RestHighLevelClient Could not autowire. There is more than one bean of ‘RestHighLevelClient‘ type.

在使用SpringBoot整合Elasticsearch7.x的时候，创建RestHighLevelClient的时候出现了一下问题

具体的配置文件如下

package priv.cwr.es.config;

import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.beans.factory.annotation.Value;
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;

/**
 * @Description Elasticsearch config
 * @Author CWR
 * @Date 2021/10/29 15:24
 */
@Configuration
public class RestClientConfig extends AbstractElasticsearchConfiguration {

    /**
     * es host
     */
    @Value("${elasticsearch.host}")
    private String esHost;

    /**
     * es port
     */
    @Value("${elasticsearch.port}")
    private String esPort;

    /**
     * 创建Bean
     *
     * @return
     */
    @Bean
    @Override
    public RestHighLevelClient elasticsearchClient() {
        final ClientConfiguration clientConfiguration = ClientConfiguration.builder()
                .connectedTo(esHost + ":" + esPort)
                .build();
        return RestClients.create(clientConfiguration).rest();
    }
}

 最后排查后发现elasticsearchClient()创建的beanName为elasticsearchClient，但是实际注入的beanName为restHighLevelClient，因为elasticsearchClient()是覆写的抽象方法，所以只需要把引入的restHighLevelClient改为elasticsearchClient即可