ElasticSearch(3)--使用Java客戶端搜索文檔

接着上一節的

使用java客戶端，去es中根據文檔的id，獲取整個文檔

package com.es.demo;

import java.net.InetAddress;

import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * 搜索指定文檔
 * 
 * @author Beck
 * @date 2018年2月6日
 */
public class TestES2 {
	private static final String HOST = "127.0.0.1";
	private static final int PORT = 9300;
	
	private static final ObjectMapper MAPPER = new ObjectMapper();
	private TransportClient client = null;
	
	// 搜索單個文檔,根據id
	@Test
	public void getSingleDocument(){
		GetResponse response = client.prepareGet("eshop", "product", "AWFlwM2XrUhLs_HfwSw1")
		.setOperationThreaded(false)
		.get();
		
		// 打印結果
		String id = response.getId();
		String sourceAsString = response.getSourceAsString();
		
		System.out.println(id);
		System.out.println(sourceAsString);
	}
	
	// 獲取客戶端
	@Before
	public void getClient() throws Exception{
		client = TransportClient.builder()
		.build()
		.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(HOST), PORT));
	}
	
	// 關閉客戶端
	@After
	public void closeClient(){
		if (this.client != null){
			this.client.close();
		}
	}
}