Java操作ElasticSearch之创建索引

来源：互联网发布：平面美工招聘编辑：程序博客网时间：2024/06/04 18:51
ElasticSearch客户端提供了多种方式的数据创建方式，包括json串,map,内置工具；我们正式开始一般用json格式，借助json工具框架，比如gson ,json-lib,fastjson等等；

我们给下实例：
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package com.java1234.es;
 
import java.net.InetAddress;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
 
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.transport.client.PreBuiltTransportClient;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
 
import com.google.gson.JsonObject;
 
/**
 * ElasticSearch客户端连接服务器测试
 * @author Administrator
 *
 */
public class EsTest {
 
    private static String host="192.168.1.108"; // 服务器地址
     
    private static int port=9300; // 端口
     
    private TransportClient client=null;
     
    /**
     * 获取连接
     * @return
     */
    @SuppressWarnings({ "unchecked", "resource" })
    @Before
    public void getCient()throws Exception{
       client = new PreBuiltTransportClient(Settings.EMPTY)
                   .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(EsTest.host), EsTest.port));
    }
     
    /**
     * 关闭连接
     * @param client
     */
    @After
    public void close(){
        if(client!=null){
            client.close();
        }
    }
     
    /**
     * 添加索引
     */
    @Test
    public void testIndex()throws Exception{
        IndexResponse response =client.prepareIndex("twitter", "tweet", "1")
            .setSource(XContentFactory.jsonBuilder()
                    .startObject()
                    .field("user", "kimchy")
                    .field("postDate", new Date())
                    .field("message", "trying out Elasticsearch")
                .endObject()
                    )
            .get();
        System.out.println("索引名称："+response.getIndex());
        System.out.println("类型："+response.getType());
        System.out.println("文档ID："+response.getId()); // 第一次使用是1
        System.out.println("当前实例状态："+response.status());
    }
     
    /**
     * 添加索引
     */
    @Test
    public void testIndex2()throws Exception{
        String json = "{" +
                "\"user\":\"kimchy\"," +
                "\"postDate\":\"2013-01-30\"," +
                "\"message\":\"trying out Elasticsearch\"" +
            "}";
         
        IndexResponse response =client.prepareIndex("weibo", "tweet")
            .setSource(json,XContentType.JSON)
            .get();
        System.out.println("索引名称："+response.getIndex());
        System.out.println("类型："+response.getType());
        System.out.println("文档ID："+response.getId()); // 第一次使用是1
        System.out.println("当前实例状态："+response.status());
    }
     
    /**
     * 添加索引
     */
    @Test
    public void testIndex3()throws Exception{
        Map<String, Object> json = new HashMap<String, Object>();
        json.put("user","kimchy");
        json.put("postDate",new Date());
        json.put("message","trying out Elasticsearch");
         
        IndexResponse response =client.prepareIndex("qq", "tweet")
            .setSource(json)
            .get();
        System.out.println("索引名称："+response.getIndex());
        System.out.println("类型："+response.getType());
        System.out.println("文档ID："+response.getId()); // 第一次使用是1
        System.out.println("当前实例状态："+response.status());
    }
     
    /**
     * 添加索引
     */
    @Test
    public void testIndex4()throws Exception{
        JsonObject jsonObject=new JsonObject();
        jsonObject.addProperty("user", "kimchy");
        jsonObject.addProperty("postDate", "1989-11-11");
        jsonObject.addProperty("message", "trying out Elasticsearch");
         
        IndexResponse response =client.prepareIndex("qq", "tweet")
            .setSource(jsonObject.toString(),XContentType.JSON)
            .get();
        System.out.println("索引名称："+response.getIndex());
        System.out.println("类型："+response.getType());
        System.out.println("文档ID："+response.getId()); // 第一次使用是1
        System.out.println("当前实例状态："+response.status());
    }
     
}
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