如何在Java客户端中使用用户名和密码(无SSL)连接到Elasticsearch？

<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-client</artifactId>
    <version>7.15.1</version>
</dependency>

import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestClientBuilder;

RestClientBuilder builder = RestClient.builder(
        new HttpHost("localhost", 9200, "http")
);
RestClient restClient = builder.build();

String username = "your_username";
String password = "your_password";
CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
credentialsProvider.setCredentials(AuthScope.ANY,
        new UsernamePasswordCredentials(username, password));

restClientBuilder.setHttpClientConfigCallback(httpClientBuilder -> {
    httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
    return httpClientBuilder;
});

Response response = restClient.performRequest(
        "GET",
        "/your_index/_search"
);