當前最新版本爲:0.20.6
http://www.elasticsearch.org/download/
官方視頻教程
http://www.elasticsearch.org/videos/
Window環境
下載完解開有以下個包:
bin是運行的腳本,config是設置文件,lib是放依賴的包。
啓動解壓目錄下的bin名稱的文件夾,雙擊elasticsearch.bat文件,就可以啓動elasticsearch,啓動成功界面如下:
啓動成功後,會在解壓目錄下增加2個文件件,data用於數據存儲, logs用於日誌記錄,可以自己創建plugins目錄中用於放置自己的插件。
此時可以在瀏覽器中輸入: http://localhost:9200/
"ok" : true,
"status" : 200,
"name" : "Glob Herman",
"version" : { "number" : "0.20.6", "snapshot_build" : false }, "tagline" : "You Know, for Search" }
出現上面結果,表示成功啓動!
集成分詞器的ElasticSearch下載地址:
https://github.com/medcl/elasticsearch-rtf
Java模擬簡單搜索
實體類
package org.dennisit.entity;
/**
*
*
* @version : 1.0
*
* @author : 蘇若年 <a href="mailto:[email protected]">發送郵件</a>
*
* @since : 1.0 創建時間: 2013-4-8 下午04:51:03
*
* @function: TODO
*
*/
public class Medicine {
private Integer id;
private String name;
private String function;
public Medicine() {
super();
}
public Medicine(Integer id, String name, String function) {
super();
this.id = id;
this.name = name;
this.function = function;
}
//getter and setter ()
}
模擬數據
package org.dennisit.entity;
import java.util.ArrayList;
import java.util.List;
import org.dennisit.util.JsonUtil;
/**
*
*
* @version : 1.0
*
* @author : 蘇若年 <a href="mailto:[email protected]">發送郵件</a>
*
* @since : 1.0 創建時間: 2013-4-8 上午11:38:15
*
* @function: TODO
*
*/
public class DataFactory {
public static DataFactory dataFactory = new DataFactory();
private DataFactory(){
}
public DataFactory getInstance(){
return dataFactory;
}
public static List<String> getInitJsonData(){
List<String> list = new ArrayList<String>();
String data1 = JsonUtil.obj2JsonData(new Medicine(1,"銀花 感冒 顆粒","功能主治:銀花感冒顆粒 ,頭痛,清熱,解表,利咽。"));
String data2 = JsonUtil.obj2JsonData(new Medicine(2,"感冒 止咳糖漿","功能主治:感冒止咳糖漿,解表清熱,止咳化痰。"));
String data3 = JsonUtil.obj2JsonData(new Medicine(3,"感冒靈顆粒","功能主治:解熱鎮痛。頭痛 ,清熱。"));
String data4 = JsonUtil.obj2JsonData(new Medicine(4,"感冒 靈膠囊","功能主治:銀花感冒顆粒 ,頭痛,清熱,解表,利咽。"));
String data5 = JsonUtil.obj2JsonData(new Medicine(5,"仁和 感冒 顆粒","功能主治:疏風清熱,宣肺止咳,解表清熱,止咳化痰。"));
list.add(data1);
list.add(data2);
list.add(data3);
list.add(data4);
list.add(data5);
return list;
}
}
應用工具類
package org.dennisit.util;
import java.io.IOException;
import org.dennisit.entity.Medicine;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
/**
*
*
* @version : 1.0
*
* @author : 蘇若年 <a href="mailto:[email protected]">發送郵件</a>
*
* @since : 1.0 創建時間: 2013-4-8 上午11:34:56
*
* @function: TODO
*
*/
public class JsonUtil {
/**
* 實現將實體對象轉換成json對象
* @param medicine Medicine對象
* @return
*/
public static String obj2JsonData(Medicine medicine){
String jsonData = null;
try {
//使用XContentBuilder創建json數據
XContentBuilder jsonBuild = XContentFactory.jsonBuilder();
jsonBuild.startObject()
.field("id",medicine.getId())
.field("name", medicine.getName())
.field("funciton",medicine.getFunction())
.endObject();
jsonData = jsonBuild.string();
System.out.println(jsonData);
} catch (IOException e) {
e.printStackTrace();
}
return jsonData;
}
}
ElasticSearch核心搜索模擬類
package org.dennisit.elastic.process;
import java.util.ArrayList;
import java.util.List;
import org.dennisit.entity.DataFactory;
import org.dennisit.entity.Medicine;
import org.elasticsearch.action.index.IndexRequestBuilder;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
/**
*
*
* @version : 1.0
*
* @author : 蘇若年 <a href="mailto:[email protected]">發送郵件</a>
*
* @since : 1.0 創建時間: 2013-4-8 上午11:34:04
*
* @function: TODO
*
*/
public class ElasticSearchHandler {
private Client client;
public ElasticSearchHandler(){
//使用本機做爲節點
this("127.0.0.1");
}
public ElasticSearchHandler(String ipAddress){
//集羣連接超時設置
/*
Settings settings = ImmutableSettings.settingsBuilder().put("client.transport.ping_timeout", "10s").build();
client = new TransportClient(settings);
*/
client = new TransportClient().addTransportAddress(new InetSocketTransportAddress(ipAddress, 9300));
}
/**
* 建立索引,索引建立好之後,會在elasticsearch-0.20.6\data\elasticsearch\nodes\0創建所以你看
* @param indexName 爲索引庫名,一個es集羣中可以有多個索引庫。 名稱必須爲小寫
* @param indexType Type爲索引類型,是用來區分同索引庫下不同類型的數據的,一個索引庫下可以有多個索引類型。
* @param jsondata json格式的數據集合
*
* @return
*/
public void createIndexResponse(String indexname, String type, List<String> jsondata){
//創建索引庫 需要注意的是.setRefresh(true)這裏一定要設置,否則第一次建立索引查找不到數據
IndexRequestBuilder requestBuilder = client.prepareIndex(indexname, type).setRefresh(true);
for(int i=0; i<jsondata.size(); i++){
requestBuilder.setSource(jsondata.get(i)).execute().actionGet();
}
}
/**
* 創建索引
* @param client
* @param jsondata
* @return
*/
public IndexResponse createIndexResponse(String indexname, String type,String jsondata){
IndexResponse response = client.prepareIndex(indexname, type)
.setSource(jsondata)
.execute()
.actionGet();
return response;
}
/**
* 執行搜索
* @param queryBuilder
* @param indexname
* @param type
* @return
*/
public List<Medicine> searcher(QueryBuilder queryBuilder, String indexname, String type){
List<Medicine> list = new ArrayList<Medicine>();
SearchResponse searchResponse = client.prepareSearch(indexname).setTypes(type)
.setQuery(queryBuilder)
.execute()
.actionGet();
SearchHits hits = searchResponse.hits();
System.out.println("查詢到記錄數=" + hits.getTotalHits());
SearchHit[] searchHists = hits.getHits();
if(searchHists.length>0){
for(SearchHit hit:searchHists){
Integer id = (Integer)hit.getSource().get("id");
String name = (String) hit.getSource().get("name");
String function = (String) hit.getSource().get("funciton");
list.add(new Medicine(id, name, function));
}
}
return list;
}
public static void main(String[] args) {
ElasticSearchHandler esHandler = new ElasticSearchHandler();
List<String> jsondata = DataFactory.getInitJsonData();
String indexname = "indexdemo";
String type = "typedemo";
esHandler.createIndexResponse(indexname, type, jsondata);
//查詢條件
QueryBuilder queryBuilder = QueryBuilders.fieldQuery("name", "感冒");
/*QueryBuilder queryBuilder = QueryBuilders.boolQuery()
.must(QueryBuilders.termQuery("id", 1));*/
List<Medicine> result = esHandler.searcher(queryBuilder, indexname, type);
for(int i=0; i<result.size(); i++){
Medicine medicine = result.get(i);
System.out.println("(" + medicine.getId() + ")藥品名稱:" +medicine.getName() + "\t\t" + medicine.getFunction());
}
}
}
啓動ElasticSearch(window下bin/elasticsearch.bat)
程序運行前,默認的nodes目錄下沒有內容,運行程序後會建立如下目錄
控制檯輸出信息
{"id":1,"name":"銀花 感冒 顆粒","funciton":"功能主治:銀花感冒顆粒 ,頭痛,清熱,解表,利咽。"}
{"id":2,"name":"感冒 止咳糖漿","funciton":"功能主治:感冒止咳糖漿,解表清熱,止咳化痰。"}
{"id":3,"name":"感冒靈顆粒","funciton":"功能主治:解熱鎮痛。頭痛 ,清熱。"}
{"id":4,"name":"感冒 靈膠囊","funciton":"功能主治:銀花感冒顆粒 ,頭痛,清熱,解表,利咽。"}
{"id":5,"name":"仁和 感冒 顆粒","funciton":"功能主治:疏風清熱,宣肺止咳,解表清熱,止咳化痰。"}
查詢到記錄數=5
(4)藥品名稱:感冒 靈膠囊 功能主治:銀花感冒顆粒 ,頭痛,清熱,解表,利咽。
(1)藥品名稱:銀花 感冒 顆粒 功能主治:銀花感冒顆粒 ,頭痛,清熱,解表,利咽。
(2)藥品名稱:感冒 止咳糖漿 功能主治:感冒止咳糖漿,解表清熱,止咳化痰。
(3)藥品名稱:感冒靈顆粒 功能主治:解熱鎮痛。頭痛 ,清熱。
(5)藥品名稱:仁和 感冒 顆粒 功能主治:疏風清熱,宣肺止咳,解表清熱,止咳化痰。
集羣管理工具Head查看信息
附錄:
ElasticSearch安裝插件elasticsearch-head插件
安裝完之後,在lasticsearch-0.20.6\plugins\目錄下就多了head插件
直接打開目錄中的index.html文件即可進入管理工具