b0116 数据库Mongodb 使用

说明

mongodb 5.0.9

linux centos 7.9, hc2108, 192.168.1.10，安装路径 /opt

安装

参考 https://www.runoob.com/mongodb/mongodb-linux-install.html

1 从 https://www.mongodb.com/try/download/community 下载

2. 上传、解压，并移动到 /opt

/opt/mongodb-linux-x86_64-rhel70-5.0.9/ , 在根目录下创建 data, log 目录。目录结构如下

3. 配置环境变量

export MONGODB_HOME=/opt/mongodb-linux-x86_64-rhel70-5.0.9
export PATH=$PATH:$MONGODB_HOME/bin

source /etc/profile

4. 启动服务

mongod --dbpath \$MONGODB_HOME/data --logpath \$MONGODB_HOME/log/mongod.log --fork

下面的支持其他机器远程连接

mongod --dbpath $MONGODB_HOME/data --logpath $MONGODB_HOME/log/mongod.log --bind_ip=0.0.0.0,:: --fork

# 检查端口是否启动

netstat -anp|grep 27017

# 查看日志是否报错

cat \$MONGODB_HOME/log/mongod.log

#启动客户端，并输入命令
mongo

db.runoob.insert({x:10})

db.runoob.find()

# 停止服务端
mongod --dbpath \$MONGODB_HOME/data --logpath \$MONGODB_HOME/log/mongod.log --shutdown

使用

命令行客户端

https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel70-5.0.9.tgz

/opt/mongodb-linux-x86_64-rhel70-5.0.9/bin


export MONGODB_HOME=/opt/mongodb-linux-x86_64-rhel70-5.0.9
export PATH=$PATH:$MONGODB_HOME/bin



conf   mongdb.conf
-------------------
port=27017

###开放给所有客户端一定要带 ,::
bind_ip=0.0.0.0,::  # 运行任意机器连接，默认是 127.0.0.1 只允许本机连接

dbpath=$MONGODB_HOME/data # 数据库存放
logpath=$MONGODB_HOME/log/mongod.log # 日志文件
fork=true # 设置后台运行
auth=false # 开启认证
maxConns = 1000
objcheck = false
logappend=false
 

-----------------
$MONGODB_HOME/bin/mongod --config $MONGODB_HOME/conf/mongdb.conf




# 启动服务端
mongod --dbpath $MONGODB_HOME/data --logpath $MONGODB_HOME/log/mongod.log --bind_ip=0.0.0.0,:: --fork



netstat -anp|grep 27017

cat $MONGODB_HOME/log/mongod.log


#启动客户端
mongo

db.runoob.insert({x:10})

db.runoob.find()

exit



# 停止服务端
mongod --dbpath $MONGODB_HOME/data --logpath $MONGODB_HOME/log/mongod.log --shutdown



>

show dbs

db


db.runoob.insert({"site":"www.google.com","name":"Google"})


db.col.insert({
    title: 'PHP 教程', 
    description: 'PHP 是一种创建动态交互性站点的强有力的服务器端脚本语言。',
    by: '菜鸟教程',
    url: 'http://www.runoob.com',
    tags: ['php'],
    likes: 200
})

db.col.insert({title: 'Java 教程', 
    description: 'Java 是由Sun Microsystems公司于1995年5月推出的高级程序设计语言。',
    by: '菜鸟教程',
    url: 'http://www.runoob.com',
    tags: ['java'],
    likes: 150
})

db.col.insert({title: 'MongoDB 教程', 
    description: 'MongoDB 是一个 Nosql 数据库',
    by: '菜鸟教程',
    url: 'http://www.runoob.com',
    tags: ['mongodb'],
    likes: 100
})


db.col.find()

db.col.find().limit(2)
db.col.find().skip(2)

db.col.find().skip(2)

db.col.find().sort({"likes":1})


db.col.find({},{"title":1})

db.col.find({},{"title":1, _id:0})


db.col.find().pretty()



use runoobdb;

show tables;



db.sites.find()


db.sites2.find()

View Code

python

db_collection

# -*- coding: utf-8 -*-


import pymongo

myclient = pymongo.MongoClient("mongodb://hc2108:27017/")

# 创建数据库
mydb = myclient["runoobdb"]
dblist = myclient.list_database_names()
print(dblist)


mycol = mydb["sites"]
collist = mydb.list_collection_names()
print(collist)


# 删除集合
# mycol.drop()

View Code

insert

# -*- coding: utf-8 -*-

# !/usr/bin/python3

import pymongo

# myclient = pymongo.MongoClient("mongodb://hc2108:27017/")
myclient = pymongo.MongoClient("hc2108",27017)
mydb = myclient["runoobdb"]
mycol = mydb["sites"]

# mydict = {"name": "RUNOOB", "alexa": "10000", "url": "https://www.runoob.com"}
#
# x = mycol.insert_one(mydict)
# print(x)
#
# # 返回文档的id
# print(x.inserted_id)

mylist = [
    {"name": "Taobao", "alexa": "100", "url": "https://www.taobao.com"},
    {"name": "QQ", "alexa": "101", "url": "https://www.qq.com"},
    {"name": "Facebook", "alexa": "10", "url": "https://www.facebook.com"},
    {"name": "知乎", "alexa": "103", "url": "https://www.zhihu.com"},
    {"name": "Github", "alexa": "109", "url": "https://www.github.com"}
]

x = mycol.insert_many(mylist)

# 输出插入的所有文档对应的 _id 值
print(x.inserted_ids)

View Code

# -*- coding: utf-8 -*-

# !/usr/bin/python3

import pymongo



myclient = pymongo.MongoClient("mongodb://hc2108:27017/")

print(myclient)

mydb = myclient["runoobdb"]

print(mydb)

mycol = mydb["site2"]

print(mycol)

# output
"""
MongoClient(host=['hc2108:27017'], document_class=dict, tz_aware=False, connect=True)
Database(MongoClient(host=['hc2108:27017'], document_class=dict, tz_aware=False, connect=True), 'runoobdb')
Collection(Database(MongoClient(host=['hc2108:27017'], document_class=dict, tz_aware=False, connect=True), 'runoobdb'), 'site2')
"""

mylist = [
    {"_id": 1, "name": "RUNOOB", "cn_name": "菜鸟教程"},
    {"_id": 2, "name": "Google", "address": "Google 搜索"},
    {"_id": 3, "name": "Facebook", "address": "脸书"},
    {"_id": 4, "name": "Taobao", "address": "淘宝"},
    {"_id": 5, "name": "Zhihu", "address": "知乎"}
]

x = mycol.insert_many(mylist)

# 输出插入的所有文档对应的 _id 值
print(x.inserted_ids)

View Code

query

# -*- coding: utf-8 -*-

# !/usr/bin/python3

import pymongo

myclient = pymongo.MongoClient("mongodb://hc2108:27017/")
mydb = myclient["runoobdb"]
mycol = mydb["sites"]

# 查询一条数据
x = mycol.find_one()

print(x)

print("---------")
y = mycol.find()
for m in y:
    print(m)

View Code

# -*- coding: utf-8 -*-

# !/usr/bin/python3

import pymongo
from bson.objectid import ObjectId

myclient = pymongo.MongoClient("mongodb://hc2108:27017/")
mydb = myclient["runoobdb"]
mycol = mydb["sites"]


for x in mycol.find({'name': 'Taobao'}, {}):
  print(x)
# out {'_id': ObjectId('62c8379095e527e3e1d1377d')}

for x in mycol.find({'name': 'Taobao'}):
  print(x)
# out {'_id': ObjectId('62c8379095e527e3e1d1377d'), 'name': 'Taobao', 'alexa': '100', 'url': 'https://www.taobao.com'}

for x in mycol.find({'_id': '62c8379095e527e3e1d1377d'}):
  print(x)
# out nothing

for x in mycol.find({"_id": "ObjectId('62c8379095e527e3e1d1377d')"}):
  print(x)
# out nothing

# 根据id 查询
for x in mycol.find({"_id": ObjectId('62c8379095e527e3e1d1377d')}):
  print(x)
# out {'_id': ObjectId('62c8379095e527e3e1d1377d'), 'name': 'Taobao', 'alexa': '100', 'url': 'https://www.taobao.com'}

View Code

# -*- coding: utf-8 -*-

# !/usr/bin/python3

import pymongo
from bson.objectid import ObjectId

myclient = pymongo.MongoClient("mongodb://hc2108:27017/")
mydb = myclient["runoobdb"]
mycol = mydb["sites"]

for x in mycol.find({'name': 'Taobao'}):
  print(x)

# out {'_id': ObjectId('62c8379095e527e3e1d1377d'), 'name': 'Taobao', 'alexa': '100', 'url': 'https://www.taobao.com'}

for x in mycol.find({'name': 'Taobao'},{}):
  print(x)

# out {'_id': ObjectId('62c8379095e527e3e1d1377d')}

for x in mycol.find({}, {'name': 'Taobao'}):
  print(x)

""" 
{'_id': ObjectId('62c8358886f5bf26c4026d21'), 'name': 'Taobao'}
{'_id': ObjectId('62c835af5570d01ed39776aa'), 'name': 'Taobao'}
{'_id': ObjectId('62c835b8a3bc3fdaee7dd5ac'), 'name': 'Taobao'}
{'_id': ObjectId('62c8379095e527e3e1d1377d'), 'name': 'Taobao'}
{'_id': ObjectId('62c8379095e527e3e1d1377e'), 'name': 'Taobao'}
{'_id': ObjectId('62c8379095e527e3e1d1377f'), 'name': 'Taobao'}
{'_id': ObjectId('62c8379095e527e3e1d13780'), 'name': 'Taobao'}
{'_id': ObjectId('62c8379095e527e3e1d13781'), 'name': 'Taobao'}
"""

View Code

update

# -*- coding: utf-8 -*-

# !/usr/bin/python3


import pymongo

myclient = pymongo.MongoClient("mongodb://hc2108:27017/")
mydb = myclient["runoobdb"]
mycol = mydb["sites"]

myquery = {"alexa": "10000"}
newvalues = {"$set": {"alexa": "12345"}}

# 修改 ， 如果查找到的匹配数据多于一条，则只会修改第一条
# mycol.update_one(myquery, newvalues)
#
# # 输出修改后的  "sites"  集合
# for x in mycol.find():
#     print(x)


# 多条修改。 修改name R 开头的记录
myquery = {"name": {"$regex": "^R"}}
newvalues = {"$set": {"alexa": "123"}}

x = mycol.update_many(myquery, newvalues)

print(x.modified_count, "文档已修改")

for x in mycol.find():
    print(x)

View Code

delete

# -*- coding: utf-8 -*-
#!/usr/bin/python3

import pymongo

myclient = pymongo.MongoClient("mongodb://hc2108:27017/")
mydb = myclient["runoobdb"]
mycol = mydb["sites"]

myquery = {"name": "RUNOOB"}

# 只删除一个
# mycol.delete_one(myquery)


# 删除多个
myquery = {"name": {"$regex": "^R"}}

x = mycol.delete_many(myquery)

# 删除集合所有文档
# x = mycol.delete_many({})

print(x.deleted_count, "个文档已删除")

# 删除后输出
for x in mycol.find():
    print(x)

View Code

object id

# -*- coding: utf-8 -*-
# !/usr/bin/python3
"""
id操作

"""


import pymongo
from bson.objectid import ObjectId

c = ObjectId('62c8379095e527e3e1d1377d')

print(c)  # 62c8379095e527e3e1d1377d
print(type(c))  # <class 'bson.objectid.ObjectId'>

print( c.generation_time )  # 2022-07-08 13:56:32+00:00
print( type(c.generation_time) ) # <class 'datetime.datetime'>


s = str(c)
print(s) # 62c8379095e527e3e1d1377d

View Code

参考

MongoDB教程 RUNOOB.COM 已经全部看完, 重要文档

计算机科学与技术/学习笔记 //0220629_大数据_mongodb学习.txt

MongoDB 集合与文档操作

posted @ 2022-06-27 22:40 sunzebo 阅读(46) 评论(0) 编辑收藏举报

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b0116 数据库Mongodb 使用

说明

安装

使用

命令行客户端

python

参考

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