【翻译】Elasticsearch Java API Client 8.13.2 （第二章-设置）

import co.elastic.clients.elasticsearch.ElasticsearchClient;
import co.elastic.clients.json.JsonData;
import co.elastic.clients.elasticsearch.core.SearchRequest;
import co.elastic.clients.elasticsearch.core.SearchResponse;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestClientBuilder;
 
public class ElasticsearchJavaApiExample {
    public static void main(String[] args) throws IOException {
        // 配置Elasticsearch客户端
        RestClientBuilder builder = RestClient.builder(
                new HttpHost("localhost", 9200, "http"));
        
        // 创建Elasticsearch客户端
        try (RestClient restClient = builder.build()) {
            ElasticsearchClient client = new ElasticsearchClient(restClient);
            
            // 执行搜索请求
            SearchRequest searchRequest = SearchRequest.of(sr -> 
                sr.index("kibana_sample_data_ecommerce"));
            SearchResponse<JsonData> searchResponse = client.search(searchRequest, JsonData.class);
            
            // 输出搜索结果
            System.out.println(searchResponse.hits());
        }
    }
}

这段代码展示了如何使用Elasticsearch Java API Client库来配置和连接到Elasticsearch实例，并执行一个简单的搜索请求。它使用了Java的try-with-resources结构来确保资源得到正确释放。