Python操作MongoDB

Posted 2021-03-23 lijianming180

pymongodb操作

mongod --auth --dbpath="/usr/local/mongodb/data" --logpath="/usr/local/mongodb/logs/mongod.log" --install
#创建admin数据表
use admin
#创建管理用户的用户
db.createUser(
  {
    user: "root",
    pwd: "123456",
    roles: [ { role: "userAdminAnyDatabase", db: "admin" } ]
  }
)
#认证
db.auth('user','pass')
#切换数据表
use testdb
#创建当前数据表的操作用户
db.createUser(
  {
    user: "test",
    pwd: "123456",
    roles: [ { role: "readWrite", db: "testdb" } ]
  }
)

###

class MONGODB_CONFIG:
  HOST = "127.0.0.1"
  PORT = 27017
  DB_NAME = "testdb"
  USER_NAME = "test"
  PASSWORD = "123456"

import config
import pymongo
# 创建连接对象 ''' mongodb://localhost:27017/ '''
client = pymongo.MongoClient(host=config.MONGODB_CONFIG.HOST, port=config.MONGODB_CONFIG.PORT)
# 连接数据库
db = client[config.MONGODB_CONFIG.DB_NAME]
db.authenticate(config.MONGODB_CONFIG.USER_NAME, config.MONGODB_CONFIG.PASSWORD,mechanism='SCRAM-SHA-1')
# 连接表
collection = db.news

###

def init():
    #创建连接对象 ''' mongodb://localhost:27017/ '''
    client = pymongo.MongoClient(host='127.0.0.1',port=27017)
    #指定数据集(数据库名称) ''' client['test'] '''
    db = client.testDB
    #指定集合 ''' db['studen 大专栏  Python操作MongoDBts'] '''
    return db.students

#插入单条数据
def insert(collection,student):
    result = collection.insert(student)
    print(result)

#插入多条数据
def insert(collection,students):
    result = collection.insert(students)
    print(result)

#使用3.x推荐方法插入单条数据
def insert_one(collection,student):
    result = collection.insert_one(student)
    print(result)
    print(result.inserted_id)

#使用3.x推荐方法插入多条数据
def insert_many(collection,students):
    result = collection.insert_many(students)
    print(result)
    print(result.inserted_ids)

#查询单条数据
def find_one(collection,args):
    result = collection.find_one(args)
    print(type(result))
    print(result)

#查询多条数据
def finds(collection,args):
    results = collection.find(args)
    print(type(results))
    print(results)
    for result in results:
        print(result)

#查询记录数
def count(collection,args):
    count = collection.find(args).count()
    print(count)

#排序 ''' ASCENDING 升序  DESCENDING 降序 '''
def sort(collection,args,cending):
    results = collection.find().sort(args, cending)
    print([result[args] for result in results])

#偏移n位后查询
def skip(collection,index):
    results = collection.find().skip(index)
    print([result['name'] for result in results])

#获取n条记录
def limit(collection,index):
    results = collection.find().limit(index)
    print([result['name'] for result in results])

#更新数据库
def update(condition,student):
    result = collection.update(condition, student)
    print(result)

#删除数据 delete_one() delete_many()
def remove(collection,args):
    result = collection.remove(args)
    print(result)