ElasticSearch（三）：Java操作ElasticSearch索引之CRUD

package com.gxy.ESChap01;

import java.net.InetAddress;
import java.util.HashMap;
import java.util.Map;

import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.action.update.UpdateResponse;
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;


public class ESIndex {
    
    private static String host="192.168.56.3"; // 服务器地址
    private static int port=9300; // 端口
    
    private TransportClient client=null;
    
    
    //获取客户端
    @SuppressWarnings({ "resource", "unchecked" })
    @Before
    public void getClient() throws Exception {
        try {
            client = new PreBuiltTransportClient(Settings.EMPTY)
                    .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(host),port));
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    
    //关闭客户端
    @After
    public void close() {
        if(client!=null) {
            client.close();
        }
    }
    /***
     * 创建索引，添加文档
     * @throws Exception 
     */
    @Test
    public void testIndex() throws Exception {
        IndexResponse response=client.prepareIndex("book","java","1")
                .setSource(XContentFactory.jsonBuilder()
                        .startObject()
                        .field("name","MySQL从入门到删库跑路")
                        .field("publishDate","2012-11-11")
                        .field("price",100)
                        .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());
        System.out.println("当前实例状态："+response.status());
        
    }
    /**
     * 添加文档，创建索引
     */
    @Test
    public void TestIndex2() {
        JsonObject jsonObiect=new JsonObject();
        jsonObiect.addProperty("name", "java从入门到放弃");
        jsonObiect.addProperty("publishDate", "2018-05-06");
        jsonObiect.addProperty("price", 62);
        System.out.println(jsonObiect);
        IndexResponse response=client.prepareIndex("book", "java", "2")
                .setSource(jsonObiect.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());
        System.out.println("当前实例状态："+response.status());
        
    }
    
    /**
     * 根据ID获取文档
     */
    @Test
    public void testGetById() {
        GetResponse response=client.prepareGet("book","java","1").get();
        System.out.println(response.getSourceAsString());
    }
    /***
     * 根据ID修改文档
     * @throws Exception 
     * @throws InterruptedException 
     */
    @Test
    public void testUpdate() throws InterruptedException, Exception {
        UpdateRequest request=new UpdateRequest("book","java","1");
        Map<String,Object> source = new HashMap<String, Object>();
        source.put("name", "python网络爬虫");
        source.put("publishDate", "2012-11-12");
        source.put("price", 102);
        request.doc(source);
        UpdateResponse response=client.update(request).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());
        System.out.println("当前实例状态："+response.status());
    }
    /**
     * 根据ID删除文档
     */
    @Test
    public void testDelete() {
        DeleteResponse response=client.prepareDelete("book","java","1").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());
        System.out.println("当前实例状态："+response.status());
    }
}

注意：ElasticSearch中通过HTTP请求的端口为9200，通过Java API 请求的端口为9300！！！