ElasticSearch8.x操作记录

ElasticSearch8.x操作记录

文档内容来自于尚硅谷海波老师的ElasticSearch教程课，在Kibana中的一些操作演示

以下为在文档中的相关操作记录

1.索引操作

#创建索引
#PUT 索引名称
PUT test_index

#PUT 索引
#增加配置：JSON格式的主题内容
PUT test_index_1
{
   
   
  "aliases": {
   
   
    "test1": {
   
   }
  }
}

#删除索引
#delete 索引名称
DELETE test_index_1

#修改索引配置
#ES不允许修改索引信息
POST test_index_1
{
   
   
  "aliases": {
   
   
    "test1": {
   
   }
  }
}

#HEAD索引 （判读索引是否存在）HTTP状态码 200， 404
HEAD test_index

#查询索引
GET test_index
GET test_index_1
GET test1

#查询所有索引
GET _cat/indices

#创建文档（索引数据）--增加唯一性标识(手动：PUT，后面需要自己添加/自动；POST自动生成，不需要再后面添加)
#首先需要先创建索引
PUT index_doc

PUT index_doc/_doc/1001
{
   
   
  "id": 1001,
  "name": "zhangsan",
  "age": 30
}

POST index_doc/_doc
{
   
   
  "id": 1002,
  "name": "lisi",
  "age": 14
}

2.文档操作

#查询文档
GET index_doc/_doc/1001

#查询当前索引中所有的文档数据
GET index_doc/_search

#修改文档数据
PUT index_doc/_doc/1001
{
   
   
  "id": 100111,
  "name": "zhangsan",
  "age": 30,
  "tel": "15123392594"
}
#POST修改数据
POST index_doc/_doc/okBdhIQB7PHEeADHmDqa
{
   
   
  "id": 1003,
  "name": "wangwu",
  "age": 22
}

#删除数据
DELETE index_doc/_doc/okBdhIQB7PHEeADHmDqa

#以下操作是不被允许的
DELETE index_doc/_doc

3.文档搜索

#增加索引
PUT test_query

DELETE test_query
#添加数据
PUT test_query/_bulk
{
   
   "index":{
   
   "_index": "test_query", "_id":"1001"}}
{
   
   "id":"1001", "name": "zhang san", "age": 30}
{
   
   "index":{
   
   "_index": "test_query", "_id":"1002"}}
{
   
   "id":"1002", "name": "li si", "age": 40}
{
   
   "index":{
   
   "_index": "test_query", "_id":"1003"}}
{
   
   "id":"1003", "name": "wang wu", "age": 50}
{
   
   "index":{
   
   "_index": "test_query", "_id":"1004"}}
{
   
   "id":"1004", "name": "zhangsan", "age": 30}
{
   
   "index":{
   
   "_index": "test_query", "_id":"1005"}}
{
   
   "id":"1005", "name": "lisi", "age": 40}
{
   
   "index":{
   
   "_index": "test_query", "_id":"1006"}}
{
   
   "id":"1006", "name": "wangwu", "age": 50}

#Match是分词查询，ES会将数据分词（关键词）保存
#zhang san
GET test_query/_search
{
   
   
  "query": {
   
   
    "match": {
   
   
      "name": "zhang san"
    }
  }
}

GET test_query/_search
{
   
   
  "query": {
   
   
    "term": {
   
   
      "name": {
   
   
        "value": "zhang san"
      }
    }
  }
}

#对查询结果字段进行限制
GET test_query/_search
{
   
   
  "_source": ["name", "age"], 
  "query": {
   
   
    "match": {
   
   
      "name": "zhang san"
    }
  }
}

#组合多个条件 or
GET test_query/_search
{
   
   
  "query": {
   
   
    "bool": {
   
   
      "should": [
        {
   
   
          "match": {
   
   
            "name": "zhang"
          }
        },
        {
   
   
          "match": {
   
   
            "age": "40"
          }
        }
      ]
    }
  }
}

# 排序后查询
GET test_query/_search
{
   
   
  "query": {
   
   
    "match": {
   
   
      "name": "zhang li"
    }
  },
  "sort": [
    {
   
   
      "age": {
   
   
        "order": "desc"
      }
    }
  ]
}

#分页查询
GET test_query/_search
{
   
   
  "query": {
   
   
    "match_all": {
   
   }
  },
  "from": 4,
  "size": 2
}

4.聚合搜索

# 分组查询
GET test_query/_search
{
   
   
  "aggs": {
   
   
    "ageGroup": {
   
   
      "terms": {
   
   
        "field": "age"
      }
    }
  },
  "size": 0
}

# 分组后聚合（求和）
GET test_query/_search
{
   
   
  "aggs": {
   
   
    "ageGroup": {
   
   
      "terms": {
   
   
        "field": "age"
      },
      "aggs": {
   
   
        "ageSum": {
   
   
          "sum": {
   
   
            "field": "age"
          }
        }
      }
    }
  },
  "size": 0
}

# 求年龄平均值
GET test_query/_search
{
   
   
  "aggs": {
   
   
    "avgAge": {
   
   
      "avg": {
   
   
        "field": "age"
      }
    }
  },
  "size": 0
}

# 获取前几名操作
GET test_query/_search
{
   
   
  "aggs": {
   
   
    "top3": {
   
   
      "top_hits": {
   
   
        "sort": [
          {
   
   
            "age": {
   
   
            "order": "desc"
          }
          }
        ], 
        "size": 3
      }
    }
  },
  "size": 0
}

5.索引模板

PUT test_temp

GET test_temp

PUT test_temp_1
{
   
   
  "settings": {
   
   
    "number_of_shards": 2
  }
}

GET test_temp_1

#创建模板
PUT _template/mytemplate
{
   
   
  "index_patterns": [
    "my*"  
  ],
  "settings": {
   
   
    "index": {
   
   
      "number_of_shards" : "2"
    }
  },
  "mappings": {
   
   
    "properties": {
   
   
      "now": {
   
   
        "type": "date",
        "format": "yyyy/MM/dd"
      }
    }
  }
}

#查看模板
GET _template/mytemplate

PUT test_temp_2
GET test_temp_2

# 匹配模板规则，以my开头
PUT my_test_temp
GET my_test_temp

#删除模板
DELETE _template/mytemplate

6.中文分词

#分词操作