elasticsearch5.4的java api

0、先说一个题外话，安装jar包到maven仓库

1、 创建maven项目,要把create a simple project勾选上

2、 配置pom.xml。
这步很重要，由于要使用spring boot，所以这里要添加

  <properties>    <elasticsearch.version>5.4.3</elasticsearch.version></properties>

Spring boot的配置

  <parent>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-parent</artifactId>    <version>1.5.4.RELEASE</version></parent><dependency>     <groupId>org.springframework.boot</groupId>     <artifactId>spring-boot-starter-web</artifactId></dependency>

由于使用了x-pack管理elasticsearch，所以参见官网:

https://www.elastic.co/guide/en/x-pack/5.4/api-java.html

  <repositories>      <!-- add the elasticsearch repo -->      <repository>         <id>elasticsearch-releases</id>         <url>https://artifacts.elastic.co/maven</url>         <releases>            <enabled>true</enabled>         </releases>         <snapshots>            <enabled>false</enabled>         </snapshots>      </repository> </repositories>    <dependency>        <groupId>org.elasticsearch.client</groupId>        <artifactId>x-pack-transport</artifactId>        <version>5.4.3</version>   </dependency>

Elasticsearch的配置

    <dependency>        <groupId>org.elasticsearch.client</groupId>        <artifactId>transport</artifactId>        <version>5.4.3</version>    </dependency>    <dependency>        <groupId>org.apache.logging.log4j</groupId>        <artifactId>log4j-api</artifactId>        <version>2.8.2</version><!--$NO-MVN-MAN-VER$-->    </dependency>    <dependency>        <groupId>org.apache.logging.log4j</groupId>        <artifactId>log4j-core</artifactId>        <version>2.8.2</version><!--$NO-MVN-MAN-VER$-->  </dependency>

3、 创建源码

package org.cma.hlj.bigdata.controller;import java.net.InetAddress;import org.elasticsearch.action.admin.cluster.health.ClusterHealthResponse;import org.elasticsearch.action.get.GetResponse;import org.elasticsearch.client.transport.TransportClient;import org.elasticsearch.cluster.health.ClusterHealthStatus;import org.elasticsearch.cluster.health.ClusterIndexHealth;import org.elasticsearch.common.settings.Settings;import org.elasticsearch.common.transport.InetSocketTransportAddress;import org.elasticsearch.xpack.client.PreBuiltXPackTransportClient;public class Test {     public static void main(String[] args){         Settings set=Settings.builder().put("cluster.name","cmabd")                 .put("xpack.security.transport.ssl.enabled",false)                 .put("xpack.security.user", "xxx:xxx")                 .put("client.transport.sniff",true).build();         TransportClient  client=null;         try{             client=new PreBuiltXPackTransportClient(set)                .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("10.96.xx.xx"), 9300))                .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("10.96.xx.xx"), 9300));             ClusterHealthResponse healths = client.admin().cluster().prepareHealth().get();             String clusterName = healths.getClusterName();             int numberOfDataNodes = healths.getNumberOfDataNodes();             int numberOfNodes = healths.getNumberOfNodes();             System.out.println(clusterName+" "+numberOfDataNodes+" "+numberOfNodes);             for (ClusterIndexHealth health : healths.getIndices().values()) {                     String index = health.getIndex();                                           int numberOfShards = health.getNumberOfShards();                            int numberOfReplicas = health.getNumberOfReplicas();                        ClusterHealthStatus status = health.getStatus();                    System.out.println(index+" "+numberOfShards+" "+numberOfReplicas+" "+status);                }             GetResponse response = client.prepareGet("cts_recv", "comlog", "AV01rfXRF3gNro0o5jWE").get();             System.out.println(response);         }         catch(Exception e)         {         }         finally{             client.close();         }     }}

4、 注意事项
Jdk的版本一定要8以上，要不然会报错。