore blogCore : list) {
 System.out.println(blogCore);
 }
 }
 }

### 运行结果： ###

> 启动Solr服务器后，我建立了一些索引，然后我执行Search方法
> 
> BlogCore{blogId='2', blogTitle='达摩院超越业界龙头', blogContent='达摩院一定也必须要超越英特尔，必须超越微软，必须超越IBM，因为我们生于二十一世纪，我们是有机会后发优势的。', createTime=Wed Dec 06 13:38:12 CST 2017, keywords='null'}
> BlogCore{blogId='1', blogTitle='马云表达愿景', blogContent='10月11日杭州云栖大会上，马云表达了对新建成的阿里巴巴全球研究院—阿里巴巴达摩院的愿景，希望达摩院二十年内成为世界第一大经济体，服务世界二十亿人，创造一亿个工作岗位。', createTime=Wed Dec 06 12:03:56 CST 2017, keywords='null'}

[Solr]: http://blog.csdn.net/qq_18860653/article/details/74280088