elasticSearch基础命令

创建索引：7版本以上：一个索引中默认只包含一个名为_doc的类型

#默认创建包含一个名为_doc类型的索引
PUT /users

#（一般创建索引时指定mapping，因为包含默认的_doc类型）
PUT /users
{
  "mappings": {
    "properties": {
      "id": {
        "type": "keyword"
      },
      "name": {
        "type": "text"
      },
      "age": {
        "type": "short"
      },
      "address": {
        "type": "text"
      },
      "date": {
        "type": "date"
      }
    }
  }
}

查看所有索引

GET /_cat/indices?v

删除索引

#删除指定索引
DELETE /users
#删除所有索引（慎用会删除es系统索引）
DELETE /*

查看索引

#查看指定
GET /users
#查看所有索引
GET /*

创建类型：其实就是在创建索引时就默认会创建一个名为_doc的类型

PUT /users
{
  "mappings": {
    "properties": {
      "id": {
        "type": "keyword"
      },
      "name": {
        "type": "text"
      },
      "age": {
        "type": "short"
      },
      "address": {
        "type": "text"
      },
      "date": {
        "type": "date"
      }
    }
  }
}

查看类型mapping

GET /users/_mapping

插入数据时指定_id

#插入数据指定_id
PUT /users/_doc/2
{
  "id": 1,
  "name": "zhangsan",
  "age": 20,
  "address": "四川省成都市",
  "birth": "2021-01-10"
}

自动生成_id

POST/users/_doc
{
  "id": 1,
  "name": "zhangsan",
  "age": 20,
  "address": "四川省成都市",
  "birth": "2021-01-10"
}

查询数据

#指定_id
GET /users/_doc/1
#查询所有
GET /users/_doc/_search

删除数据

DELETE /users/_doc/2

更新数据

#更新数据,这种会删除原有所有字段
POST /users/_doc/1
{
  "name": "lisi"
}

#更新，可以添加新字段(会自动创建mapping)
POST /users/_doc/1/_update
{
  "doc":{
    "name": "lisi",
    "sex": "male"
  }
}

批量操作

PUT /users/_bulk
{"index":{"_id":"3"}}#创建指定_id
{"id":1,"name":"zhangsan","age":20,"address":"四川省成都市","birth":"2021-01-10"}
{"index":{}}#不指定_id
{"id":1,"name":"zhangsan","age":20,"address":"四川省成都市","birth":"2021-01-10"}
{"delete":{"_id":"2"}}
{"update":{"_id":"3"}}
  {"doc":{"address": "四川省"}}