什么是REST

REST是一種軟件架構(gòu)風(fēng)格，或者說是一種規(guī)范，其強(qiáng)調(diào)HTTP應(yīng)當(dāng)以資源為中心，并且規(guī)范了URI的風(fēng)格；規(guī)范了HTTP請求動(dòng)作（GET/PUT/POST/DELETE/HEAD/OPTIONS）的使用，具有對應(yīng)的語義。
核心概念包括：

methodurl地址描述

PUT	localhost:9200/索引名稱/類型名稱/文檔id	創(chuàng)建文檔(指定文檔 id)
POST	localhost:9200/索引名稱/類型名稱	創(chuàng)建文檔(隨機(jī)文檔 id)
POST	localhost:9200/索引名稱/類型名稱/文檔id/_update	修改文檔
DELETE	localhost:9200/索引名稱/類型名稱/文檔id	刪除文檔
GET	localhost:9200/索引名稱/類型名稱/文檔id	查詢文檔通過文檔 id
POST	localhost:9200/索引名稱/類型名稱/_search	查詢所有數(shù)據(jù)

基礎(chǔ)測試

創(chuàng)建一個(gè)索引

PUT /索引名/_類型名/文檔 id
{
請求體
}

PUT /test1/type1/1 {"name":"全棧自學(xué)社區(qū)","age":12 }

返回結(jié)果

#! Deprecation: [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" : 2,"result" : "updated","_shards" : {"total" : 2,"successful" : 1,"failed" : 0},"_seq_no" : 1,"_primary_term" : 1 }

數(shù)據(jù)類型

（1）字符串類型： text, keyword （2）數(shù)字類型：long, integer, short, byte, double, float, half_float, scaled_float （3）日期：date （4）日期 納秒：date_nanos （5）布爾型：boolean （6）二進(jìn)制類型 Binary：binary （7）Range: integer_range, float_range, long_range, double_range, date_range

創(chuàng)建具體的索引規(guī)則

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

返回結(jié)果

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

GET 獲取具體信息

獲取這個(gè)規(guī)則, 可以通過 GET 獲取具體信息

GET test2

返回結(jié)果

{"test2" : {"aliases" : { },"mappings" : {"properties" : {"age" : {"type" : "long"},"birthday" : {"type" : "date"},"name" : {"type" : "text"}}},"settings" : {"index" : {"routing" : {"allocation" : {"include" : {"_tier_preference" : "data_content"}}},"number_of_shards" : "1","provided_name" : "test2","creation_date" : "1610936976952","number_of_replicas" : "1","uuid" : "qqzV0yIqR7CqT_liFewR4Q","version" : {"created" : "7100199"}}}} }

查看默認(rèn)的信息

PUT /test3/_doc/1 {"name": "全棧自學(xué)社區(qū)","age": 18,"birth": "1997-01-25" }

返回結(jié)果

{"_index" : "test3","_type" : "_doc","_id" : "1","_version" : 1,"result" : "created","_shards" : {"total" : 2,"successful" : 1,"failed" : 0},"_seq_no" : 0,"_primary_term" : 1 } GET test3 {"test3" : {"aliases" : { },"mappings" : {"properties" : {"age" : {"type" : "long"},"birth" : {"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" : "1610937747174","number_of_replicas" : "1","uuid" : "Hok1PejKSByKuW6ozyQpEA","version" : {"created" : "7100199"}}}} }

如果自己的文檔沒有指定, 那么es就會(huì)給我們默認(rèn)配置字段類型

其他命令

獲取 es 當(dāng)前的信息

GET _cat/indices?v

返回結(jié)果

health status index uuid pri rep docs.count docs.deleted store.size pri.store.size yellow open test2 qqzV0yIqR7CqT_liFewR4Q 1 1 0 0 208b 208b yellow open test3 Hok1PejKSByKuW6ozyQpEA 1 1 1 0 4.3kb 4.3kb green open .apm-custom-link A-jNeoZWTDKtQqpf_Kqqog 1 0 0 0 208b 208b yellow open xinze Gn2y36z2Tpq2jvxBhM0ogg 5 1 0 0 1kb 1kb green open .kibana_task_manager_1 STLFw_63S6a_t5HBC5fW9w 1 0 5 157 153.5kb 153.5kb green open .apm-agent-configuration bZJ-56bwQFKQekHd5GFdgQ 1 0 0 0 208b 208b green open .kibana-event-log-7.10.1-000001 HUjThpyTQMeJr-QSwMXNLQ 1 0 3 0 16.4kb 16.4kb green open .kibana_2 hJZflBGSSkqIgWWX_15Ofg 1 0 48 69 4.2mb 4.2mb yellow open test1 a8pjIRrfTsqtTmaAaXRZKg 5 1 1 1 6.2kb 6.2kb green open .kibana_1 Gi93gw00SzSFVN5dQxrLig 1 0 1 0 5.1kb 5.1kb green open .tasks UDpsMCO1SyasUGAJTqxFgw 1 0 1 0 6.9kb 6.9kb

修改索引
依舊使用 PUT 然后覆蓋

POST /test3/_doc/1/_update {"name": "全棧自學(xué)社區(qū)關(guān)注就對了" }

刪除索引

DELETE test1

文章已上傳gitee https://gitee.com/codingce/hexo-blog
項(xiàng)目地址: https://github.com/xzMhehe/codingce-java

總結(jié)

以上是生活随笔為你收集整理的ES的Rest风格的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。