ES: spring boot中使用RestHighLevelClient

import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.elasticsearch.client.ClientConfiguration;
import org.springframework.data.elasticsearch.client.RestClients;
import org.springframework.data.elasticsearch.config.AbstractElasticsearchConfiguration;
 
@Configuration
public class ElasticsearchConfig extends AbstractElasticsearchConfiguration {
 
    @Override
    @Bean
    public RestHighLevelClient elasticsearchClient() {
        final ClientConfiguration clientConfiguration = ClientConfiguration.builder()
                .connectedTo("localhost:9200") // 替换为你的Elasticsearch节点地址
                .build();
        return RestClients.create(clientConfiguration).rest();
    }
}

这段代码定义了一个配置类ElasticsearchConfig，它扩展了AbstractElasticsearchConfiguration并重写了elasticsearchClient方法，在该方法中创建了一个RestHighLevelClient Bean，用于与Elasticsearch集群进行通信。你需要替换"localhost:9200"为你的Elasticsearch节点地址。这样，在Spring Boot应用中就可以通过依赖注入来使用RestHighLevelClient了。