doc 文档的增删改查

文档的增删改查

新增文档

PUT localhost:9200/nba/_doc/1
{
    "name": "hadeng",
    "team_name": "勇士",
    "position": "得分后卫",
    "play_year": "10",
    "jerse_no": "13"
}

新增自增id

使用POST,不能用PUT了

POST localhost:9200/nba/_doc/1
{ 
    "name": "hadeng",
    "team_name": "勇士",
    "position": "得分后卫",
    "play_year": "10",
    "jerse_no": "13"
}

自动创建索引

当我们创建一个文档,但是对应索引不存在的时候，

可以自动创建索引, 这个能力需要打开。

# 查看集群配置 查看auto_create_index
# 不存在或者为True的时候,会自动创建索引
GET http://localhost:9200/_cluster/settings
# 修改
PUT http://localhost:9200/_cluster/settings
{ 
  "persistent": { 
  "action.auto_create_index": "false"
  }
}

指定操作

# 当我们有id=1的文档的时候,此操作会修改文档
PUT localhost:9200/nba/_doc/1
{ 
    "name": "大胡子",
    "team_name": "勇士",
    "position": "得分后卫",
    "play_year": "10",
    "jerse_no": "13"
}
# 如果我们不想修改,只想创建,可以指定操作
PUT localhost:9200/nba/_doc/1?op_type=create
{ 
"name":"哈登",
"team_name":"火箭",
"position":"得分后卫",
"play_year":"10",
"jerse_no":"13"
}

查看文档

# 查看指定ID文档
GET localhost:9200/nba/_doc/1
# 查看多个ID文档 
POST localhost:9200/_mget
{ 
  "docs" : [
    { 
        "_index" : "nba",
        "_type" : "_doc",
        "_id" : "1"
    },
    { 
        "_index" : "nba",
        "_type" : "_doc",
        "_id" : "2"
    }
  ]
}
# URL指定索引
POST localhost:9200/nba/_mget
{ 
    "docs": [
        { 
            "_type": "_doc",
            "_id": "1"
        },
        { 
            "_type": "_doc",
            "_id": "2"
        }
    ]
}
# URL指定索引和类型
POST localhost:9200/nba/_doc/_mget
{ 
    "docs": [
        { 
            "_id": "1"
        },
        { 
            "_id": "2"
        }
    ]
}
# 最终简便
GET localhost:9200/nba/_doc/_mget
{ 
  "ids" : ["1", "2"]
}

修改文档

POST localhost:9200/nba/_update/1
{ 
    "doc": { 
        "name": "哈登",
        "team_name": "勇士",
        "position": "控卫",
        "play_year": "10",
        "jerse_no": "13"
    }
}

向_source新增一个字段

# 新增字段
POST localhost:9200/nba/_update/1
{ 
  "script": "ctx._source.age = 18"
}
# 删除
POST localhost:9200/nba/_update/1
{ 
"script": "ctx._source.remove(\"age\")"
}
# 更新, 获取到原值,并+4
POST localhost:9200/nba/_update/1
{ 
    "script": { 
        "source": "ctx._source.age += params.age",
        "params": { 
            "age": 4
        }
    }
}
# 存在则只需更新逻辑，不存在则执行upsert
POST localhost:9200/nba/_update/3
{ 
    "script": { 
        "source": "ctx._source.allstar += params.allstar",
        "params": { 
            "allstar": 4
        }
    },
    "upsert": { 
        "allstar": 1
    }
}