ElasticSearch（五）：Java操作ElasticSearch执行查询

 package com.gxy.ESChap01;

 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.index.query.QueryBuilder;
 import org.elasticsearch.index.query.QueryBuilders;
 import org.elasticsearch.search.SearchHit;
 import org.elasticsearch.search.SearchHits;
 import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
 import org.elasticsearch.search.sort.SortOrder;
 import org.elasticsearch.transport.client.PreBuiltTransportClient;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;

 public class ESQuery {
     private static String host="192.168.56.3"; // 服务器地址
     private static int port=9300; // 端口

     public static final String CLUSTER_NAME = "my-application"; //集群名称

     private TransportClient client=null;

     private static Settings settings= Settings.builder()
             .put("cluster.name",CLUSTER_NAME)
             .put("client.transport.sniff", true)
             .build();

     //获取客户端
     @SuppressWarnings({ "resource", "unchecked" })
     @Before
     public void getClient() throws Exception {
         try {
             client = new PreBuiltTransportClient(settings)
                     .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(host),port));
         } catch (Exception e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
     }

     //关闭客户端
     @After
     public void close() {
         if(client!=null) {
             client.close();
         }
     }

     /**
      * 查询所有
      */
     @Test
     public void searchAll() {
         SearchRequestBuilder srb=client.prepareSearch("film").setTypes("dongzuo");
         SearchResponse sr=srb.setQuery(QueryBuilders.matchAllQuery()).execute().actionGet();//查询所有
         SearchHits hits=sr.getHits();
         for(SearchHit hit:hits) {
             System.out.println(hit.getSourceAsString());
         }
     }
     /**
      * 分页查询
      */
     @Test
     public void searchPaging() {
         SearchRequestBuilder srb=client.prepareSearch("film").setTypes("dongzuo");
         SearchResponse sr=srb.setQuery(QueryBuilders.matchAllQuery()).setFrom(0).setSize(2).execute().actionGet();
         SearchHits hits=sr.getHits();
         for (SearchHit hit : hits) {
             System.out.println(hit.getSourceAsString());
         }
     }
     /**
      * 排序查询
      */
     @Test
     public void searchOrderBy() {
         SearchRequestBuilder srb=client.prepareSearch("film").setTypes("dongzuo");
         SearchResponse sr=srb.setQuery(QueryBuilders.matchAllQuery())
                 .addSort("publishDate",SortOrder.DESC).execute().actionGet();
         SearchHits hits=sr.getHits();
         for (SearchHit hit : hits) {
             System.out.println(hit.getSourceAsString());
         }
     }
     /**
      * 数据列过滤查询
      */
     @Test
     public void searchInclude() {
         SearchRequestBuilder srb=client.prepareSearch("film").setTypes("dongzuo");
         SearchResponse sr=srb.setQuery(QueryBuilders.matchAllQuery())
                 .setFetchSource(new String[] {"title","price"},null)
                 .execute()
                 .actionGet();
         SearchHits hits=sr.getHits();
         for (SearchHit hit : hits) {
             System.out.println(hit.getSourceAsString());
         }
     }
     /***
      * 简单条件查询
      */
     @Test
     public void searchByCondition() {
         SearchRequestBuilder srb=client.prepareSearch("film").setTypes("dongzuo");
         SearchResponse sr=srb.setQuery(QueryBuilders.matchQuery("title","铁"))
                 .setFetchSource(new String[] {"title","price"},null)
                 .execute()
                 .actionGet();
         SearchHits hits=sr.getHits();
         for (SearchHit hit : hits) {
             System.out.println(hit.getSourceAsString());
         }
     }
     /**
      * 条件查询高亮实现
      */
     @Test
     public void searchHighlight() {
         SearchRequestBuilder srb=client.prepareSearch("film").setTypes("dongzuo");
         HighlightBuilder highlightBuilder=new HighlightBuilder();
         highlightBuilder.preTags("<h2>");
         highlightBuilder.postTags("</h2>");
         highlightBuilder.field("title");
         SearchResponse sr=srb.setQuery(QueryBuilders.matchQuery("title","战"))
                 .highlighter(highlightBuilder)
                 .setFetchSource(new String[] {"title","price"},null)
                 .execute()
                 .actionGet();
         SearchHits hits=sr.getHits();
         for (SearchHit hit : hits) {
             System.out.println(hit.getSourceAsString());
             System.out.println(hit.getHighlightFields());
         }
     }
     /**
      * 多条件查询  must
      */
     @Test
     public void searchMutil() {
         SearchRequestBuilder srb =client.prepareSearch("film").setTypes("dongzuo");
         QueryBuilder queryBuilder=QueryBuilders.matchPhraseQuery("title", "战");
         QueryBuilder queryBuilder2=QueryBuilders.matchPhraseQuery("content", "星球");
         SearchResponse sr=srb.setQuery(QueryBuilders.boolQuery()
                 .must(queryBuilder)
                 .must(queryBuilder2))
                 .execute()
                 .actionGet();
         SearchHits hits=sr.getHits();
         for (SearchHit hit : hits) {
             System.out.println(hit.getSourceAsString());
         }
     }

     /**
      * 多条件查询  mustNot
      */
     @Test
     public void searchMutil2() {
         SearchRequestBuilder srb =client.prepareSearch("film").setTypes("dongzuo");
         QueryBuilder queryBuilder=QueryBuilders.matchPhraseQuery("title", "战");
         QueryBuilder queryBuilder2=QueryBuilders.matchPhraseQuery("content", "武士");
         SearchResponse sr=srb.setQuery(QueryBuilders.boolQuery()
                 .must(queryBuilder)
                 .mustNot(queryBuilder2))
                 .execute()
                 .actionGet();
         SearchHits hits=sr.getHits();
         for (SearchHit hit : hits) {
             System.out.println(hit.getSourceAsString());
         }
     }

     /**
      * 多条件查询  should提高得分
      * @throws Exception
      */
     @Test
     public void searchMutil3()throws Exception{
         SearchRequestBuilder srb=client.prepareSearch("film").setTypes("dongzuo");
         QueryBuilder queryBuilder=QueryBuilders.matchPhraseQuery("title", "战");
         QueryBuilder queryBuilder2=QueryBuilders.matchPhraseQuery("content", "星球");
         QueryBuilder queryBuilder3=QueryBuilders.rangeQuery("publishDate").gt("2018-01-01");
         SearchResponse sr=srb.setQuery(QueryBuilders.boolQuery()
                 .must(queryBuilder)
                 .should(queryBuilder2)
                 .should(queryBuilder3))
             .execute()
             .actionGet();
         SearchHits hits=sr.getHits();
         for(SearchHit hit:hits){
             System.out.println(hit.getScore()+":"+hit.getSourceAsString());
         }
     }
     /***
      * 多条件查询 range限制范围
      */
     @Test
     public void searchMutil4() {
         SearchRequestBuilder srb = client.prepareSearch("film").setTypes("dongzuo");
         QueryBuilder queryBuilder=QueryBuilders.matchPhraseQuery("title", "战");
         QueryBuilder queryBuilder2=QueryBuilders.rangeQuery("price").lte(40);
         SearchResponse sr=srb.setQuery(QueryBuilders.boolQuery()
                 .must(queryBuilder)
                 .filter(queryBuilder2))
                 .execute()
                 .actionGet();
         SearchHits hits=sr.getHits();
         for (SearchHit hit : hits) {
             System.out.println(hit.getSourceAsString());
         }
     }
 }