Elasticsearch5.0 Java Api -- 聚合查询

Posted 2020-09-18

　　测试聚合查询功能

 1 package com.juyun.test;
 2 
 3 import java.net.InetAddress;
 4 import java.util.List;
 5 
 6 import org.elasticsearch.action.search.SearchResponse;
 7 import org.elasticsearch.client.Client;
 8 import org.elasticsearch.common.settings.Settings;
 9 import org.elasticsearch.common.transport.InetSocketTransportAddress;
10 import org.elasticsearch.index.query.QueryBuilder;
11 import org.elasticsearch.index.query.QueryBuilders;
12 import org.elasticsearch.search.SearchHit;
13 import org.elasticsearch.search.SearchHits;
14 import org.elasticsearch.search.aggregations.AbstractAggregationBuilder;
15 import org.elasticsearch.search.aggregations.AggregationBuilder;
16 import org.elasticsearch.search.aggregations.AggregationBuilders;
17 import org.elasticsearch.search.aggregations.bucket.children.Children;
18 import org.elasticsearch.search.aggregations.bucket.terms.Terms;
19 import org.elasticsearch.search.aggregations.bucket.terms.Terms.Bucket;
20 import org.elasticsearch.search.aggregations.metrics.avg.InternalAvg;
21 import org.elasticsearch.search.aggregations.metrics.sum.InternalSum;
22 import org.elasticsearch.transport.client.PreBuiltTransportClient;
23 
24 public class ElasticSearchAggregation {
25 
26     private static Client client;
27     
28     /**
29      * 聚合查询
30      * @param args
31      */
32     public static void main(String[] args) {
33 
34         try {
35             // 设置集群名称 
36             Settings settings = Settings.builder().put("cluster.name", "elasticsearch").build();
37             // 创建client
38             client = new PreBuiltTransportClient(settings)
39                     .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("172.16.0.157"), 9300));
40             
41             long startTime=System.currentTimeMillis(); // 获取开始时间    
42             
43             agg("flow", "data");
44             //childQuery("newindex","http");
45             
46             long endTime=System.currentTimeMillis(); //获取结束时间
47             System.out.println("程序运行时间： "+(endTime-startTime)+"ms");
48             
49             
50             // 关闭client
51             client.close();
52 
53         } catch (Exception e) {
54             e.printStackTrace();
55         }
56     }
57 
58     // 计算inbyte和outbyte的平均值
59     public static void agg(String indexName, String typeName) {
60         SearchResponse response = client
61                                 .prepareSearch(indexName)
62                                 .setTypes(typeName)
63                                 .addAggregation(AggregationBuilders.avg("avgOfInbyte").field("inbyte"))
64                                 .addAggregation(AggregationBuilders.avg("avgOfOutbyte").field("outbyte"))
65                                 .addAggregation(AggregationBuilders.sum("sumOfInbyte").field("inbyte"))
66                                 .addAggregation(AggregationBuilders.sum("sumOfOutbyte").field("outbyte"))
67                                 .get();
68 
69         InternalAvg avgOfInbyte  = response.getAggregations().get("avgOfInbyte");
70         InternalAvg avgOfOutbyte  = response.getAggregations().get("avgOfOutbyte");
71         InternalSum sumOfInbyte = response.getAggregations().get("sumOfInbyte");
72         InternalSum sumOfOutbyte = response.getAggregations().get("sumOfOutbyte");
73         System.out.println("inbyte的平均值是："+avgOfInbyte.getValue());
74         System.out.println("outbyte的平均值是："+avgOfOutbyte.getValue());
75         System.out.println("inbyte的总值是："+sumOfInbyte.getValue());
76         System.out.println("outbyte的总值是："+sumOfOutbyte.getValue());
77     }
78 }

ElasticSearchAggregation