一.创建索引

PUT twitter

{

"settings" : {

"index" : {

"number_of_shards" : 3,

"number_of_replicas" : 2

}

}

}

语法规则:https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-create-index.html

备注:

1.number_of_shards:索引分片数

2.number_of_replicas:索引副本数

3.index可以简写

具体索引字段见:https://www.elastic.co/guide/en/elasticsearch/reference/current/index-modules.html

二.获取索引

1.GET /twitter

{

"twitter": {

"aliases": {},

"mappings": {},

"settings": {

"index": {

"creation_date": "1505635897531",

"number_of_shards": "3",

"number_of_replicas": "2",

"uuid": "VpozplmDTIObzv-lUXryuw",

"version": {

"created": "5060099"

},

"provided_name": "twitter"

}

}

}

}

2.GET twitter/[_settings|_mappings|_aliases] - 分别获取与之对应的内容节点信息

三.删除索引

DELETE /twitter

四.关闭和开启索引

1.关闭索引

POST /twitter/_close

2.开启索引

POST /twitter/_open

五.创建索引类型

PUT twitter

{

"mappings": {

"tweet": {

"properties": {

"message": {

"type": "text"

}

}

}

}

}

注:如果索引不存在则创建,已存在则会报错.如下:

{

"error": {

"root_cause": [

{

"type": "index_already_exists_exception",

"reason": "index [twitter/Exa9xht9SUe_djnaOhX4fA] already exists",

"index_uuid": "Exa9xht9SUe_djnaOhX4fA",

"index": "twitter"

}

],

"type": "index_already_exists_exception",

"reason": "index [twitter/Exa9xht9SUe_djnaOhX4fA] already exists",

"index_uuid": "Exa9xht9SUe_djnaOhX4fA",

"index": "twitter"

},

"status": 400

}

那么如果针对已存在的索引增加一个类型?

PUT twitter/_mapping/user

{

"properties": {

"name": {

"type": "text"

}

}

}

批量给多个索引增加一个操作类型

PUT aa,bb,cc/_mapping/test

{

"properties": {

"name": {

"type": "text"

}

}

}

文档:https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-put-mapping.html

六.获取索引类型

1.获取某个索引下单个类型

GET /twitter/_mapping/game

2.全局匹配某个类型

GET /_mapping/game

3.获取全部类型

GET /_all/_mapping

GET /_mapping

七.添加数据

PUT twitter/tweet/1

{

"user" : "kimchy",

"post_date" : "2009-11-15T14:12:12",

"message" : "trying out Elasticsearch"

}

注:

1.不存则添加否则更新.

2.索引/类型/主键ID

3.twitter/tweet/1?op_type=create只负责创建,存在则报错

8.乐观锁

PUT twitter/tweet/1?version=2

{

"message" : "elasticsearch now has versioning support, double cool!"

}

9.主键ID自增

POST twitter/tweet/

{

"user" : "kimchy",

"post_date" : "2009-11-15T14:12:12",

"message" : "trying out Elasticsearch"

}

主键ID生成格式:AV6PKkAT4fkb07FW6KlE

10.获取数据

1.正常返回数据格式

GET twitter/tweet/0

返回:

{

"_index": "twitter",

"_type": "tweet",

"_id": "1",

"_version": 4,

"found": true,

"_source": {

"user": "kimchy",

"post_date": "2009-11-15T14:12:12",

"message": "trying out Elasticsearch"

}

}

2.获取source原数据

GET /twitter/tweet/1/_source

{

"_index": "twitter",

"_type": "tweet",

"_id": "1_source=false",

"found": false

}

文档:https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-get.html

11.修改数据

POST twitter/tweet/1/_update

{

"script" : {

"source": "ctx._source.user += params.user",

"lang": "painless",

"params" : {

"user" : "blue"

}

}

}

注:更新tweet类型中user字段,拼接更新.最终结果:??????blue

合并更新

POST test/type1/1/_update

{

"doc" : {

"user" : "new_name"

}

}

文档:https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-update.html

12.删除数据

DELETE /twitter/tweet/1

结语

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