spring boot集成Elasticsearch 7.16.3-编程知识

spring boot集成Elasticsearch 7.16.3

环境：Elasticsearch 版本 7.16.3

Elasticsearch for windows下载地址
windows
若依
spring boot版本 2.6.0

在这里插入图片描述

pom文件添加

		<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-elasticsearch</artifactId></dependency><dependency><groupId>org.elasticsearch</groupId><artifactId>elasticsearch</artifactId><version>8.12.0</version></dependency>

自定义配置类

import org.apache.http.HttpHost;
import org.apache.http.client.config.RequestConfig;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestClientBuilder;
import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.elasticsearch.config.AbstractElasticsearchConfiguration;@Configuration
public class ESConfig extends AbstractElasticsearchConfiguration {@Overridepublic RestHighLevelClient elasticsearchClient() {// 设置连接超时和读取超时时间（单位：毫秒）int connectionTimeout = 60000; // 60 秒int readTimeout = 60000; // 60 秒// 创建 RequestConfigRequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(connectionTimeout).setSocketTimeout(readTimeout).build();// 创建 RestClientBuilderRestClientBuilder builder = RestClient.builder(new HttpHost("localhost", 9200)).setHttpClientConfigCallback(httpClientBuilder ->httpClientBuilder.setDefaultRequestConfig(requestConfig));// 创建 RestHighLevelClientRestHighLevelClient client = new RestHighLevelClient(builder);return client;}
}

实体类

indexName = “zbinfo” //索引名

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;
import org.springframework.data.elasticsearch.annotations.Field;
import org.springframework.data.elasticsearch.annotations.FieldType;@Document(indexName = "zbinfo",shards = 1,replicas = 0)
@Data
@AllArgsConstructor
@NoArgsConstructor
public class ESZbInfo {@Id@Field(type = FieldType.Keyword)private Long id;@Field(type = FieldType.Long)private Long nid;/** 标题 */@Field(type = FieldType.Text)private String title;@Field(type = FieldType.Text)private String content;
}

创建操作的Repository

import com.dataDemo.system.domain.ESZbInfo;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
import org.springframework.stereotype.Repository;@Repository
public interface ESZbInfoRepstitory extends ElasticsearchRepository<ESZbInfo, String> {}

操作CRUD

	@Autowiredprivate ESZbInfoRepstitory esZbInfoRepstitory;@Autowiredprivate ElasticsearchOperations elasticsearchOperations;//批量插入
public void insertEsZbInfo(){List<ZbInfoTxy> list= zbInfoTxyService.selectZbInfoTxyListLocal(new ZbInfoTxy());Integer count = 0;List<ESZbInfo> lists = new ArrayList<>();if(list.size() != 0){for(ZbInfoTxy zbInfoTxy:list){System.out.println("数量----"+count+"-----date---"+ DateUtils.getTime());ESZbInfo zbInfo = new ESZbInfo();zbInfo.setId(zbInfoTxy.getNid());zbInfo.setTitle(zbInfoTxy.getTitle());               zbInfo.setContent(zbInfoTxy.getContent());lists.add(zbInfo);count++;}}//批量插入方法esZbInfoRepstitory.saveAll(lists);}//单个插入esZbInfoRepstitory.save(new ZbInfoTxy ());//删除public void deleteEsAll(){System.out.println("删除全部:");esZbInfoRepstitory.deleteAll();}//查询 --根据关键词查询public void selectEsZbInfo(String title){System.out.println("根据关键词查询:");/*** //单条件模糊查询* NativeSearchQuery query = new NativeSearchQueryBuilder()*                 .withQuery(QueryBuilders.matchPhraseQuery("title", title))*                 .build();** //多条件匹配查询*  NativeSearchQuery query = new NativeSearchQueryBuilder()*                 .withQuery(QueryBuilders.boolQuery()*                         .must(QueryBuilders.matchPhraseQuery("title", title))*                         .must(QueryBuilders.matchQuery("city", 98)))*                 .build();** //检索一个字段在两个字段中出现过的* NativeSearchQuery query = new NativeSearchQueryBuilder()*         .withQuery(QueryBuilders.boolQuery()*                 .must(QueryBuilders.multiMatchQuery(title, "title", "content")))*         .build();*/NativeSearchQuery query = new NativeSearchQueryBuilder().withQuery(QueryBuilders.boolQuery().must(QueryBuilders.matchPhraseQuery("title", title)).must(QueryBuilders.matchQuery("city", 98))).build();SearchHits<ESZbInfo> searchHits = elasticsearchOperations.search(query, ESZbInfo.class);List<ESZbInfo> list = searchHits.stream().map(SearchHit::getContent).collect(Collectors.toList());if(list.size() != 0){for(ESZbInfo esZbInfo:list){System.out.println(esZbInfo);}}}//根据id查询public void selectEsById(String id){Optional<ESZbInfo> optionalById = this.esZbInfoRepstitory.findById(id);System.out.println("单个查询---"+optionalById);}