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ES之八:elasticsearch2.x下的JAVA API示例
D:\soft\elasticsearch\elasticsearch-2.1.0\lib
package com.dxz.es;import java.net.InetAddress;import java.net.UnknownHostException;import java.util.Map;import java.util.concurrent.TimeUnit;import org.elasticsearch.action.ListenableActionFuture;import org.elasticsearch.action.delete.DeleteResponse;import org.elasticsearch.action.get.GetResponse;import org.elasticsearch.action.index.IndexResponse;import org.elasticsearch.action.search.SearchResponse;import org.elasticsearch.action.search.SearchType;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.index.query.QueryBuilders;import org.elasticsearch.script.Script;import org.elasticsearch.search.SearchHit;import com.alibaba.fastjson.JSON;import com.dxz.es.model.LogModel;import com.google.common.collect.Maps;public class ElkTest {// private static final String CLUSTER_NAME = "cluster_name"; public static final String CLUSTER_NAME = "elasticsearch"; //实例名称 private static final String IP = "127.0.0.1"; //private static final String IP = "192.168.0.29"; private static final int PORT = 9300; //端口 //1.设置集群名称:默认是elasticsearch,并设置client.transport.sniff为true,使客户端嗅探整个集群状态,把集群中的其他机器IP加入到客户端中 /* //对ES1.6有效 private static Settings settings = ImmutableSettings .settingsBuilder() .put("cluster.name",CLUSTER_NAME) .put("client.transport.sniff", true) .build(); */ //对ES2.0有效 private static Settings settings = Settings.settingsBuilder() .put("cluster.name",CLUSTER_NAME) .put("client.transport.sniff", true) .build(); //创建私有对象 private static TransportClient client; //反射机制创建单例的TransportClient对象 ES1.6版本 // static { // try { // Class<?> clazz = Class.forName(TransportClient.class.getName()); // Constructor<?> constructor = clazz.getDeclaredConstructor(Settings.class); // constructor.setAccessible(true); // client = (TransportClient) constructor.newInstance(settings); // client.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(IP), PORT)); // } catch (Exception e) { // e.printStackTrace(); // } // } //ES2.0版本 static { try { client = TransportClient.builder().settings(settings).build() .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(IP), PORT)); } catch (UnknownHostException e) { e.printStackTrace(); } } //取得实例 public static synchronized TransportClient getTransportClient(){ return client; } //为集群添加新的节点 public static synchronized void addNode(String name){ try { client.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(name),9300)); } catch (UnknownHostException e) { e.printStackTrace(); } } //删除集群中的某个节点 public static synchronized void removeNode(String name){ try { client.removeTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(name),9300)); } catch (UnknownHostException e) { e.printStackTrace(); } } public static void main(String args[]){ String index="logstash-2016.02.16"; String type="aaa"; //insert(); //search(); //get(); update(index, type, "1"); //delete(); client.close(); } public static void search() { String index="logstash-2016.02.16"; String type="logs"; SearchResponse response=ElkTest.getTransportClient().prepareSearch(index)//设置要查询的索引(index) .setSearchType(SearchType.DFS_QUERY_THEN_FETCH) .setTypes(type)//设置type, 这个在建立索引的时候同时设置了, 或者可以使用head工具查看 .setQuery(QueryBuilders.matchQuery("message", "Accept")) //在这里"message"是要查询的field,"Accept"是要查询的内容 .setFrom(0) .setSize(10) .setExplain(true) .execute() .actionGet(); System.out.println("9666666666666"); for(SearchHit hit:response.getHits()){ System.out.println(hit.getSourceAsString()); } } public static void insert() { String json = JSON.toJSONString(new LogModel()); //在这里创建我们要索引的对象 IndexResponse response = ElkTest.getTransportClient().prepareIndex("logstash-2016.02.16","logs")//.prepareIndex("twitter", "tweet") //必须为对象单独指定ID .setId("1") .setSource(json) .execute() .actionGet(); //多次index这个版本号会变 System.out.println("response.version():"+response.getVersion()); } public static void update(String index, String type, String id) { Map<String, Object> params = Maps.newHashMap(); params.put("ntitle", "ElasticSearch Server Book"); UpdateResponse response = client.prepareUpdate("library", "book", "2") .execute().actionGet(); } public static void get() { GetResponse response = client.prepareGet("twitter", "tweet", "1") .execute().actionGet(); System.out.println("response.getId():"+response.getId()); System.out.println("response.getSourceAsString():"+response.getSourceAsString()); } public static void delete() { //在这里创建我们要索引的对象 DeleteResponse response = client.prepareDelete("twitter", "tweet", "1") .execute().actionGet(); System.out.println(response.getId()); System.out.println(JSON.toJSONString(response.getHeaders())); }}
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ES之八:elasticsearch2.x下的JAVA API示例
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