Elasticsearch5.2.2 过滤字段查询,指定返回字段数据

最新推荐文章于 2025-05-28 07:58:56 发布

原创最新推荐文章于 2025-05-28 07:58:56 发布 · 3.4k 阅读

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这是一个使用Elasticsearch 5.2.2进行搜索的例子，代码展示了如何过滤查询条件并指定返回的字段数据。通过构建BoolQueryBuilder匹配DISPLAY_CONTENT字段，并设置返回的字段为'TITLE'。

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package com.query.test;

import java.net.InetAddress;

import org.elasticsearch.action.search.SearchRequestBuilder;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.MatchPhraseQueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
import org.elasticsearch.transport.client.PreBuiltTransportClient;
import org.junit.Test;

import com.es.allpeizhi.EsAll;

/**
* 文件名： ElasticSearchBulkIn.java
* 包名：
* 描述：过滤字段查询,指定返回字段数据
* 机能名称：
* 技能ID ：
* 作者： smkj
* 版本： V1.0
*/
public class searchGuolv {
   @Test
   public static void main(String[] args) throws Exception {
       EsAll esall = new EsAll();
       // 查询关键字
       String searchName = "重庆市政府采购网";
       Long nowTime = System.currentTimeMillis();

       InetSocketTransportAddress node = new InetSocketTransportAddress(InetAddress.getByName(esall.host), esall.prot);
       // 配置settiong
       Settings settings = Settings.builder().put("cluster.name", "my-application").build();

       TransportClient client = new PreBuiltTransportClient(settings);
       client.addTransportAddress(node);
       System.out.println("ES--ip地址:" + node.getAddress());

       String index = esall.IndexName;
       String type = esall.TypeName;
       // 指定要返回的字段
       String[] fields = new String[1];
       fields[0] = "TITLE"; // 字段1名称
       // 构造query
       SearchRequestBuilder requestBuilder = client.prepareSearch(index);
       // setFields 2.x版本
       requestBuilder.setFrom(0).setSize(10).setTimeout(TimeValue.timeValueMillis(10)).setTypes(type).setFetchSource(fields, null);// 排除字段null
       ;
       // bool 条件
//       BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
//       MatchPhraseQueryBuilder tqb = QueryBuilders.matchPhraseQuery("DISPLAY_CONTENT", keword);
       BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
       MatchPhraseQueryBuilder tqb = QueryBuilders.matchPhraseQuery("DISPLAY_CONTENT", searchName);

       boolQueryBuilder.must(tqb);
       // set query
       requestBuilder.setQuery(boolQueryBuilder);
       // get response
       SearchResponse response = requestBuilder.execute().actionGet();
       // 遍历返回的字段
       SearchHits searchHits = response.getHits();
//       List<String> id = new ArrayList<>();
       for (SearchHit hit : searchHits) {
           System.out.println(hit.getSource().get("TITLE"));
//           System.out.println(hit.getFields().get("TITLE").getValue().toString());//2.x版本
       }
       client.close();
       System.out.println("命中总数量：" + response.getHits().getTotalHits());

//       System.out.println(id.size());
       System.out.println("耗时：" + (System.currentTimeMillis() - nowTime) / 1000 + "秒");
   }

}