elasticsearch-1.2.1客户端连接DEMO

1.下载elasticsearch-1.2.1的zip包，解压之后 双击bin目录中的 elasticsearch.bat(针对windows系统) 启动服务器(默认监听9200端口)

访问 http://localhost:9200 出现下边的json数据则说明启动成功

2.客户端连接的代码示例：

package com.jiaoyiping.othersimple;

/**
 * Created with IntelliJ IDEA.
 * User: 焦一平
 * Date: 14-7-8
 * Time: 下午11:57
 * To change this template use File | Settings | File Templates.
 */
import java.util.ArrayList;
import java.util.List;
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;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


public class ElasticSearchHandler {

    Logger logger = LoggerFactory.getLogger(ElasticSearchHandler.class);
    private Client client;

    public ElasticSearchHandler(){
    //使用本机做为节点
        this("127.0.0.1");
    }

    public ElasticSearchHandler(String ipAddress){
        client = new TransportClient().addTransportAddress(new InetSocketTransportAddress(ipAddress, 9300));
    }


    /**
     * @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.getHits();
        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));
            }
        }
        client.close();//关闭连接(如果在这里不关闭的话会报：远程主机强制关闭了一个连接)
        return list;
    }


    public static void main(String[] args) {
        ElasticSearchHandler esHandler = new ElasticSearchHandler();
        List<String> jsondata = DataFactory.getInitJsonData();
        String indexname = "indexdemo";
        String type = "typedemo";
        //添加到索引
        // esHandler.createIndexResponse(indexname, type, jsondata);
        //查询条件
        QueryBuilder queryBuilder = QueryBuilders.queryString("name:姓名") ;
        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() + ")名称:" +medicine.getName() + "		" + medicine.getFunction());
        }
    }
}