elasticsearch7使用指导

目录结构：

一、es概述

二、es安装/head插件安装/kibana安装

三、es核心概念

四、IK分词器

五、RestFul操作

六、CRUD(增删改查)

七、Springboot集成es

---------------------------------------分割线：正文--------------------------------------------------------

一、es概述

1、Doug Cutting

（1）创建了Lucene，（es与solr基于Lucene），开源且功能为一套信息检索工具包，jar包

（2）实现了NDFS（分布式文件存储系统）基于Google的GFS系统

（3）将NDFS与MapReduce升级改造，重新命名为Hadoop，hadoop之父

（4）基于Google的BigTable，实现了Hbase

2、ElasticSearch概述

（1）概念：开源的分布式全文检索引擎

（2）优点：近乎实时存储、检索数据，扩展性好，可扩展上百台服务器，处理PB级别的数据，基于Lucene核心，通过RestFul API使全文搜索变得简单

（3）谁在使用：维基百科，搜狐新闻，Github等等

3、ES与solr的区别

（1）ES是RestFul API，而Solr是WebService API

（2）单纯已有的数据搜索，solr更快

（3）建立索引后的数据，Solr会产生io阻塞，es有明显的优势

（4）数据量增加，Solr的搜索效率会变低，es不受影响

二、es安装/head插件安装/kibana安装

声明：安装条件，JDK1.8+

1、es下载：

（1）es客户端：https://www.elastic.co/cn/downloads/elasticsearch

（2）ik分词器：https://github.com/medcl/elasticsearch-analysis-ik/releases

（3）kibana：https://www.elastic.co/cn/downloads/kibana

（4）head插件：https://github.com/mobz/elasticsearch-head/archive/master.zip

（5）chrome-es插件：https://github.com/mobz/elasticsearch-head/blob/master/crx/es-head.crx

2、es客户端windows安装

（1）安装步骤

elasticsearch-7.12.1-windows-x86_64.zip 解压即可。

（2）相关文件

bin：启动文件

config：配置文件

- - log4j2.properties：日志配置

- - elasticsearch.yml：es配置文件，默认9200端口

- - jvm.options：java虚拟机相关配置

lib：相关jar包

modules：功能模块

plugins：插件！如ik分词器等

logs：日志

（3）启动es

双击bin目录下elasticsearch.bat

启动成功，默认访问9200端口

浏览器访问：http://127.0.0.1:9200/ 返回相关配置信息

3、安装可视化界面：es head的插件

（1）解压缩：elasticsearch-head-master.zip

（2）安装node.js：https://nodejs.org/en/

cmd：node -v验证安装成功

（3）安装cnpm：

cmd安装淘宝镜像：npm install -g cnpm -registry=https://registry.npm.taobao.org

cnpm -v验证安装成功

（4）安装依赖：

进入D:elasticsearchelasticsearch-head-master目录；执行cnpm install；

（5）运行npm run start启动npm

（6）浏览器访问：http://localhost:9100

由于跨域无法访问：

（7）配置可跨域

配置conf下elasticsearch.yml新增配置

http.cors.enabled: true
http.cors.allow-origin: "*"

重启es服务，再次访问，集群连接正常

4、Kibana安装

（1）Kibana安装的版本要与es版本对应：

（2）启动测试：运行bin下kibana.bat并测试对应的接口

（3）开发工具 http://localhost:5601

（4）配置中文：config下kibana.yml，新增配置并重启服务

i18n.locale: "zh-CN"

三、es核心概念

1、elasticsearch是面向文档的(一切都是json)，与关系型数据库的对比

RelationDB -> Elasticsearch

数据库(database) -> 索引(indices)

表(tables) -> types(慢慢会被弃用)

行(rows) -> documents

字段(columns) -> fields

2、es物理设计：

elasticsearch在后台把每个索引划分成多个分片，每个分片在集群中的不同的服务间迁移。

默认的集群名就是elasticsearch

3、逻辑设计：

（1）文档：最小单位，即一条条数据

（2）类型：text、date等类型

（3）索引：数据库

4、es字段类型：

text：会被分词器解析

keyword：不会被分词器解析

四、IK分词器

1、分词：

把一段中文或别的划分为一个个关键字，我们在搜索时候会把自己的信息进行分词，默认的中文分词器将每个字看成一个词，我们需安装使用中文分词器ik来解决

2、安装ik分词器：

（1）下载：https://github.com/medcl/elasticsearch-analysis-ik/releases

（2）安装：elasticsearch-analysis-ik-7.12.1.zip放入elasticsearch-7.12.1plugins目录下解压缩即可使用：

（3）重启观察ES，加载插件成功

[2021-05-12T23:00:05,420][INFO ][o.e.p.PluginsService     ] [DESKTOP-GIEVO4Q] loaded plugin [analysis-ik]
[2021-05-12T23:00:05,615][INFO ][o.e.e.NodeEnvironment    ] [DESKTOP-GIEVO4Q] using [1] data paths, mounts [[杞欢 (D:)]], net usable_space [179.3gb], net total_space [300.7gb], types [NTFS]

（4）验证通过：elasticsearch-plugin list

D:elasticsearchelasticsearch-7.12.1bin>elasticsearch-plugin list
"warning: usage of JAVA_HOME is deprecated, use ES_JAVA_HOME"
Future versions of Elasticsearch will require Java 11; your Java version from [C:Program FilesJavajdk1.8.0_271jre] does not meet this requirement. Consider switching to a distribution of Elasticsearch with a bundled JDK. If you are already using a distribution with a bundled JDK, ensure the JAVA_HOME environment variable is not set.
ik

3、使用kibana进行测试

启动kibana进入控制台进行测试

查看不同的分词器效果

（1）ik_smart

GET _analyze
{
  "analyzer": "ik_smart",
  "text":"软件工程师"
}

查看运行结果：

{
  "tokens" : [
    {
      "token" : "软件",
      "start_offset" : 0,
      "end_offset" : 2,
      "type" : "CN_WORD",
      "position" : 0
    },
    {
      "token" : "工程师",
      "start_offset" : 2,
      "end_offset" : 5,
      "type" : "CN_WORD",
      "position" : 1
    }
  ]
}

（2）ik_max_word

GET _analyze
{
  "analyzer": "ik_max_word",
  "text":"软件工程师"
}

查看运行结果：

{
  "tokens" : [
    {
      "token" : "软件工程",
      "start_offset" : 0,
      "end_offset" : 4,
      "type" : "CN_WORD",
      "position" : 0
    },
    {
      "token" : "软件",
      "start_offset" : 0,
      "end_offset" : 2,
      "type" : "CN_WORD",
      "position" : 1
    },
    {
      "token" : "工程师",
      "start_offset" : 2,
      "end_offset" : 5,
      "type" : "CN_WORD",
      "position" : 2
    },
    {
      "token" : "工程",
      "start_offset" : 2,
      "end_offset" : 4,
      "type" : "CN_WORD",
      "position" : 3
    },
    {
      "token" : "师",
      "start_offset" : 4,
      "end_offset" : 5,
      "type" : "CN_CHAR",
      "position" : 4
    }
  ]
}

4、将加入自己需要的词加到分词器的字典中

打开：elasticsearch-7.12.1pluginsikconfigIKAnalyzer.cfg.xml，配置内添加字段映射

（1）配置前

GET _analyze
{
  "analyzer": "ik_max_word",
  "text":"我的妈"
}

查看运行结果：

{
  "tokens" : [
    {
      "token" : "我",
      "start_offset" : 0,
      "end_offset" : 1,
      "type" : "CN_CHAR",
      "position" : 0
    },
    {
      "token" : "的",
      "start_offset" : 1,
      "end_offset" : 2,
      "type" : "CN_CHAR",
      "position" : 1
    },
    {
      "token" : "妈",
      "start_offset" : 2,
      "end_offset" : 3,
      "type" : "CN_CHAR",
      "position" : 2
    }
  ]
}

（2）配置

my.dic

同目录下新增my.dic -> 我的妈

（3）配置后重启es，控制台

{
  "tokens" : [
    {
      "token" : "我的妈",
      "start_offset" : 0,
      "end_offset" : 3,
      "type" : "CN_WORD",
      "position" : 0
    }
  ]
}

查看运行结果：

{
  "tokens" : [
    {
      "token" : "我的妈",
      "start_offset" : 0,
      "end_offset" : 3,
      "type" : "CN_WORD",
      "position" : 0
    }
  ]
}

五、RestFul索引基本操作

1、基本Rest命令:

PUT | localhost:9200/索引名称/类型名称/文档id | 创建文档（指定文档id）

POST | localhost:9200/索引名称/类型名称 | 创建文档（随机文档id）

POST | localhost:9200/索引名称/类型名称/文档id/_update | 修改文档

DELETE | localhost:9200/索引名称/类型名称/文档id | 删除文档

GET | localhost:9200/索引名称/类型名称/文档id | 查询文档通过文档id

POST | localhost:9200/索引名称/类型名称/文档id/_search | 查询所有文档

2、基础测试-创建索引

创建一个索引：PUT /索引名/~类型名~/文档id

PUT /test1/type1/1
{
  "name":"小白学es",
  "age":3
}

查看响应，完成自动增加了索引，类似数据库

#! [types removal] Specifying types in document index requests is deprecated, use the typeless endpoints instead (/{index}/_doc/{id}, /{index}/_doc, or /{index}/_create/{id}).
{
  "_index" : "test1",
  "_type" : "type1",
  "_id" : "1",
  "_version" : 1,
  "result" : "created",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 0,
  "_primary_term" : 1
}

3、基本数据类型

（1）字符串类型：text、keyword

（2）数值类型：long、integer、short、byte、double、half float、scaled、float

（3）日期类型：date

（4）te布尔类型：boolean

（5）二进制类型：binary

4、基础测试-创建并指定索引类型

PUT /test2
{
  "mappings":{
    "properties": {
      "name":{
        "type":"text"
      },
      "age":{
        "type":"long"
      },
      "birthday":{
        "type":"date"
      }
    }
  }
}

查看运行结果

{
  "acknowledged" : true,
  "shards_acknowledged" : true,
  "index" : "test2"
}

5、基础测试-创建/查看默认信息

（1）创建默认索引即文档

PUT /test3/_doc/1
{
  "name":"小白学es",
  "age":18,
  "bithday":"1997-07-07"
}

查看运行结果

{
  "_index" : "test3",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 1,
  "result" : "created",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 0,
  "_primary_term" : 1
}

插件查看

（2）查看索引，默认配置字段类型！

GET test3

运行结果：

{
  "test3" : {
    "aliases" : { },
    "mappings" : {
      "properties" : {
        "age" : {
          "type" : "long"
        },
        "bithday" : {
          "type" : "date"
        },
        "name" : {
          "type" : "text",
          "fields" : {
            "keyword" : {
              "type" : "keyword",
              "ignore_above" : 256
            }
          }
        }
      }
    },
    "settings" : {
      "index" : {
        "routing" : {
          "allocation" : {
            "include" : {
              "_tier_preference" : "data_content"
            }
          }
        },
        "number_of_shards" : "1",
        "provided_name" : "test3",
        "creation_date" : "1621064937104",
        "number_of_replicas" : "1",
        "uuid" : "f_-oPx65RwOk846CysvHRQ",
        "version" : {
          "created" : "7120199"
        }
      }
    }
  }
}

6、扩展，查看集群/索引信息：

查看集群状态：

GET _cat/health

运行结果：

1621065190 07:53:10 elasticsearch yellow 1 1 9 9 0 0 2 0 - 81.8%

查看索引版本信息等：

GET _cat/indices?v

运行结果：

health status index                           uuid                   pri rep docs.count docs.deleted store.size pri.store.size
green  open   .kibana_7.12.1_001              aGaAAOZTSQyk_0ZU_lOXsg   1   0         54           23      4.2mb          4.2mb
yellow open   test2                           3f9X5bcAQXKciY56Il5nfA   1   1          0            0       208b           208b
yellow open   test3                           f_-oPx65RwOk846CysvHRQ   1   1          1            0      4.2kb          4.2kb
green  open   .apm-custom-link                ZyIwiavFSJSFTbh2cMd8Tg   1   0          0            0       208b           208b
green  open   .apm-agent-configuration        FD1qwkXwTTaCT6orvViPRg   1   0          0            0       208b           208b
green  open   .kibana_task_manager_7.12.1_001 MIUHf-m7S_e8XrjZMduTpA   1   0          9          272    286.7kb        286.7kb
green  open   .kibana-event-log-7.12.1-000001 qPBR8ea4Th24CnhfxKa3Sg   1   0          6            0     32.6kb         32.6kb
green  open   .tasks                          uwcYsws9QkqK1CXKQiNI0Q   1   0         10            0       50kb           50kb

7、基础测试-修改索引/文档

（1）直接覆盖：PUT

PUT /test3/_doc/1
{
  "name":"小白学es2",
  "age":18,
  "bithday":"1997-07-07"
}

运行结果：version+1，result为updated

{
  "_index" : "test3",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 2,
  "result" : "updated",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 1,
  "_primary_term" : 1
}

插件查看结果：

（2）update更新：POST

POST /test3/_doc/1/_update
{
  "doc":{
    "name":"小白学es3"
  }
}

运行结果：version+1，result为updated

#! [types removal] Specifying types in document update requests is deprecated, use the endpoint /{index}/_update/{id} instead.
{
  "_index" : "test3",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 3,
  "result" : "updated",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 2,
  "_primary_term" : 1
}

插件查看结果：

8、基础测试-删除索引

（1）删除索引

DELETE test1

查看运行结果：

{
  "acknowledged" : true
}

（2）删除索引中文档

DELETE test3/_doc/1

查看运行结果：

{
  "_index" : "test3",
  "_type" : "_doc",
  "_id" : "1",
  "_version" : 4,
  "result" : "deleted",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 3,
  "_primary_term" : 1
}

六、文档CRUD(增删改查)

1、添加数据：PUT

PUT /xiaobai/user/1
{
  "name":"小白",
  "age":30,
  "desc":"一顿操作猛如虎，一看工资2500",
  "tags":["技术宅","直男"]
}

查看运行结果：

#! [types removal] Specifying types in document index requests is deprecated, use the typeless endpoints instead (/{index}/_doc/{id}, /{index}/_doc, or /{index}/_create/{id}).
{
  "_index" : "xiaobai",
  "_type" : "user",
  "_id" : "1",
  "_version" : 1,
  "result" : "created",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 0,
  "_primary_term" : 1
}

插件查看：

同样的方法添加一些数据：

2、获取数据：GET

GET xiaobai/user/1

查看运行结果：

#! [types removal] Specifying types in document get requests is deprecated, use the /{index}/_doc/{id} endpoint instead.
{
  "_index" : "xiaobai",
  "_type" : "user",
  "_id" : "1",
  "_version" : 1,
  "_seq_no" : 0,
  "_primary_term" : 1,
  "found" : true,
  "_source" : {
    "name" : "小白",
    "age" : "30",
    "desc" : "一顿操作猛如虎，一看工资2500",
    "tags" : [
      "技术宅",
      "直男"
    ]
  }
}

3、更新数据：PUT/POST

(1)PUT修改：全量字段更新

1号数据name：小白 -> 白神

PUT /xiaobai/user/1
{
  "name":"白神",
  "age":"30",
  "desc":"一顿操作猛如虎，一看工资2500",
  "tags":["技术宅","直男"]
}

查看运行结果：

#! [types removal] Specifying types in document index requests is deprecated, use the typeless endpoints instead (/{index}/_doc/{id}, /{index}/_doc, or /{index}/_create/{id}).
{
  "_index" : "xiaobai",
  "_type" : "user",
  "_id" : "1",
  "_version" : 2,
  "result" : "updated",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 5,
  "_primary_term" : 2
}

（2）POST _update：指定字段更新（推荐使用）

POST /xiaobai/user/1/_update
{
  "doc":{
    "name":"小白java"
  }
}

查看运行结果：

#! [types removal] Specifying types in document update requests is deprecated, use the endpoint /{index}/_update/{id} instead.
{
  "_index" : "xiaobai",
  "_type" : "user",
  "_id" : "1",
  "_version" : 5,
  "result" : "updated",
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 0
  },
  "_seq_no" : 8,
  "_primary_term" : 2
}

4、简单的搜索：GET _searcher

text类型可以根据字段分词搜索，keyword关键词不会处理分词器

GET /xiaobai/user/_search?q=name:小白

查看运行结果：

#! [types removal] Specifying types in search requests is deprecated.
{
  "took" : 32,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 3,
      "relation" : "eq"
    },
    "max_score" : 1.9252907,
    "hits" : [
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "1",
        "_score" : 1.9252907,
        "_source" : {
          "name" : "小白",
          "age" : "30",
          "desc" : "一顿操作猛如虎，一看工资2500",
          "tags" : [
            "技术宅",
            "直男"
          ]
        }
      },
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "2",
        "_score" : 0.53899646,
        "_source" : {
          "name" : "小黑",
          "age" : "32",
          "desc" : "腹黑男猪脚",
          "tags" : [
            "旅游",
            "渣男",
            "游戏宅"
          ]
        }
      },
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "5",
        "_score" : 0.53899646,
        "_source" : {
          "name" : "小王",
          "age" : "32",
          "desc" : "社会性死亡",
          "tags" : [
            "技术宅",
            "暖男",
            "中年危机"
          ]
        }
      }
    ]
  }
}

5、复杂操作搜索： _searcher match - 分词模糊匹配

{
  "query":{
    "match": {
      "name": "钻石王老五"
    }
  }
}

查看运行结果：

{
    "took": 2,
    "timed_out": false,
    "_shards": {
        "total": 1,
        "successful": 1,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": {
            "value": 4,
            "relation": "eq"
        },
        "max_score": 3.0311832,
        "hits": [
            {
                "_index": "xiaobai",
                "_type": "user",
                "_id": "6",
                "_score": 3.0311832,
                "_source": {
                    "name": "钻石王老五",
                    "age": "32",
                    "desc": "社会性死亡",
                    "tags": [
                        "技术宅",
                        "暖男",
                        "中年危机"
                    ]
                }
            },
            {
                "_index": "xiaobai",
                "_type": "user",
                "_id": "4",
                "_score": 1.9277248,
                "_source": {
                    "name": "王五",
                    "age": "30",
                    "desc": "正宗青子",
                    "tags": [
                        "青年",
                        "吃货",
                        "旅游",
                        "胖子"
                    ]
                }
            },
            {
                "_index": "xiaobai",
                "_type": "user",
                "_id": "7",
                "_score": 1.6832076,
                "_source": {
                    "name": "钻石李老四",
                    "age": "32",
                    "desc": "社会性死亡",
                    "tags": [
                        "技术宅",
                        "暖男",
                        "中年危机"
                    ]
                }
            },
            {
                "_index": "xiaobai",
                "_type": "user",
                "_id": "5",
                "_score": 1.2623059,
                "_source": {
                    "name": "钻石123",
                    "age": "32",
                    "desc": "社会性死亡",
                    "tags": [
                        "技术宅",
                        "暖男",
                        "中年危机"
                    ]
                }
            }
        ]
    }
}

6、复杂操作搜索： _searcher match_phrase - 完整模糊匹配

GET /xiaobai/user/_search
{
  "query":{
    "match_phrase": {
      "name": "钻石王老五"
    }
  }
}

查看运行结果：

#! [types removal] Specifying types in search requests is deprecated.
{
  "took" : 0,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 1,
      "relation" : "eq"
    },
    "max_score" : 3.0311837,
    "hits" : [
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "6",
        "_score" : 3.0311837,
        "_source" : {
          "name" : "钻石王老五",
          "age" : "32",
          "desc" : "社会性死亡",
          "tags" : [
            "技术宅",
            "暖男",
            "中年危机"
          ]
        }
      }
    ]
  }
}

7、复杂操作搜索： _searcher term - 完成精确匹配

GET xiaobai/user/_search
{
  "query":{
    "term": {
      "name.keyword": "钻石王老五"
    }
  }
}

查看运行结果：

#! [types removal] Specifying types in search requests is deprecated.
{
  "took" : 0,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 1,
      "relation" : "eq"
    },
    "max_score" : 1.2039728,
    "hits" : [
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "3",
        "_score" : 1.2039728,
        "_source" : {
          "name" : "钻石王老五",
          "age" : "19",
          "desc" : "社会性死亡",
          "tags" : [
            "技术宅",
            "暖男"
          ]
        }
      }
    ]
  }
}

8、复杂操作搜索： _searcher _source - 过滤展示结果

GET /xiaobai/user/_search
{
  "query":{
    "match_phrase": {
      "name": "钻石王老五"
    }
  },
    "_source":["name","desc"]
}

查看运行结果：

#! [types removal] Specifying types in search requests is deprecated.
{
  "took" : 11,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 1,
      "relation" : "eq"
    },
    "max_score" : 3.0311837,
    "hits" : [
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "6",
        "_score" : 3.0311837,
        "_source" : {
          "name" : "钻石王老五",
          "desc" : "社会性死亡"
        }
      }
    ]
  }
}

9、复杂操作搜索： _searcher sort - 排序（desc/asc）

GET xiaobai/user/_search
{
  "query":{
    "match_phrase": {
      "name": "钻石"
    }
  },
    "sort":[
      {
        "age":{
          "order":"desc"
        }
      }
      ]
}

查看运行结果：

#! [types removal] Specifying types in search requests is deprecated.
{
  "took" : 1,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 3,
      "relation" : "eq"
    },
    "max_score" : null,
    "hits" : [
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "2",
        "_score" : null,
        "_source" : {
          "name" : "钻石李老四",
          "age" : "32",
          "desc" : "社会性死亡",
          "tags" : [
            "技术宅",
            "暖男",
            "中年危机"
          ]
        },
        "sort" : [
          32
        ]
      },
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "4",
        "_score" : null,
        "_source" : {
          "name" : "钻石123",
          "age" : "28",
          "desc" : "废物一个",
          "tags" : [
            "技术宅"
          ]
        },
        "sort" : [
          28
        ]
      },
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "3",
        "_score" : null,
        "_source" : {
          "name" : "钻石王老五",
          "age" : "19",
          "desc" : "社会性死亡",
          "tags" : [
            "技术宅",
            "暖男"
          ]
        },
        "sort" : [
          19
        ]
      }
    ]
  }
}

10、复杂操作搜索： _searcher from size - 分页查询

GET xiaobai/user/_search
{
  "query":{
    "match_phrase": {
      "name": "钻石"
    }
  },
    "from":0,
    "size":2
}

查看运行结果：

#! [types removal] Specifying types in search requests is deprecated.
{
  "took" : 0,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 3,
      "relation" : "eq"
    },
    "max_score" : 0.77691567,
    "hits" : [
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "4",
        "_score" : 0.77691567,
        "_source" : {
          "name" : "钻石123",
          "age" : "28",
          "desc" : "废物一个",
          "tags" : [
            "技术宅"
          ]
        }
      },
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "2",
        "_score" : 0.62774795,
        "_source" : {
          "name" : "钻石李老四",
          "age" : "32",
          "desc" : "社会性死亡",
          "tags" : [
            "技术宅",
            "暖男",
            "中年危机"
          ]
        }
      }
    ]
  }
}

11、复杂操作搜索： _searcher bool - 联合查询 -must - 所有条件均符合

GET xiaobai/user/_search
{
  "query":{
    "bool": {
      "must":[{
        "match":{
          "name":"钻石王老五"
        }
      },
      {
        "match":{
          "age":28
        }
      }
        ]
    }
  }
}

查看运行结果：

#! [types removal] Specifying types in search requests is deprecated.
{
  "took" : 1,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 1,
      "relation" : "eq"
    },
    "max_score" : 1.7769157,
    "hits" : [
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "4",
        "_score" : 1.7769157,
        "_source" : {
          "name" : "钻石123",
          "age" : "28",
          "desc" : "废物一个",
          "tags" : [
            "技术宅"
          ]
        }
      }
    ]
  }
}

12、复杂操作搜索：_searcher bool - 联合查询 - should - 满足任意一个条件

GET xiaobai/user/_search
{
  "query":{
    "bool": {
      "should":[{
        "match":{
          "name":"小白"
        }
      },
      {
        "match":{
          "age":28
        }
      }
        ]
    }
  }
}

查看运行结果：

#! [types removal] Specifying types in search requests is deprecated.
{
  "took" : 1,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 2,
      "relation" : "eq"
    },
    "max_score" : 2.9761126,
    "hits" : [
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "1",
        "_score" : 2.9761126,
        "_source" : {
          "name" : "小白",
          "age" : 30,
          "desc" : "一顿操作猛如虎，一看工资2500",
          "tags" : [
            "技术宅",
            "直男"
          ]
        }
      },
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "4",
        "_score" : 1.0,
        "_source" : {
          "name" : "钻石123",
          "age" : "28",
          "desc" : "废物一个",
          "tags" : [
            "技术宅"
          ]
        }
      }
    ]
  }
}

13、复杂操作搜索：_searcher bool - 联合查询 - must_not - 不满足

GET xiaobai/user/_search
{
  "query":{
    "bool": {
      "must_not":[{
        "match":{
          "name":"小白"
        }
      },
      {
        "match":{
          "age":28
        }
      }
        ]
    }
  }
}

查看运行结果：

#! [types removal] Specifying types in search requests is deprecated.
{
  "took" : 1,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 2,
      "relation" : "eq"
    },
    "max_score" : 0.0,
    "hits" : [
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "2",
        "_score" : 0.0,
        "_source" : {
          "name" : "钻石李老四",
          "age" : "32",
          "desc" : "社会性死亡",
          "tags" : [
            "技术宅",
            "暖男",
            "中年危机"
          ]
        }
      },
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "3",
        "_score" : 0.0,
        "_source" : {
          "name" : "钻石王老五",
          "age" : "19",
          "desc" : "社会性死亡",
          "tags" : [
            "技术宅",
            "暖男"
          ]
        }
      }
    ]
  }
}

14、复杂操作搜索：_searcher bool - 联合查询 - filter - 过滤

gt(>) gte(>=) lt(<) lte(<=)

GET xiaobai/user/_search
{
  "query":{
    "bool": {
      "must":[{
        "match":{
          "name":"钻石"
        }
      }
        ],"filter": 
          {"range": {
            "age": {
              "gte": 10,
              "lte": 30
            }
          }}
}

}
}

查看运行结果：

#! [types removal] Specifying types in search requests is deprecated.
{
  "took" : 1,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 2,
      "relation" : "eq"
    },
    "max_score" : 0.77691567,
    "hits" : [
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "4",
        "_score" : 0.77691567,
        "_source" : {
          "name" : "钻石123",
          "age" : "28",
          "desc" : "废物一个",
          "tags" : [
            "技术宅"
          ]
        }
      },
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "3",
        "_score" : 0.62774795,
        "_source" : {
          "name" : "钻石王老五",
          "age" : "19",
          "desc" : "社会性死亡",
          "tags" : [
            "技术宅",
            "暖男"
          ]
        }
      }
    ]
  }
}

15、复杂操作搜索：_searcher match - 匹配多个标签分词（空格隔开）

GET xiaobai/user/_search
{
  "query":{
    "match": {
      "tags":"男 技术宅"
    }
  }
}

查看运行结果：

#! [types removal] Specifying types in search requests is deprecated.
{
  "took" : 1,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 4,
      "relation" : "eq"
    },
    "max_score" : 0.6987428,
    "hits" : [
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "1",
        "_score" : 0.6987428,
        "_source" : {
          "name" : "小白",
          "age" : 30,
          "desc" : "一顿操作猛如虎，一看工资2500",
          "tags" : [
            "技术宅",
            "直男"
          ]
        }
      },
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "3",
        "_score" : 0.6987428,
        "_source" : {
          "name" : "钻石王老五",
          "age" : "19",
          "desc" : "社会性死亡",
          "tags" : [
            "技术宅",
            "暖男"
          ]
        }
      },
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "2",
        "_score" : 0.5337937,
        "_source" : {
          "name" : "钻石李老四",
          "age" : "32",
          "desc" : "社会性死亡",
          "tags" : [
            "技术宅",
            "暖男",
            "中年危机"
          ]
        }
      },
      {
        "_index" : "xiaobai",
        "_type" : "user",
        "_id" : "4",
        "_score" : 0.38828292,

elasticsearch7使用指导

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