ElasticSearch60：Java api操作ElasticSearch5.2

1.创建Maven项目的时候，因为是公司内网，所以需要解决代理的问题，配置代理

2.创建Maven项目

3.配置pom.xml，引用jar包

注意：本文使用的ES是5.2版本的，所以下载的jar包必须在5.0以上，否则运行报错

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.h3c</groupId>
  <artifactId>es4j_test003</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>es4j_test003 Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>org.elasticsearch</groupId>
      <artifactId>elasticsearch</artifactId>
      <version>5.3.0</version>
    </dependency>
    <dependency>
      <groupId>org.elasticsearch.client</groupId>
      <artifactId>transport</artifactId>
      <version>5.3.0</version>
    </dependency>
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-api</artifactId>
      <version>2.7</version>
    </dependency>
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-core</artifactId>
      <version>2.7</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.1.3</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
    </dependency>
  </dependencies>
  <build>
    <finalName>es4j_test003</finalName>
  </build>
</project>

4.编码

创建package，并创建ElasticSearch4Java测试类

package com.ximua.es4j;

import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.transport.client.PreBuiltTransportClient;
import org.junit.Before;
import org.junit.Test;

import java.net.InetAddress;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class ElasticSearch4Java {
    private TransportClient client;
    private IndexRequest source;

    /**
     * 获取连接, 第一种方式
     * @throws Exception
     */
    @Before
    public void before() throws Exception {
        //设置集群名称
        Map<String, String> map = new HashMap<String, String>();
        map.put("cluster.name", "elasticsearch");
        Settings settings = Settings.builder().put(map).build();
        //创建客户端client
        client =  new PreBuiltTransportClient(settings)
                .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), Integer.parseInt("9300")));
    }


    /**
     * 查看集群信息
     */
    @Test
    public void NodeHealthInfoTest() {
        List<DiscoveryNode> nodes = client.connectedNodes();
        for (DiscoveryNode node : nodes) {
            System.out.println(node.getHostAddress());
        }
    }

    //api 查询
    @Test
    public void SearchDocumentTest(){
        GetResponse response = client.prepareGet("website","article","1").execute().actionGet();
        String result = response.getSourceAsString();
        System.out.println(result);
    }
}

执行结果：

1）查看集群IP地址：

127.0.0.1

2）查询

{ "title":"second article", "content":"this is my second article", "post_date":"2017-01-01", "author_id":100 }