ElasticSearch第6节 Kibana 的Dev Too

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http://<ip>:<port>/<索引>/<类型>/<文档ID>

http://<ip>:<port>/<索引>/_doc/<文档ID>
_doc

1. 建立索引并指定配置参数

####1. 建立索引并执行
put /lib/
{
  "settings":{
    "index":{
      "number_of_shards":5,  #指定当前索引的分片数
      "number_of_replicas":0  #指定当前索引的备份数
    }
  }
}
#结果
{
  "acknowledged" : true,
  "shards_acknowledged" : true,
  "index" : "lib"
}

2. 建立索引,配置默认

put lib3
#结果：
{
  "acknowledged" : true,
  "shards_acknowledged" : true,
  "index" : "lib3"
}

# 查看索引的配置
GET lib/_settings
GET lib2/_settings
GET _all/_settings

3. PUT创建一个文档 (指定id)

# lib 是索引，user是类型，1是id
PUT /lib/user/1
{
  "first_name":"xiao",
  "second_name":"chao",
  "age":22,
  "about":"I like to build",
  "likes":["football","basketball"]
}

#获取全文档信息
GET /lib/user/1
#! Deprecation: [types removal] Specifying types in document 
#   get requests is deprecated, use the /{index}/_doc/{id} endpoint instead.
{
  "_index" : "lib",
  "_type" : "user",
  "_id" : "1",
  "_version" : 1,
  "_seq_no" : 0,
  "_primary_term" : 1,
  "found" : true,
  "_source" : {
    "first_name" : "xiao",
    "second_name" : "chao",
    "age" : 22,
    "about" : "I like to build",
    "likes" : [
      "football",
      "basketball"
    ]
  }
}

#获取文档指定字段
GET /lib/user/1?_source=age,about

4. POST生成文档（自动生成id）

#下面操作报错，新版本已经废除了type概念
! 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}).

POST /lib/user/
{
  "first_name":"haha",
  "second_name":"xixi",
  "age":23,
  "about":"I like to drink",
  "likes":["hello","world"]
}

#获取文档
GET /lib/user/rrZYVGsBNohMOFFbhAxR

5.PUT 覆盖更新

PUT /lib/user/1
{
  "first_name":"xiao",
  "second_name":"chao",
  "age":32,
  "about":"I like to build",
  "likes":["football","basketball"]
}

6. 专项属性更新

POST /lib/user/_update/1
{
  "doc": {
    "age":5,
    "about":"I like to build",
    "likes":["football"]
  }
}

7. 删除

#删除文档
DELETE /lib/user/1 
#删除索引
DELETE /lib

ES7.0.0 版本请求

---

不再有type，_doc是写死的

PUT /lib2/_doc/1     #增
DELETE /lib2/_doc/1  #删
POST lib2/_doc/1     #改
GET /lib2/_doc/1     #查

使用es提供的Multi Get API批量获取

通过es提供的Multi Get API可以通过：索引名、类型名、文档id一次得到一个文档集合。文档可以来自同一索引库，也可以来自不同的索引库。

方式一：使用curl命令：

$ curl  -H "Content-Type: application/json" -XPOST http://192.168.249.104:9200/_mget -d '{
 "docs":[
    {
      "_index":"lib1",
      "_id":"2"
    },
    {
      "_index":"lib2",
      "_id":"1"
    }
  ]
}'

方式二：kibana的Dev Tools GET方式

http://192.168.249.104:5601

指定索引_index 和 _id

GET /_mget
{
  "docs":[
    {
      "_index":"lib1",
      "_id":"2"
    },
    {
      "_index":"lib2",
      "_id":"1"
    },
    {
      "_index":"lib",
      "_type":"user",   #注意：新版本中不再有type了。下面结果中没有体现这个
      "_id":"1"
    }
  ]
}

{
  "docs" : [
    {
      "_index" : "lib1",
      "_type" : "_doc",
      "_id" : "2",
      "_version" : 1,
      "_seq_no" : 0,
      "_primary_term" : 1,
      "found" : true,
      "_source" : {
        "name" : "guchao",
        "age" : 22
      }
    },
    {
      "_index" : "lib2",
      "_type" : "_doc",
      "_id" : "1",
      "_version" : 3,
      "_seq_no" : 7,
      "_primary_term" : 1,
      "found" : true,
      "_source" : {
        "doc" : {
          "age" : 5,
          "about" : "I like to build",
          "likes" : [
            "football"
          ]
        }
      }
    }
  ]
}

批量获取指定字段:_source

GET /_mget
{
  "docs":[
    {
      "_index":"lib1",
      "_id":"2",
      "_source":["age"]
    },
    {
      "_index":"lib2",
      "_id":"1",
      "_source":["doc"]
    },
    {
      "_index":"lib2",
      "_id":"2"
    },
    {
      "_index":"lib",
      "_type":"user",
      "_id":"1",
      "_source":["first_name"]
    }
  ]
}

相同索引的简化查询参数，将索引赋值到路径上

GET lib2/_mget
{
  "docs":[
    {"_id":"1", "_source":["doc"] },
    {"_id":"2"}
  ]
}

按文档id批量查询

GET lib2/_mget
{
  "ids":["1","2"]
}

小伦超正经_ElasticSearch 7.0.0博客