ElasticSearch 增删改查手册

1 查看es中有哪些索引

GET /_cat/indices?v

2 增加一个索引(库)

PUT /movie_index

3 删除一个索引

ES 是不删除也不修改任何数据

DELETE /movie_index

4 新增文档

PUT /movie_index/movie/1
{ "id":1,
  "name":"operation red sea",
  "doubanScore":8.5,
  "actorList":[  
	{"id":1,"name":"zhang yi"},
	{"id":2,"name":"hai qing"},
	{"id":3,"name":"zhang han yu"}
	]
}
PUT /movie_index/movie/2
{
  "id":2,
  "name":"operation meigong river",
  "doubanScore":8.0,
  "actorList":[  
	{"id":3,"name":"zhang han yu"}
  ]
}

PUT /movie_index/movie/3
{
  "id":3,
  "name":"incident red sea",
  "doubanScore":5.0,
  "actorList":[  
	{"id":4,"name":"zhang chen"}
  ]
}

如果之前没建过index或者type，es 会自动创建。

5 直接用id查找

GET movie_index/movie/1

6 修改—整体替换

和新增没有区别

PUT /movie_index/movie/3
{
  "id":"3",
  "name":"incident red sea",
  "doubanScore":"5.0",
  "actorList":[  
	{"id":"1","name":"zhang chen"}
	]
}

7修改—某个字段

POST movie_index/movie/3/_update
{ 
  "doc": {
    "doubanScore":"7.0"
  } 
}

8 删除一个document

DELETE movie_index/movie/3

9 搜索type全部数据

GET movie_index/movie/_search

10 按条件查询(全部)

GET movie_index/movie/_search
{
  "query":{
    "match_all": {}
  }
}

11 按分词查询

GET movie_index/movie/_search
{
  "query":{
    "match": {"name":"red"}
  }
}

12 按分词子属性查询

GET movie_index/movie/_search
{
  "query":{
    "match": {"actorList.name":"zhang"}
  }

13 match phrase

GET movie_index/movie/_search
{
    "query":{
      "match_phrase": {"name":"operation red"}
    }
}

14 fuzzy查询

GET movie_index/movie/_search
{
    "query":{
      "fuzzy": {"name":"rad"}
    }
}

15 过滤–查询后过滤

GET movie_index/movie/_search
{
    "query":{
      "match": {"name":"red"}
    },
    "post_filter":{
      "term": {
        "actorList.id": 3
      }
    }
}

16 过滤–查询前过滤（推荐）

GET movie_index/movie/_search
{ 
   "query":{
        "bool":{
          "filter":[ {"term": {  "actorList.id": "1"  }},
                     {"term": {  "actorList.id": "3"  }}
           ], 
           "must":{"match":{"name":"red"}}
         }
    }
}

17 过滤–按范围过滤

GET movie_index/movie/_search
{
   "query": {
     "bool": {
       "filter": {
         "range": {
            "doubanScore": {"gte": 8}
         }
       }
     }
   }
}

关于范围操作符：
gt 大于
lt 小于
gte 大于等于
lte 小于等于

18 排序

GET movie_index/movie/_search
{
  "query":{
    "match": {"name":"red sea"}
  }
  , "sort": [
    {
      "doubanScore": {
        "order": "desc"
      }
    }
  ]
}

19 分页查询

GET movie_index/movie/_search
{
  "query": { "match_all": {} },
  "from": 1,
  "size": 1
}

20 指定查询的字段

GET movie_index/movie/_search
{
  "query": { "match_all": {} },
  "_source": ["name", "doubanScore"]
}

21 高亮

GET movie_index/movie/_search
{
    "query":{
      "match": {"name":"red sea"}
    },
    "highlight": {
      "fields": {"name":{} }
    }
    
}

22 java客户端

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
		</dependency>

		<!-- https://mvnrepository.com/artifact/io.searchbox/jest -->
		<dependency>
			<groupId>io.searchbox</groupId>
			<artifactId>jest</artifactId>
			<version>5.3.3</version>
		</dependency>


		<!-- https://mvnrepository.com/artifact/net.java.dev.jna/jna -->
		<dependency>
			<groupId>net.java.dev.jna</groupId>
			<artifactId>jna</artifactId>
			<version>4.5.1</version>
		</dependency>

23 复杂查询

先过滤，后查询

"query":{
	"bool":{
	"filter":[ {"term": {  "actorList.id": "1"  }},{"term": {  "actorList.id": "3"  }}], 
		   "must":[{"match":{"name":"red"}}]
	}
	}
	"query": {
	        "bool": { 
	"filter": [{"terms":{ "actorList.id": [1,3]}}] , 
	"must": [{"match": {"name": "red"}}]
	}
}

创建mapping
mappings movie properties

PUT gmall
{
  "mappings": {
    "SkuInfo":{
      "properties": {
        "id":{
          "type": "keyword"
          , "index": false
        },
        "price":{
          "type": "double"
        },
         "skuName":{
          "type": "text",
          "analyzer": "ik_max_word"
        },
        "skuDesc":{
          "type": "text",
          "analyzer": "ik_smart"
        },
        "catalog3Id":{
          "type": "keyword"
        },
        "skuDefaultImg":{
          "type": "keyword",
          "index": false
        },
        "skuAttrValueList":{
          "properties": {
            "valueId":{
              "type":"keyword"
            }
          }
        }
      }
    }
  }
}

查询

GET gmall/SkuInfo/_search
{
"query": {
"bool": {
"filter": [{"terms":{ "skuAttrValueList.valueId": ["46","45"]}},{"term":{"catalog3Id":"61"}}],
      "must": { "match": { "skuName": "小米" } }
}
},
"highlight": {
    "fields": {"skuName":{}}
},
"sort":{
"hotScore":{"order":"desc"}},
  "aggs": { "groupby_attr": {"terms": {"field": "skuAttrValueList.valueId" }} 
}

}

Index index = new Index.Builder(null).index("").type("").id(null).build();

如果聚合查询出现以下报错，则通过下面命令解决
Err: fielddata is disabled on text fields by default. set fielddata=true on [aaaa]