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
