Action: Consider revisiting the entries above or defining a bean of type 'org.elasticsearch.client.transport.TransportClient' in your configuration

接上一篇文章，在使用TransportClient后，直接注入TransportClient，需要使用的方法可以使用了，但是运行后报错了：

A component required a bean of type 'org.elasticsearch.client.transport.TransportClient' that could not be found.

提示：

Action:  Consider revisiting the entries above or defining a bean of type 'org.elasticsearch.client.transport.TransportClient' in your configuration

那就肯定是没有向Spring中注入TransportClient的Bean了；

方法如下：

@Component
public class ElasticsearchClient implements DisposableBean {

    private static final Logger logger = LoggerFactory.getLogger(ElasticsearchClient.class);

    private TransportClient transportClient;

    @Value("${elasticsearch.cluster.name}")
    private String clusterName;

    @Value("${elasticsearch.host}")
    private String host;

    @Value("${elasticsearch.port:9200}")
    private String port;

    @Bean
    public TransportClient getTransportClient() throws Exception {

        Settings settings = Settings.builder().put("cluster.name", clusterName)
                .put("client.transport.sniff", true)
                .build();
        transportClient = new PreBuiltTransportClient(settings)
                .addTransportAddress(new TransportAddress(InetAddress.getByName(host), Integer.valueOf(port)));
        logger.info("elasticsearch transportClient 连接成功");
        return transportClient;
    }

    @Override
    public void destroy() throws Exception {

        if (transportClient != null) {
            transportClient.close();
        }
    }
}

当然在application.yaml文件中也要配置相应的信息：

elasticsearch:
    cluster:
    name:
  host:
  port: 9200

这里cluster.name和host我都是空，可以自行设置；

另外在pom.xml文件添加了相应的依赖：

<dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>transport</artifactId>
</dependency>

这里版本就根据我的的elasticsearch版本来的，注意这里elasticsearch版本要在7.x及以下。