Elasticsearch版本客户端与服务端版本不一致问题

来源：互联网发布：mac好用的office软件编辑：程序博客网时间：2024/06/07 00:47

初学ES，总是遇到一些小问题。今天遇到的问题是，在java中pom.xml导入了

<dependency>  <groupId>org.elasticsearch</groupId>  <artifactId>elasticsearch</artifactId>  <version>2.3.3</version></dependency>

的jar包
在创建client连接时参考api写的代码如下：

Client client = TransportClient.builder().build()                    .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("127.0.0.1"), 9300));

运行时一直卡住，不报错也连接不成功。
经过排查，是因为我电脑上安装的Elasticsearch是1.7版本的。2.3版本和1.7版本里面的API不太一样，高版本的客户端不能调用低版本的服务端。后来我把pom.xml的引用改为：

<dependency>     <groupId>org.elasticsearch</groupId>     <artifactId>elasticsearch</artifactId>     <version>1.7.1</version></dependency>

就可以运行了。
下面是1.7版本的代码：

/** *  */package com.odianyun.steel.test.es;import java.io.IOException;import java.net.InetAddress;import java.util.ArrayList;import java.util.List;import org.elasticsearch.action.index.IndexResponse;import org.elasticsearch.client.Client;import org.elasticsearch.client.transport.TransportClient;import org.elasticsearch.common.transport.InetSocketTransportAddress;import org.elasticsearch.common.xcontent.XContentBuilder;import org.elasticsearch.common.xcontent.XContentFactory;/** * @author diaoxingguo * */public class Test {    public static void main(String[] args) {        //创建客户端        try {            Client client = new TransportClient().addTransportAddress(new InetSocketTransportAddress("127.0.0.1", 9300));            System.out.println("连接成功");            List<String> list = getData();            for(String str : list){                IndexResponse response = client.prepareIndex("blog","article").setSource(str).get();                if(response.isCreated()){                    System.out.println("创建成功！");                }            }            client.close();        } catch (Exception e) {            e.printStackTrace();        }    }    public static List<String> getData(){        List<String> list = new ArrayList<String>();        String blog1 = model2Json(new Blog(1,"第1个title","2016-10-14 10:31","第1个content"));        String blog2 = model2Json(new Blog(2,"第2个title","2016-10-14 10:32","第2一个content"));        String blog3 = model2Json(new Blog(3,"第3个title","2016-10-14 10:33","第3个content"));        String blog4 = model2Json(new Blog(4,"第4个title","2016-10-14 10:34","第4个content"));        String blog5 = model2Json(new Blog(5,"第5个title","2016-10-14 10:35","第5个content"));        String blog6 = model2Json(new Blog(6,"第6个title","2016-10-14 10:36","6个content"));        String blog7 = model2Json(new Blog(7,"第7个title","2016-10-14 10:37","第7个content"));        String blog8 = model2Json(new Blog(8,"第8个title","2016-10-14 10:36","8个content"));        list.add(blog1);        list.add(blog2);        list.add(blog3);        list.add(blog4);        list.add(blog5);        list.add(blog6);        list.add(blog7);        list.add(blog8);        return list;    }     public static String model2Json(Blog blog) {            String jsonData = null;            try {                XContentBuilder jsonBuild = XContentFactory.jsonBuilder();                jsonBuild.startObject()                            .field("id", blog.getId())                            .field("title", blog.getTitle())                            .field("posttime", blog.getPostTime())                            .field("content",blog.getContent())                        .endObject();                jsonData = jsonBuild.string();                System.out.println(jsonData);            } catch (IOException e) {                e.printStackTrace();            }            return jsonData;        }}

0 0