Elasticsearch聚合查询 Java

前两天分组查ES中的数据，给我难为的啊。。网上好多例子，总是不尽人意，最主要的是我刚接触，啥都不懂。如今小有成就，记录备份一下：

业务场景：控制端数据表中，存有管理员的数据，我要根据管理员来分组，查询出有几个管理员。

实体类：注意：需要分组查询的字段类型，要用@Field(type = FieldType.Keyword)   用Keyword类型

package com.elasticsearch.document;

import java.util.Date;

import javax.persistence.Id;

import org.springframework.data.elasticsearch.annotations.DateFormat;
import org.springframework.data.elasticsearch.annotations.Document;
import org.springframework.data.elasticsearch.annotations.Field;
import org.springframework.data.elasticsearch.annotations.FieldType;

import com.fasterxml.jackson.annotation.JsonFormat;

import lombok.Data;
import lombok.ToString;

@Data
@ToString
@Document(indexName = "resource_console", type = "console_info", shards = 1, replicas = 0)
public class ConsoleInfoEs {
    @Id
	private Long id;			
    @Field(type = FieldType.Text)
    private String consoleName;     //控制端名
	@Field(type = FieldType.Text)
	private String areaCode;		//地区代码
	@Field(type = FieldType.Keyword)
	private String areaName;		//地区名
	@Field(type = FieldType.Text)
	private String companyCode;		//公司代码
	@Field(type = FieldType.Keyword)
	private String companyName;		//公司名
	@Field(type = FieldType.Keyword)
	private String adminCode;		//管理员代码
	@Field(type = FieldType.Text)
	private String adminName;		//管理员姓名
	@Field(type = FieldType.Text)
	private String adminPhone;		//管理员联系电话
	@Field(type = FieldType.Text)
	private String status;			//终端状态(0：[新建]未激活，1：在线，2：离线)
	@Field(type = FieldType.Text)
	private String token;			//验证TOKEN
	@Field(type = FieldType.Keyword)
	private String ip;				//IP地址	
	@Field(type = FieldType.Text)
	private String version;			//当前版本
	@Field(type = FieldType.Text)
	private String location;		//所在位置
	
	@Field(type = FieldType.Text)
	private String	deleteFlag;		//'0'	删除标识(0：未删除，1：已删除)
    
    @Field(type = FieldType.Text)
	private String	createBy;		//创建人	
    
    @Field( type = FieldType.Date,format = DateFormat.custom,pattern = "yyyy-MM-dd HH:mm:ss")
    @JsonFormat (shape = JsonFormat.Shape.STRING, pattern ="yyyy-MM-dd HH:mm:ss",timezone="GMT+8")
	private Date createDate;		//创建时间
	
	@Field(type = FieldType.Text)
	private	String updateBy;		//更新人
	
	@Field( type = FieldType.Date,format = DateFormat.custom,pattern = "yyyy-MM-dd HH:mm:ss")
    @JsonFormat (shape = JsonFormat.Shape.STRING, pattern ="yyyy-MM-dd HH:mm:ss",timezone="GMT+8")
	private Date	updateDate;		//更新时间

	@Field( type = FieldType.Date,format = DateFormat.custom,pattern = "yyyy-MM-dd HH:mm:ss")
	@JsonFormat (shape = JsonFormat.Shape.STRING, pattern ="yyyy-MM-dd HH:mm:ss",timezone="GMT+8")
	private Date	upgradeDate;		//升级时间

	@Field(type = FieldType.Keyword)
	private	String isSucceeded;		//是否升级成功（1：是，0：否）
}

 

package com.common.base;

import lombok.Builder;
import lombok.Data;

/**
 * 响应结果
 * @param  响应数据类型
 */
@Data
@Builder
public class ResponseResult {

	public static final String SUCCESS_CODE = "1";
	public static final String ERROR_CODE = "0";

	public static final String SUCCESS_MESSAGE = "success";
	public static final String ERROR_MESSAGE = "error";

	/** 状态码 */
	private String code;

	/** 响应消息 */
	private String message;

	/** 响应结果 */
	private T data;

	/**
	 * 创建响应结果
	 * 
	 * @param 
	 * @param code
	 * @param message
	 * @param data
	 * @return
	 */
	@SuppressWarnings("unchecked")
	public static  ResponseResult of(String code, String message, T data) {
		return (ResponseResult) ResponseResult.builder().code(code).message(message).data(data).build();
	}

	/**
	 * 创建响应结果
	 * 
	 * @param 
	 * @param code
	 * @param message
	 * @param data
	 * @return
	 */
	public static  ResponseResult of(String code, String message) {
		return of(code, message, null);
	}

	/**
	 * 成功
	 * 
	 * @param 
	 * @return
	 */
	public static  ResponseResult success() {
		return of(SUCCESS_CODE, SUCCESS_MESSAGE);
	}

	/**
	 * 成功
	 * 
	 * @param 
	 * @return
	 */
	public static  ResponseResult success(T data) {
		return of(SUCCESS_CODE, SUCCESS_MESSAGE, data);
	}

	/**
	 * 失败
	 * 
	 * @param 
	 * @return
	 */
	public static  ResponseResult error() {
		return of(ERROR_CODE, ERROR_MESSAGE);
	}

	/**
	 * 失败
	 * 
	 * @param 
	 * @return
	 */
	public static  ResponseResult error(T data) {
		return of(ERROR_CODE, ERROR_MESSAGE, data);
	}
}

实体有了，在elasticsearch里生成表，插入数据、查询数据（可能方法存在错误，临时拼凑的，仅供参考）

package com.yltd.sams.controller.es;

import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.search.aggregations.AggregationBuilders;
import org.elasticsearch.search.aggregations.bucket.terms.StringTerms;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.elasticsearch.core.ElasticsearchTemplate;
import org.springframework.data.repository.CrudRepository;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.yltd.sams.common.base.ResponseResult;
import com.yltd.sams.elasticsearch.document.ConsoleInfoEs;

import lombok.extern.slf4j.Slf4j;

@Slf4j
@RestController
@RequestMapping(value = "/es/realtime_homepage", produces = MediaType.APPLICATION_JSON_VALUE)
public class Test {
	
	@Autowired
	private static ElasticsearchTemplate elasticsearchTemplate;
	@Autowired
	private static CrudRepository crudRepository;
	
	@Autowired
	private static Client client;
	//主入口
public static void main(String[] args) {
	//创建索引
	createIndex();
	log.info("============================");
	//创建查询索引,参数resource_console表示要查询的索引库为resource_console
		 SearchResponse searchResponse = client.prepareSearch("resource_console")
	               .addAggregation(AggregationBuilders.terms("adminCode_count").field("adminCode")
	               )
	               .execute().actionGet();
		// 执行搜索,返回搜索响应信息
		 StringTerms adminCode_count = (StringTerms)searchResponse.getAggregations().asMap().get("adminCode_count");
		long controlEndUser = adminCode_count.getBuckets().size();
		System.out.println(controlEndUser);
		log.info("============================");
}
	//创建索引
public static ResponseResult