Elasticsearch使用

Elasticsearch使用

Elasticsearch使用
文档链接：https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/java-rest-high-getting-started-initialization.html

配置config

import org.apache.http.HttpHost;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class EsConfig {
  @Bean
  public RestHighLevelClient restHighLevelClient(){
      RestHighLevelClient client = new RestHighLevelClient(
              RestClient.builder(
                      new HttpHost("IP", 端口, "http")));
      return client;
  }	
}

创建util

@Component
public class ElasticsearchUtil {
@Autowired
private RestHighLevelClient restHighLevelClient;
private static RestHighLevelClient restClient;

@PostConstruct
public void init() {
	restClient = this.restHighLevelClient;
}
SearchRequest searchRequest = new earchRequest(索引名称);
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder().trackTotalHits(true);
BoolQueryBuilder queryBuilders1 =QueryBuilders.boolQuery();
if(StringUtils.isNotBlank(keyWord)){
  String param = "*"+keyWord+"*";
//MatchQueryBuilder termQueryBuilder = QueryBuilders.matchQuery("字段","查询的值");
//matchQuery：会将搜索词分词，再与目标查询字段进行匹配，若分词中的任意一个词与目标字段匹配上，则可查询到。
//termQuery：不会对搜索词进行分词处理，而是作为一个整体与目标字段进行匹配，若完全匹配，则可查询到。
queryBuilders1.must(QueryBuilders.wildcardQuery("name.keyword",param));
}
//分页查询，从第0条，查询100条数据
searchSourceBuilder.query(queryBuilders1).from(0).size(100);
searchRequest.source(searchSourceBuilder); 		
search = restClient.search(searchRequest, RequestOptions.DEFAULT);
}

maven

		
			org.elasticsearch.client
			elasticsearch-rest-high-level-client
			7.4.2
			
				
					org.elasticsearch
					elasticsearch
				
				
					org.elasticsearch.client
					elasticsearch-rest-client
				
			
		
		
			org.elasticsearch.client
			elasticsearch-rest-client
			7.4.2
		
		
			org.elasticsearch
			elasticsearch
			7.4.2
		
		
		
			io.searchbox
			jest
			5.3.3
		
		
			com.janeluo
			ikanalyzer
			2012_u6