在上述的基础上配置用户名和密码

若要在上述的基础上添加Elasticsearch的用户名和密码配置，可以按照以下步骤进行操作：

1. 在application.properties文件中添加Elasticsearch的用户名和密码配置：

spring.data.elasticsearch.properties.spring.data.elasticsearch.username=your-username
spring.data.elasticsearch.properties.spring.data.elasticsearch.password=your-password

替换"your-username"和"your-password"为你自己的Elasticsearch用户名和密码。

2. 在Spring Boot的启动类中添加以下配置：

import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.client.sniff.Sniffer;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.elasticsearch.config.AbstractElasticsearchConfiguration;

@Configuration
public class ElasticsearchConfig extends AbstractElasticsearchConfiguration {

    @Value("${spring.data.elasticsearch.cluster-nodes}")
    private String clusterNodes;

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

    @Value("${spring.data.elasticsearch.username}")
    private String username;

    @Value("${spring.data.elasticsearch.password}")
    private String password;

    @Override
    @Bean
    public RestHighLevelClient elasticsearchClient() {
        final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
        credentialsProvider.setCredentials(AuthScope.ANY,
                new UsernamePasswordCredentials(username, password));

        RestClientBuilder builder = RestClient.builder(HttpHost.create(clusterNodes))
                .setHttpClientConfigCallback(httpClientBuilder -> httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider));

        RestHighLevelClient client = new RestHighLevelClient(builder);

        // 添加Sniffer以支持自动发现节点变化
        Sniffer.builder(client.getLowLevelClient()).build();

        return client;
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.csrf().disable();
    }
}

这样，你就可以在上述的示例中配置Elasticsearch的用户名和密码。请确保替换"your-username"和"your-password"为你自己的Elasticsearch用户名和密码。

希望这个更新的配置可以帮助到你！