org.elasticsearch.common.transport.InetSocketTransportAddress对应Maven

`org.elasticsearch.common.transport.InetSocketTransportAddress` 也是 Elasticsearch 的 Java Transport Client 的一部分，可以在 Maven 中通过以下依赖添加：

<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>transport</artifactId>
    <version>7.14.0</version>
</dependency>

其中，`7.14.0` 是 Elasticsearch 的版本号，你可以根据自己使用的 Elasticsearch 版本选择相应的版本号。

相关问题

java 写一个es工具

### 回答1：
要写一个 Java 工具来操作 Elasticsearch，可以使用官方提供的 Java API。

首先需要导入相关的依赖，在 Maven 中可以在 pom.xml 文件中加入如下内容：

<dependency>
  <groupId>org.elasticsearch.client</groupId>
  <artifactId>elasticsearch-rest-high-level-client</artifactId>
  <version>7.10.0</version>
</dependency>

然后就可以使用 Java API 来操作 Elasticsearch 了。以下是一个简单的示例，用来连接到 Elasticsearch 并执行一次搜索操作：

import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.index.query.MatchAllQueryBuilder;
import org.elasticsearch.search.builder.SearchSourceBuilder;

public class EsExample {
  public static void main(String[] args) throws Exception {
    RestHighLevelClient client = new RestHighLevelClient(
        RestClient.builder(
            new HttpHost("localhost", 9200, "http")
        )
    );

    SearchRequest searchRequest = new SearchRequest("my_index");
    SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
    searchSourceBuilder.query(new MatchAllQueryBuilder());
    searchRequest.source(searchSourceBuilder);

    SearchResponse searchResponse = client.search(searchRequest);
    System.out.println(searchResponse);

    client.close();
  }
}

这只是一个简单的示例，实际使用中可以根据需要调整更多的参数和执行更复杂的操作。

### 回答2：
ES（Elasticsearch）是一个开源的分布式、高性能的搜索和分析引擎，常用于存储和检索大量的结构化和非结构化数据。下面是一个用Java编写的ES工具的示例：

import org.apache.http.HttpHost;
import org.elasticsearch.action.admin.indices.create.CreateIndexRequest;
import org.elasticsearch.action.admin.indices.create.CreateIndexResponse;
import org.elasticsearch.action.delete.DeleteRequest;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.builder.SearchSourceBuilder;

import java.io.IOException;

public class ESUtils {
    private RestHighLevelClient client;

    public ESUtils() {
        client = new RestHighLevelClient(
                RestClient.builder(new HttpHost("localhost", 9200, "http")));
    }

    public void createIndex(String indexName) throws IOException {
        CreateIndexRequest request = new CreateIndexRequest(indexName);
        CreateIndexResponse response = client.indices().create(request, RequestOptions.DEFAULT);
        if (response.isAcknowledged() && response.isShardsAcknowledged()) {
            System.out.println("Index created successfully.");
        }
    }

    public void insertDocument(String indexName, String document) throws IOException {
        IndexRequest request = new IndexRequest(indexName);
        request.source(document, XContentType.JSON);
        IndexResponse response = client.index(request, RequestOptions.DEFAULT);
        if (response.getResult().getLowercase().equals("created")) {
            System.out.println("Document inserted successfully.");
        }
    }

    public void deleteDocument(String indexName, String id) throws IOException {
        DeleteRequest request = new DeleteRequest(indexName, id);
        DeleteResponse response = client.delete(request, RequestOptions.DEFAULT);
        if (response.getResult().getLowercase().equals("deleted")) {
            System.out.println("Document deleted successfully.");
        }
    }

    public void searchDocuments(String indexName, String field, String value) throws IOException {
        SearchRequest request = new SearchRequest(indexName);
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        sourceBuilder.query(QueryBuilders.matchQuery(field, value));
        request.source(sourceBuilder);
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
        for (SearchHit hit : response.getHits().getHits()) {
            System.out.println(hit.getSourceAsString());
        }
    }

    public void closeClient() throws IOException {
        client.close();
        System.out.println("Client closed.");
    }

    public static void main(String[] args) throws IOException {
        ESUtils esUtils = new ESUtils();
        esUtils.createIndex("my_index");
        esUtils.insertDocument("my_index", "{\"name\":\"John Doe\",\"age\":30}");
        esUtils.searchDocuments("my_index", "name", "John");
        esUtils.deleteDocument("my_index", "1");
        esUtils.closeClient();
    }
}

以上代码是一个简单的ES工具，提供了创建索引、插入文档、删除文档和搜索文档的功能。使用RestHighLevelClient来与ES进行交互，通过HTTP进行通信。可以根据需要进行扩展和修改，实现更多的ES操作功能。

### 回答3：
Java写一个ES工具可以使用Elasticsearch的Java客户端来实现。Elasticsearch是一个开源的分布式搜索引擎，提供了丰富的RESTful API接口，可以用于构建高性能的搜索功能。

首先，需要引入Elasticsearch的Java客户端依赖，可以在Maven或者Gradle中添加相应的依赖项。然后，创建一个ES工具类，用于封装与Elasticsearch的交互逻辑。

在工具类中，可以实现一些常用的操作方法，例如索引文档、更新文档、删除文档、搜索文档等。这些方法可以通过调用Elasticsearch Java客户端提供的API来实现。

例如，可以使用TransportClient来与Elasticsearch集群建立连接，并通过API来执行相关操作。假设要实现一个索引文档的方法，可以按照以下步骤：

1. 创建一个TransportClient对象，并指定连接的Elasticsearch集群的地址和端口。
2. 创建一个IndexRequest对象，设置要索引的文档内容。
3. 调用TransportClient的index方法，传入IndexRequest对象，来执行索引操作。
4. 根据返回结果判断操作是否成功，并进行相应的处理。

类似地，可以实现其他操作方法，根据具体需求调用相应的API即可。在使用工具类时，可以根据具体的业务需求来调用相应的方法，实现对Elasticsearch的操作。

需要注意的是，在使用ES工具时，应该合理处理异常情况，并需要保证ES集群的数据一致性和安全性。此外，还可以对ES工具进行扩展，根据实际需求添加其他功能，例如分页查询、聚合操作等。

总之，通过使用Elasticsearch的Java客户端，结合具体的业务需求，可以编写一个实用的ES工具，用于方便地与Elasticsearch集群进行交互操作。

java api连接kerberos认证的es 生成一个demo，要求使用最新的java api

好的，我可以为您提供一个 Java API 连接 Kerberos 认证的 Elasticsearch 的示例代码。

首先，您需要在 Maven 项目中添加以下 Elasticsearch 和 Kerberos 相关的依赖：

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

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

<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-to-slf4j</artifactId>
    <version>2.14.1</version>
</dependency>

<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-api</artifactId>
    <version>2.14.1</version>
</dependency>

<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-core</artifactId>
    <version>2.14.1</version>
</dependency>

<dependency>
    <groupId>com.sun.security.auth.module</groupId>
    <artifactId>jaas</artifactId>
    <version>1.8.0_212</version>
</dependency>

<dependency>
    <groupId>org.apache.hadoop</groupId>
    <artifactId>hadoop-common</artifactId>
    <version>3.3.1</version>
</dependency>

<dependency>
    <groupId>org.apache.hadoop</groupId>
    <artifactId>hadoop-auth</artifactId>
    <version>3.3.1</version>
</dependency>

接下来，您需要创建一个 `RestHighLevelClient` 对象并为其配置 Kerberos 认证，示例代码如下：

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.security.UserGroupInformation;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.client.sniff.Sniffer;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.util.concurrent.ThreadContext;
import org.elasticsearch.transport.client.PreBuiltTransportClient;
import org.elasticsearch.xpack.core.security.authc.support.UsernamePasswordToken;
import org.elasticsearch.xpack.security.authc.AuthenticationToken;
import org.elasticsearch.xpack.security.authc.support.DefaultAuthenticationFailureHandler;
import org.elasticsearch.xpack.security.authc.support.UsernamePasswordToken;
import org.elasticsearch.xpack.security.transport.netty4.SecurityNetty4Transport;

import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.UnknownHostException;
import java.security.PrivilegedAction;
import java.util.concurrent.TimeUnit;

public class ElasticsearchKerberosClient {

    private final String clusterName;
    private final String[] nodeIps;
    private final String realm;
    private final String username;
    private final String password;
    private final String serviceName;
    private final String keytabPath;

    private RestHighLevelClient client;
    private Sniffer sniffer;

    public ElasticsearchKerberosClient(String clusterName, String[] nodeIps, String realm, String username, String password, String serviceName, String keytabPath) {
        this.clusterName = clusterName;
        this.nodeIps = nodeIps;
        this.realm = realm;
        this.username = username;
        this.password = password;
        this.serviceName = serviceName;
        this.keytabPath = keytabPath;
    }

    public void init() throws Exception {
        final Configuration conf = new Configuration();
        conf.set("hadoop.security.authentication", "Kerberos");

        UserGroupInformation.setConfiguration(conf);
        UserGroupInformation.loginUserFromKeytab(username, keytabPath);

        final Settings settings = Settings.builder()
                .put("cluster.name", clusterName)
                .put("xpack.security.user", username + ":" + password)
                .put(SecurityNetty4Transport.SSL_KEYSTORE_PASSWORD_SETTING.getKey(), password)
                .put(SecurityNetty4Transport.SSL_TRUSTSTORE_PASSWORD_SETTING.getKey(), password)
                .put(SecurityNetty4Transport.SSL_KEYSTORE_PATH_SETTING.getKey(), "path/to/keystore.jks")
                .put(SecurityNetty4Transport.SSL_TRUSTSTORE_PATH_SETTING.getKey(), "path/to/truststore.jks")
                .put(SecurityNetty4Transport.SSL_KEYSTORE_TYPE_SETTING.getKey(), "JKS")
                .put(SecurityNetty4Transport.SSL_TRUSTSTORE_TYPE_SETTING.getKey(), "JKS")
                .put(SecurityNetty4Transport.SSL_HTTP_ENABLED_SETTING.getKey(), true)
                .put(SecurityNetty4Transport.SSL_TRANSPORT_ENABLED_SETTING.getKey(), true)
                .put(SecurityNetty4Transport.SSL_KEYSTORE_KEY_PASSWORD_SETTING.getKey(), password)
                .put("xpack.security.transport.ssl.verification_mode", "certificate")
                .put("xpack.security.transport.ssl.enabled", true)
                .put("xpack.security.authc.token.enabled", true)
                .put("xpack.security.authc.realms.kerberos.krb5.files", "/etc/krb5.conf")
                .put("xpack.security.authc.realms.kerberos.krb5.service_name", serviceName)
                .put("xpack.security.authc.realms.kerberos.acceptor_principal", "HTTP/_HOST@REALM")
                .build();

        final RestClient restClient = RestClient.builder(
                new HttpHost(nodeIps[0], 9200, "https"),
                new HttpHost(nodeIps[1], 9200, "https"),
                new HttpHost(nodeIps[2], 9200, "https"))
                .setHttpClientConfigCallback(httpClientBuilder -> {
                    httpClientBuilder.disableAuthCaching();
                    return httpClientBuilder;
                })
                .setRequestConfigCallback(requestConfigBuilder ->
                        requestConfigBuilder.setConnectTimeout((int) TimeUnit.MINUTES.toMillis(1))
                                .setConnectionRequestTimeout((int) TimeUnit.MINUTES.toMillis(1))
                                .setSocketTimeout((int) TimeUnit.MINUTES.toMillis(1)))
                .build();

        final ThreadContext threadContext = new ThreadContext(settings);
        final DefaultAuthenticationFailureHandler failureHandler = new DefaultAuthenticationFailureHandler(settings, threadContext);
        final Sniffer sniffer = Sniffer.builder(restClient)
                .setSniffIntervalMillis(30000)
                .setFailureListener(new Sniffer.FailureListener() {
                    @Override
                    public void onFailure(TransportAddress address) {
                        if (address != null) {
                            failureHandler.authenticationFailed(address.toString(), null);
                        }
                    }
                })
                .build();
        this.sniffer = sniffer;

        final RestHighLevelClient client = new RestHighLevelClient(restClient) {
            @Override
            public AuthenticationToken authenticate(AuthenticationToken token) {
                if (token instanceof UsernamePasswordToken) {
                    final UsernamePasswordToken upToken = (UsernamePasswordToken) token;
                    final String upTokenUsername = upToken.username();
                    final String upTokenPassword = new String(upToken.credentials().clone());

                    return new UsernamePasswordToken(upTokenUsername, upTokenPassword.toCharArray());
                } else {
                    return token;
                }
            }
        };
        this.client = client;
    }

    public void close() {
        try {
            if (client != null) {
                client.close();
            }
            if (sniffer != null) {
                sniffer.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public RestHighLevelClient getClient() {
        return client;
    }

    public static void main(String[] args) throws Exception {
        final String clusterName = "elasticsearch";
        final String[] nodeIps = {"127.0.0.1", "127.0.0.2", "127.0.0.3"};
        final String realm = "YOUR-REALM.COM";
        final String username = "YOUR-USERNAME";
        final String password = "YOUR-PASSWORD";
        final String serviceName = "elasticsearch";
        final String keytabPath = "/path/to/keytab";

        final ElasticsearchKerberosClient esClient = new ElasticsearchKerberosClient(clusterName, nodeIps, realm, username, password, serviceName, keytabPath);
        esClient.init();

        final RestHighLevelClient client = esClient.getClient();
        // TODO: 使用 client 对象进行 Elasticsearch 查询操作

        esClient.close();
    }

}

请根据您的实际情况，修改示例代码中的参数和配置。