es文档操作命令

文档操作 documents

创建数据（put）

向 user 索引下创建3条数据

PUT /user/_doc/1
{"name":"zhangsan","age":18,"sex":"男","info":"一顿操作猛如虎，一看工资2500","tags":["计算机","运动","动漫"]
}
PUT /user/_doc/2
{"name":"kunkun","age":3,"sex":"男","info":"吉你实在实在太美","tags":["唱","跳","篮球"]
}
PUT /user/_doc/3
{"name":"lisi","age":66,"sex":"女","info":"清晨下的第一杯水","tags":["a","b","c"]
}

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当执行命令时，如果数据不存在，则新增该条数据，如果数据存在则修改该条数据。

获取数据（get）

# get 索引名/类型名/id
GET /user/_doc/1

结果：

{"_index" : "user","_type" : "_doc","_id" : "1","_version" : 2,"_seq_no" : 3,"_primary_term" : 1,"found" : true,"_source" : {"name" : "zhangsan","age" : 18,"sex" : "男","info" : "一顿操作猛如虎，一看工资2500","tags" : ["计算机","运动","动漫"]}
}

更新数据（update）

覆盖更新（put）

PUT /user/_doc/1
{# 更新的数据"name":"wangwu"  
}

结果：

{"_index" : "user","_type" : "_doc","_id" : "1","_version" : 2,			// 代表数据更改的次数"result" : "updated","_shards" : {"total" : 2,"successful" : 1,"failed" : 0},"_seq_no" : 6,"_primary_term" : 1
}

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从结果中可以看到，我们更新的数据并不是更改了指定的字段，而是直接覆盖掉了原来的数据，这不符合我们的一般习惯，如果想要更新指定的字段，需要使用 post + _update 方式来更新

局部更新（post）

使用 post 命令，在 id 后面跟 _update，要修改的内容放到 doc 文档中即可。

POST /user/_doc/3/_update
{"doc":{"name":"zhangsan"}
}

结果：

#! Deprecation: [types removal] Specifying types in document update requests is deprecated, use the endpoint /{index}/_update/{id} instead.
{"_index" : "user","_type" : "_doc","_id" : "3","_version" : 2,"result" : "updated","_shards" : {"total" : 2,"successful" : 1,"failed" : 0},"_seq_no" : 7,"_primary_term" : 1
}

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条件查询

使用 GET 命令，后加上_search?q=要查询的条件

# get /索引名/文档名/_search查询条件
GET /user/_doc/_search?q=name:zhangsan

结果：

#! Deprecation: [types removal] Specifying types in search requests is deprecated.
{"took" : 2,"timed_out" : false,"_shards" : {"total" : 1,"successful" : 1,"skipped" : 0,"failed" : 0},"hits" : {"total" : {"value" : 1,"relation" : "eq"},"max_score" : 0.9808291,"hits" : [{"_index" : "user","_type" : "_doc","_id" : "3","_score" : 0.9808291,"_source" : {"name" : "zhangsan","age" : 66,"sex" : "女","info" : "清晨下的第一杯水","tags" : ["a","b","c"]}}]}
}