【ES系列四】——ESjdbc的封装

一、es的jdbc类

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package com.yunshi.index.dao.esdb;

import org.apache.log4j.Logger;
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 java.net.InetAddress;

/**
 * es连接数据库相关类
 * Created by mk on 2017/11/22.
 */
public class ElasticSearchJdbc {

    private static final Logger logger = Logger.getLogger("ElasticSearchJdbc");

    private  String cluster_name = null;// 实例名称
    private  String cluster_serverip = null;// elasticSearch服务器ip
    private  String indexname = null;// 索引名称
    private TransportClient client = null;

    public  String getCluster_name() {return cluster_name;}
    public  void setCluster_name(String cluster_name) {this.cluster_name = cluster_name;}
    public  String getCluster_serverip() {return cluster_serverip;}
    public  void setCluster_serverip(String cluster_serverip) {this.cluster_serverip = cluster_serverip;}
    public  String getIndexname() {return indexname;}
    public  void setIndexname(String indexname) {this.indexname = indexname;}

    private void init() {
        // 设置集群名称
        Settings settings = Settings.builder().put("cluster.name", cluster_name).build();
        // 创建client
        client = new PreBuiltTransportClient(settings);

        if (this.cluster_name == null || "".equals(this.cluster_name)) {
            throw new EsdbException("ES未配置实例名称！");
        }
        if (this.cluster_serverip == null || "".equals(this.cluster_serverip)) {
            throw new EsdbException("ES未配置服务器IP！");
        }
        if (this.indexname == null || "".equals(this.indexname)) {
            throw new EsdbException("ES未配置索引名称！");
        }

        try {
            // 增加地址和端口
            client.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(cluster_serverip), 9300));
        }catch (Exception e){
            logger.error("class : ElasticSearchJdbc --> method : getClient 创建ES客户端连接异常！");
            e.printStackTrace();
        }
    }

    /**
     * 返回一个ElasticSearch的连接客户端
     *
     * @return client
     */
    public TransportClient getClient() {
        if(client==null) {
            init();
        }
        return client;
    }
}
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二、spring.xml配置

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	<!--初始化ES配置并启动-->
	<bean id="ElasticSearchJdbc" class="com.yunshi.index.dao.esdb.ElasticSearchJdbc" init-method="init">
		<property name="cluster_name" value="${cluster_name}"/>
		<property name="indexname" value="${indexname}"/>
		<property name="cluster_serverip" value="${cluster_serverip}"/>
	</bean>
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三、es配置文件

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cluster_name=zhonghuayuntest
cluster_serverip=192.168.0.248
indexname=onair_resource
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四、总结

    虽然此博客内容简单，但是进行这样的抽取工作还是很有必要的！