java建立客户端连接,java 创建elasticsearch客户端连接Client

java连接客户端主要为两种方式，一种是没有鉴权，一种是集群通过search-guard添加ssl鉴权。

无鉴权模式

import org.elasticsearch.client.Client;

import org.elasticsearch.client.transport.TransportClient;

import org.elasticsearch.common.settings.Settings;

import org.elasticsearch.common.transport.InetSocketTransportAddress;

import org.elasticsearch.transport.client.PreBuiltTransportClient;

import org.springframework.jdbc.core.JdbcTemplate;

import javax.sql.DataSource;

import java.net.InetAddress;

import java.net.UnknownHostException;

public class Test {

private Client client = null;

private DataSource dataSource;

private JdbcTemplate jdbcTemplate;

public void setDataSource(DataSource dataSources) {

this.dataSource = dataSources;

this.jdbcTemplate = new JdbcTemplate(dataSource);

}

public Client getESClient() {

//集群ip

String host = "127.0.0.1";

//集群tcp端口,默认9300

int port = 9300;

//集群名称，配置里的cluster_name

String clusterName = "test_es";

Settings settings = Settings.builder()

.put("cluster.name", clusterName)

.put("client.transport.ping_timeout", "10s")

.build();

TransportClient client = new PreBuiltTransportClient(settings);

try {

//多节点的集群,在此处分别调用client.add..即可

client.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(host), port));

} catch (UnknownHostException e) {

e.printStackTrace();

}

return client;

}

}

需要添加验证的 (需要验证方提供鉴权文件，然后引入search-guard-ssl jar文件)

import org.elasticsearch.client.Client;

import org.elasticsearch.client.transport.TransportClient;

import org.elasticsearch.common.settings.Settings;

import org.elasticsearch.common.transport.InetSocketTransportAddress;

import org.elasticsearch.transport.client.PreBuiltTransportClient;

import org.springframework.jdbc.core.JdbcTemplate;

import com.floragunn.searchguard.ssl.SearchGuardSSLPlugin;

import javax.sql.DataSource;

import java.net.InetAddress;

import java.net.UnknownHostException;

public class Test {

private Client client = null;

private DataSource dataSource;

private JdbcTemplate jdbcTemplate;

public void setDataSource(DataSource dataSources) {

this.dataSource = dataSources;

this.jdbcTemplate = new JdbcTemplate(dataSource);

}

public Client getESClient() {

//集群ip

String host = "127.0.0.1";

//集群tcp端口,默认9300

int port = 9300;

//集群名称，配置里的cluster_name

String clusterName = "test_es";

//鉴权文件路径

String pathHome = "/home/test/";

//key文件名称

String keyFile = "";

//jks文件名称

String jksFile = "";

Settings settings = Settings.builder()

.put("cluster.name", clusterName)

.put("client.transport.ping_timeout", "10s")

.put("path.home",pathHome)

.put("searchguard.ssl.transport.enabled", true)

.put("searchguard.ssl.transport.keystore_filepath", keyFile)

.put("searchguard.ssl.transport.truststore_filepath", jksFile)

.put("searchguard.ssl.transport.enforce_hostname_verification", false)

.build();

TransportClient client = new PreBuiltTransportClient(settings);

try {

//多节点的集群,在此处分别调用client.add..即可

client = new PreBuiltTransportClient(settings,SearchGuardSSLPlugin.class)

.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(host), port));

} catch (UnknownHostException e) {

e.printStackTrace();

}

return client;

}

}