03 elasticsearch java api

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());
}
}
}