ElasticSearch分组统计查询

ES 分组查询

maven依赖：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>

构建配置类：

package cn.com.newcapec.config;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Component
@ConfigurationProperties(prefix = "sl")
public class EsServiceConfig {
    private String publickey;
    private String esUserName;
    private String esPassword;
    private String esHost;
    private String esPort;
    private String esScheme;

    public String getEsUserName() {
        return esUserName;
    }

    public void setEsUserName(String esUserName) {
        this.esUserName = esUserName;
    }

    public String getEsPassword() {
        return esPassword;
    }

    public void setEsPassword(String esPassword) {
        this.esPassword = esPassword;
    }

    public String getEsHost() {
        return esHost;
    }

    public void setEsHost(String esHost) {
        this.esHost = esHost;
    }

    public String getEsPort() {
        return esPort;
    }

    public void setEsPort(String esPort) {
        this.esPort = esPort;
    }

    public String getEsScheme() {
        return esScheme;
    }

    public void setEsScheme(String esScheme) {
        this.esScheme = esScheme;
    }

    public String getPublickey() {
        return publickey;
    }

    public void setPublickey(String publickey) {
        this.publickey = publickey;
    }
}

package cn.com.newcapec.config;

import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.nio.client.HttpAsyncClientBuilder;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestClientBuilder;
import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.elasticsearch.config.AbstractElasticsearchConfiguration;
import org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate;

@Configuration
public class ElasticsearchConfig extends AbstractElasticsearchConfiguration {
    @Autowired
    private EsServiceConfig esServiceConfig;

    @Override
    public RestHighLevelClient elasticsearchClient() {
        CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
    //访问用户名和密码为您创建阿里云Elasticsearch实例时设置的用户名和密码，也是Kibana控制台的登录用户名和密码。
        credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(esServiceConfig.getEsUserName(), esServiceConfig.getEsPassword()));
        // 通过builder创建rest client，配置http client的HttpClientConfigCallback。
        // 单击所创建的Elasticsearch实例ID，在基本信息页面获取公网地址，即为ES集群地址。
        RestClientBuilder builder = RestClient.builder(new HttpHost(esServiceConfig.getEsHost(), Integer.valueOf(esServiceConfig.getEsPort()), esServiceConfig.getEsScheme())).setHttpClientConfigCallback(new RestClientBuilder.HttpClientConfigCallback() {
            @Override
            public HttpAsyncClientBuilder customizeHttpClient(HttpAsyncClientBuilder httpClientBuilder) {
                return httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
            }
        });
        // RestHighLevelClient实例通过REST low-level client builder进行构造。
        return new RestHighLevelClient(builder);
    }
    @Bean
    public ElasticsearchRestTemplate restTemplate() {
        return new ElasticsearchRestTemplate(elasticsearchClient());
    }
}

根据两个字段进行统计：

--- 注入
 @Autowired
 private ElasticsearchRestTemplate restTemplate;
--- 方法
{
//构建查询条件
BoolQueryBuilder queryBuilder = QueryBuilders.boolQuery();
//第一个参数是别名 第二个参数要统计的字段名称
TermsAggregationBuilder agg1 = AggregationBuilders.terms("countArea").field("qy_area").size(10000);
TermsAggregationBuilder agg2 = AggregationBuilders.terms("countXueli").field("xueli").size(10000);
// qy_area是求和字段名称，num是结果别名
SumAggregationBuilder sb = AggregationBuilders.sum("qy_area").field("num");
// 通过qy_area字段分组统计总数
agg1.subAggregation(sb);
// 通过xueli字段分组统计总数
agg2.subAggregation(sb);
// 合并
agg1.subAggregation(agg2);
NativeSearchQuery build = new       NativeSearchQueryBuilder().withQuery(queryBuilder).addAggregation(agg1).build();
SearchHits<RegionalDirectionDoc> searchHits = restTemplate.search(build,RegionalDirectionDoc.class);
Aggregations aggregations1 = searchHits.getAggregations();
// 取出聚合结果
Terms terms = (Terms) aggregations1.asMap().get("countArea");
//记录统计结果
List<Map<String, Object>> mapList = new ArrayList<>();
for (Terms.Bucket bucket : terms.getBuckets())
{
    Map<String, Object> map = new HashMap<>(16);
    // 聚合字段列的值
    String keyAsString = bucket.getKeyAsString();
    // 聚合字段对应的数量
    long docCount = bucket.getDocCount();
    map.put("qy_area", keyAsString);
    map.put("number", docCount);
    //解析城市下学历统计
    Aggregations aggregations2 = bucket.getAggregations();
    Terms terms2 = (Terms) aggregations2.asMap().get("countXueli");
    List<Map<String, Object>> mapList2 = new ArrayList<>();
    for (Terms.Bucket bucket2 : terms2.getBuckets())
    {
        Map<String, Object> map2 = new HashMap<>(16);
        // 聚合字段列的值
        String keyAsString2 = bucket2.getKeyAsString();
        // 聚合字段对应的数量
        long docCount2 = bucket2.getDocCount();
        map2.put("xueli", keyAsString2);
        map2.put("number", docCount2);
        mapList2.add(map2);
    }
    map.put("xueliList", mapList2);
    mapList.add(map);
}
}

实体定义：

package cn.com.newcapec.entity;

import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;
import org.springframework.data.elasticsearch.annotations.Field;
import org.springframework.data.elasticsearch.annotations.FieldType;

@Document(indexName = "regional_direction_entity")
public class RegionalDirectionDoc {
    /**
     * 唯一标识
     */
    @Id
    private String id;
    /**
     * 学历
     */
    @Field(type = FieldType.Keyword)
    private String xueli;
    /**
     * 区编号
     */
    @Field(type = FieldType.Keyword)
    private String code;
    /**
     * 困难生类别
     */
    @Field(type = FieldType.Keyword)
    private String kunnansheng_id;
    /**
     * 师范生类别
     */
    @Field(type = FieldType.Keyword)
    private String shifansheng_id;
    /**
     * 学生类别
     */
    @Field(type = FieldType.Keyword)
    private String xueshengliebie_id;
    /**
     * 学制
     */
    @Field(type = FieldType.Keyword)
    private String xuezhi;
    /**
     * 政治面貌
     */
    @Field(type = FieldType.Keyword)
    private String political;
    /**
     * 毕业
     */
    @Field(type = FieldType.Keyword)
    private String biye;
    /**
     * 班级
     */
    @Field(type = FieldType.Keyword)
    private String class_id;
    /**
     * 专业
     */
    @Field(type = FieldType.Keyword)
    private String professional_id;
    /**
     * 院系
     */
    @Field(type = FieldType.Keyword)
    private String department_id;
    /**
     * 毕业去向状态  11校本级通过
     */
    @Field(type = FieldType.Keyword)
    private String byqx_status;
    /**
     * 学校id
     */
    @Field(type = FieldType.Keyword)
    private String school_id;
    /**
     * 企业所在区
     */
    @Field(type = FieldType.Keyword)
    private String qy_area;
    /**
     * 所在省
     */
    @Field(type = FieldType.Keyword)
    private String shengyuan;


    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getXueli() {
        return xueli;
    }

    public void setXueli(String xueli) {
        this.xueli = xueli;
    }

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public String getKunnansheng_id() {
        return kunnansheng_id;
    }

    public void setKunnansheng_id(String kunnansheng_id) {
        this.kunnansheng_id = kunnansheng_id;
    }

    public String getShifansheng_id() {
        return shifansheng_id;
    }

    public void setShifansheng_id(String shifansheng_id) {
        this.shifansheng_id = shifansheng_id;
    }

    public String getXueshengliebie_id() {
        return xueshengliebie_id;
    }

    public void setXueshengliebie_id(String xueshengliebie_id) {
        this.xueshengliebie_id = xueshengliebie_id;
    }

    public String getXuezhi() {
        return xuezhi;
    }

    public void setXuezhi(String xuezhi) {
        this.xuezhi = xuezhi;
    }

    public String getPolitical() {
        return political;
    }

    public void setPolitical(String political) {
        this.political = political;
    }

    public String getBiye() {
        return biye;
    }

    public void setBiye(String biye) {
        this.biye = biye;
    }

    public String getClass_id() {
        return class_id;
    }

    public void setClass_id(String class_id) {
        this.class_id = class_id;
    }

    public String getProfessional_id() {
        return professional_id;
    }

    public void setProfessional_id(String professional_id) {
        this.professional_id = professional_id;
    }

    public String getDepartment_id() {
        return department_id;
    }

    public void setDepartment_id(String department_id) {
        this.department_id = department_id;
    }

    public String getByqx_status() {
        return byqx_status;
    }

    public void setByqx_status(String byqx_status) {
        this.byqx_status = byqx_status;
    }

    public String getSchool_id() {
        return school_id;
    }

    public void setSchool_id(String school_id) {
        this.school_id = school_id;
    }

    public String getQy_area() {
        return qy_area;
    }

    public void setQy_area(String qy_area) {
        this.qy_area = qy_area;
    }

    public String getShengyuan() {
        return shengyuan;
    }

    public void setShengyuan(String shengyuan) {
        this.shengyuan = shengyuan;
    }
}

创建索引文件：

PUT regional_direction_entity
{
  "mappings": {
      "properties": {
        "biye": {
          "type": "keyword"
        },
        "byqx_status": {
          "type": "keyword"
        },
        "class_id": {
          "type": "keyword"
        },
        "code": {
          "type": "keyword"
        },
        "department_id": {
          "type": "keyword"
        },
        "id": {
          "type": "text",
          "fields": {
            "keyword": {
              "type": "keyword",
              "ignore_above": 256
            }
          }
        },
        "kunnansheng_id": {
          "type": "keyword"
        },
        "political": {
          "type": "keyword"
        },
        "professional_id": {
          "type": "keyword"
        },
        "qy_area": {
          "type": "keyword"
        },
        "school_id": {
          "type": "keyword"
        },
        "shengyuan": {
          "type": "keyword"
        },
        "shifansheng_id": {
          "type": "keyword"
        },
        "type": {
          "type": "text",
          "fields": {
            "keyword": {
              "type": "keyword",
              "ignore_above": 256
            }
          }
        },
        "xueli": {
          "type": "keyword"
        },
        "xueshengliebie_id": {
          "type": "keyword"
        },
        "xuezhi": {
          "type": "keyword"
        }
      }
    }
}

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