Elasticsearch java api 基本使用之增、删、改、查

主要参考el的java官方文档：https://www.elastic.co/guide/en/elasticsearch/client/java-api/1.7/generate.html

一篇博客：http://www.cnblogs.com/huangfox/p/3543134.html

Elasticsearch官方指南：http://es.xiaoleilu.com/010_Intro/30_Tutorial_Search.html

@xuguokun1986的代码

主要概念

明白如下几个名词，就像上一篇中提到的那样，索引（indices）->数据库、类型（types）->表、文档（documents）->行、字段（Fields）->列；其中->后面代表的是基本的关系型数据库的表。

基本的依赖的jar包，在elasticsearch文件夹下对应的lib的文件夹中含有；其中json的文件依赖jar包的下载地址http://wiki.fasterxml.com/JacksonDownload。

遇到的问题及解决方法

client = new TransportClient().addTransportAddress(new InetSocketTransportAddress(“192.168.203.148”, 9200));

报错No node available

解决方法：这里9200 改写成9300

代码

创建index并插入数据

代码如下所示：

<pre name="code" class="html"><pre name="code" class="html">package com.asia.myTest;import java.io.IOException;import net.sf.json.JSONObject;import org.elasticsearch.action.*;import org.apache.lucene.search.TermQuery;import org.codehaus.jackson.map.ObjectMapper;import org.codehaus.jackson.map.util.JSONPObject;import org.elasticsearch.ElasticsearchException;import org.elasticsearch.action.count.CountResponse;import org.elasticsearch.action.delete.DeleteResponse;import org.elasticsearch.action.get.GetResponse;import org.elasticsearch.action.index.IndexRequestBuilder;import org.elasticsearch.action.index.IndexResponse;import org.elasticsearch.action.search.SearchResponse;import org.elasticsearch.action.search.SearchType;import org.elasticsearch.client.Client;import org.elasticsearch.client.transport.TransportClient;import org.elasticsearch.common.transport.InetSocketTransportAddress;import org.elasticsearch.common.xcontent.XContentFactory;import org.elasticsearch.index.query.FilterBuilders;import org.elasticsearch.index.query.QueryBuilder;import org.elasticsearch.index.query.QueryBuilders;import org.elasticsearch.index.query.QueryBuilders.*;import static org.elasticsearch.index.query.FilterBuilders.*;public class ESClient {private Client client;public void init(){//on start相当于连接集群client = new TransportClient(). addTransportAddress(new InetSocketTransportAddress("192.168.203.148", 9300));}public void close(){//on shutdown 断开集群client.close();}    /*     *创建index，把其中的文档转化为json的格式存储    */public void createIndex() {for (int i=0; i<=200;i++){IndexResponse indexResponse = null;try {indexResponse = client.prepareIndex("logs", "log2015",i+"")                            .setSource(                            XContentFactory.jsonBuilder().startObject()                                .field("sourceIp" , "10.10.16."+i)                                .field("sourcePort" , 389)                                .field("destIp" , "114.114.114.114")                                .endObject())                                .execute()                                .actionGet();} catch (ElasticsearchException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}System.out.println("responseIsCreated: "+indexResponse.isCreated());}System.out.println("it is ok ！");}/* * Get index 获取文档相当于读取数据库的一行数据 */public void get(){GetResponse getresponse = client.prepareGet("logs", "log2015", "1") .execute() .actionGet();System.out.println(getresponse.getSourceAsString());}/* *Delete index 删除文档，相当于删除一行数据 */public void delete(){DeleteResponse deleteresponse = client.prepareDelete("logs", "log2015","150")   .execute()   .actionGet();System.out.println(deleteresponse.getVersion());}/* *search 查询相当于关系型数据库的查询 */public void search(){SearchResponse searchresponse = client.prepareSearch("logs")  .setTypes("log2015")  .setSearchType(SearchType.DFS_QUERY_THEN_FETCH)  .setQuery(QueryBuilders.termQuery("destIp", "114.114.114.114"))  .setPostFilter(  FilterBuilders.rangeFilter("sourceIp")  .from("10.10.16.57")  .to("10.10.16.68")  )  .setFrom(0)  .setSize(3).setExplain(true)  .execute().actionGet();System.out.println(searchresponse.toString()); //JSONObject jsonObject = JSONObject.fromObject(searchresponse.toString());//JSONObject hites = (JSONObject) jsonObject.get("hits");//System.out.println(hites.get("hits").toString());}/* *Count api 统计分析结果 */public void count(){CountResponse countresponse = client.prepareCount("website").setQuery(QueryBuilders.termQuery("_type", "asia")).execute().actionGet();System.out.println(countresponse.getCount());}    public static void main(String[] args){    ESClient client = new ESClient();    client.init();    //client.createIndex();    //client.get();    //client.delete();    //client.search();    client.count();    client.close();            }}

控制台运行过程：

.......

responseIsCreated: true

responseIsCreated: true
responseIsCreated: true
responseIsCreated: true
responseIsCreated: true
responseIsCreated: true
responseIsCreated: true
it is ok ！

通过CURL命令查看基本结果,插入数据成功：