Es 搭建请自行寻找搭建方法
import org.elasticsearch.client.indices.GetIndexRequest; import org.elasticsearch.client.RequestOptions; public class EsServiceImpl implements EsService { @Resource private RestHighLevelClient restHighLevelClient; public boolean checkEsIndex(String esIndex) throws Exception { GetIndexRequest request = new GetIndexRequest(esIndex); return restHighLevelClient.indices().exists(request, RequestOptions.DEFAULT); } }
附 RestHighLevelClient 配置
// 配置文件中新增配置 es: nodes: [ { "host": "127.0.0.1","port": 9200 } ] // 新增 EsClientConfig 类 import com.bobft.fairy.vo.EsNodeVo; import lombok.Data; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.context.annotation.Configuration; import java.util.List; /** * Es 客户端配置 * * @author hcf * Date: 2021/12/13 13:54 */ @Data @Configuration @ConfigurationProperties(prefix = "es") public class EsClientConfig { private String clusterName; private List<EsNodeVo> nodes; } // 新增EsClient类 import lombok.extern.slf4j.Slf4j; import org.apache.commons.collections4.CollectionUtils; import org.apache.http.HttpHost; import org.elasticsearch.client.RestClient; import org.elasticsearch.client.RestClientBuilder; import org.elasticsearch.client.RestHighLevelClient; import org.springframework.context.annotation.Bean; import org.springframework.stereotype.Component; import javax.annotation.Resource; import java.io.IOException; import java.net.UnknownHostException; /** * ES客户端 * * @author hcf * @date 2021/12/17 13:55 */ @Slf4j @Component public class EsClient { @Resource private EsClientConfig esClientConfig; /** * 获取Es客户端信息 * * @return RestHighLevelClient * @throws IOException e */ @Bean public RestHighLevelClient restHighLevelClient() throws IOException { if (CollectionUtils.isEmpty(esClientConfig.getNodes())) { throw new UnknownHostException(); } HttpHost[] httpHosts = esClientConfig.getNodes().stream().map(esNodeVo -> new HttpHost(esNodeVo.getHost(), esNodeVo.getPort(), "http")).toArray(HttpHost[]::new); RestClientBuilder builder = RestClient.builder(httpHosts); builder.setRequestConfigCallback(requestConfigBuilder -> requestConfigBuilder.setSocketTimeout(10000)); return new RestHighLevelClient(builder); } }