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！！！