ElasticSearch: High Level Rest Client Connection

In this tutorial I will show you how to use the ElasticSearch high level rest client.

First you will need to add the low level rest to the pom.

<properties>
	<elasticSearch.version>6.2.4</elasticSearch.version>
</properties>

<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-high-level-client</artifactId>
    <version>${elasticSearch.version}</version>
</dependency>

Next you will need to specify the imports.

import java.util.List;
import java.util.ArrayList;
import java.util.Arrays;
import org.apache.http.HttpHost;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestClientBuilder;
import org.elasticsearch.client.RestHighLevelClient;

Now you can connect to ElasticSearch.

final List hosts = new ArrayList<>(Arrays.asList("localhost"));
final Integer port = 9200;
final String scheme = "http";
		
final HttpHost[] httpHosts = hosts.stream().map(host -> new HttpHost(host, port, scheme)).toArray(HttpHost[]::new);

final RestClientBuilder restClientBuilder = RestClient.builder(httpHosts);
final RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder);

Now you can do whatever you need to!