[转载]基于Luence的分布式搜索引擎ElasticSearch搜索实例演示(Java API)
package org.dennisit.entity;/** * * * @version : 1.0 * * @author : 苏若年 <a href="mailto:DennisIT@163.com">发送邮件</a> * * @since : 1.0 创建时间: 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 ()}
package org.dennisit.entity;import java.util.ArrayList;import java.util.List;import org.dennisit.util.JsonUtil;/** * * * @version : 1.0 * * @author : 苏若年 <a href="mailto:DennisIT@163.com">发送邮件</a> * * @since : 1.0 创建时间: 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,"银花 感冒 颗粒","功能主治:银花感冒颗粒 ,头痛,清热,解表,利咽。")); String data2 = JsonUtil.obj2JsonData(new Medicine(2,"感冒 止咳糖浆","功能主治:感冒止咳糖浆,解表清热,止咳化痰。")); String data3 = JsonUtil.obj2JsonData(new Medicine(3,"感冒灵颗粒","功能主治:解热镇痛。头痛 ,清热。")); String data4 = JsonUtil.obj2JsonData(new Medicine(4,"感冒 灵胶囊","功能主治:银花感冒颗粒 ,头痛,清热,解表,利咽。")); String data5 = JsonUtil.obj2JsonData(new Medicine(5,"仁和 感冒 颗粒","功能主治:疏风清热,宣肺止咳,解表清热,止咳化痰。")); list.add(data1); list.add(data2); list.add(data3); list.add(data4); list.add(data5); return list; }}
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 : 苏若年 <a href="mailto:DennisIT@163.com">发送邮件</a> * * @since : 1.0 创建时间: 2013-4-8 上午11:34:56 * * @function: TODO * */public class JsonUtil { /** * 实现将实体对象转换成json对象 * @param medicine Medicine对象 * @return */ public static String obj2JsonData(Medicine medicine){ String jsonData = null; try { //使用XContentBuilder创建json数据 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; }}
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 : 苏若年 <a href="mailto:DennisIT@163.com">发送邮件</a> * * @since : 1.0 创建时间: 2013-4-8 上午11:34:04 * * @function: TODO * */public class ElasticSearchHandler { private Client client; public ElasticSearchHandler(){ //使用本机做为节点 this("127.0.0.1"); } public ElasticSearchHandler(String ipAddress){ //集群连接超时设置 /* 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,索引建立好之后,会在elasticsearch-0.20.6\data\elasticsearch\nodes\0创建所以你看 * @param indexName 为索引库名,一个es集群中可以有多个索引库。 名称必须为小写 * @param indexType Type为索引类型,是用来区分同索引库下不同类型的数据的,一个索引库下可以有多个索引类型。 * @param jsondata json格式的数据集合 * * @return */ public void createIndexResponse(String indexname, String type, List<String> jsondata){ //创建索引库 需要注意的是.setRefresh(true)这里一定要设置,否则第一次建立索引查找不到数据 IndexRequestBuilder requestBuilder = client.prepareIndex(indexname, type).setRefresh(true); for(int i=0; i<jsondata.size(); i++){ requestBuilder.setSource(jsondata.get(i)).execute().actionGet(); } } /** * 创建索引 * @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; } /** * 执行搜索 * @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("查询到记录数=" + 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); //查询条件 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() + ")药品名称:" +medicine.getName() + "\t\t" + medicine.getFunction()); } }}
{"id":1,"name":"银花 感冒 颗粒","funciton":"功能主治:银花感冒颗粒 ,头痛,清热,解表,利咽。"}{"id":2,"name":"感冒 止咳糖浆","funciton":"功能主治:感冒止咳糖浆,解表清热,止咳化痰。"}{"id":3,"name":"感冒灵颗粒","funciton":"功能主治:解热镇痛。头痛 ,清热。"}{"id":4,"name":"感冒 灵胶囊","funciton":"功能主治:银花感冒颗粒 ,头痛,清热,解表,利咽。"}{"id":5,"name":"仁和 感冒 颗粒","funciton":"功能主治:疏风清热,宣肺止咳,解表清热,止咳化痰。"}查询到记录数=5(4)药品名称:感冒 灵胶囊 功能主治:银花感冒颗粒 ,头痛,清热,解表,利咽。(1)药品名称:银花 感冒 颗粒 功能主治:银花感冒颗粒 ,头痛,清热,解表,利咽。(2)药品名称:感冒 止咳糖浆 功能主治:感冒止咳糖浆,解表清热,止咳化痰。(3)药品名称:感冒灵颗粒 功能主治:解热镇痛。头痛 ,清热。(5)药品名称:仁和 感冒 颗粒 功能主治:疏风清热,宣肺止咳,解表清热,止咳化痰。
安装完之后,在lasticsearch-0.20.6\plugins\目录下就多了head插件
直接打开目录中的index.html文件即可进入管理工具
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在此感谢好友李志,林帆,天天天蓝 学习时给予指导.
转载请注明出处:[http://www.cnblogs.com/dennisit/archive/2013/04/08/3008631.html]