doc 文档的增删改查

阳光穿透心脏的1/2处 2022-10-22 07:54 156阅读 0赞

# 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
        }
    }

### 删除文档 ###

DELETE localhost:9200/nba/_doc/1