Spring4.3.5集成elasticsearch

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Spring4.3.5集成elasticsearch
环境：
jdk:1.8
elasticsearch:6.4.2
maven地址：

	 <dependency>
        <groupId>org.elasticsearch</groupId>
        <artifactId>elasticsearch</artifactId>
        <version>5.6.0</version>
    </dependency>
	
	<!-- transport客户端 -->
	<dependency>
        <groupId>org.elasticsearch.client</groupId>
        <artifactId>transport</artifactId>
        <version>5.6.0</version>
    </dependency>

注意：elasticsearch:6.4.2最低需要5.6.0的版本，否则使用java连接会报错。

下面开始与spring集成，这边使用注解的方式：
新建一个spring-context-elasticsearch.xml配置文件，为了扫描注解。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"  
    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:p="http://www.springframework.org/schema/p"  
    xmlns:context="http://www.springframework.org/schema/context"  
    xsi:schemaLocation="  
            http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd  
            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd  
            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd  
            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd">  
   <context:component-scan base-package="org.elasticsearch.spring">  
   </context:component-scan> 
</beans>

base-package=“org.elasticsearch.spring” 定义了要扫描的包，这个包下面最好只放与elasticsearch初始化相关的配置类。

package org.elasticsearch.spring;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;



@Configuration
public class SpringConfiguration {

	private static final Log LOG = LogFactory.getLog(SpringConfiguration.class);
	
    //bean的id为transportClient
    @Bean
    public TransportClientFactory transportClient(){
    	LOG.info("初始化TransportClientFactory");
    	TransportClientFactory transportClientFactory=new TransportClientFactory();
        transportClientFactory.setClusterName("elasticsearch");
        transportClientFactory.setHost("127.0.0.1");
        transportClientFactory.setPort(9300);
        return transportClientFactory;
    }
}




package org.elasticsearch.spring;

import java.net.InetAddress;

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.beans.factory.DisposableBean;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;

import com.esotericsoftware.minlog.Log;

public class TransportClientFactory implements FactoryBean<TransportClient>, InitializingBean, DisposableBean {

	private String clusterName;
	private String host;
	private int port;
	private TransportClient client;

	public void setClusterName(String clusterName) {
		this.clusterName = clusterName;
	}

	public void setHost(String host) {
		this.host = host;
	}

	public void setPort(int port) {
		this.port = port;
	}

	@Override
	public void destroy() throws Exception {
		if (client != null)
			client.close();

	}

	@Override
	public void afterPropertiesSet() throws Exception {
		Log.info("初始化TransportClientFactory");
		Settings settings = Settings.builder().put("cluster.name", this.clusterName).build();
		client = new PreBuiltTransportClient(settings)
				.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(this.host), this.port));
	}

	@Override
	public TransportClient getObject() throws Exception {
		return client;
	}

	@Override
	public Class<?> getObjectType() {
		return TransportClient.class;
	}

	@Override
	public boolean isSingleton() {
		return false;
	}

}

将以上2个类放在org.elasticsearch.spring包下就OK 了。