python mysql项目实战及框架搭建过程(新闻审批)

python+mysql.connector，demo实战

框架搭建

说实话，其实没有使用到框架，只是用了， python+mysql.connector模块
首先在开始虚拟环境：

(vega-j-vI5SDr) (vega) D:\test\python-mysql\python-mysql\vega>pip install mysql.connector
Processing c:\users\administrator\appdata\local\pip\cache\wheels\7b\14\39\5aad423666e827dfe9a1fbcd111ac17171e7c9865d570780ce\mysql_connector-2.2.9-cp39-cp39-win_amd64.whl
Installing collected packages: mysql.connector
Successfully installed mysql.connector

源代码地址

代码实现创建mysql连接池

#!/usr/bin/env python
# _*_ coding: utf-8 _*_
# @Time : 2021/6/6 13:16
# @Author : zhaocunwei
# @Version：V 0.1
# @File : mysql_db.py
# @desc :
import mysql.connector.pooling
__config = {
 "host": "localhost",
 "port": 3306,
 "user": "root",
 "password": "root",
 "database": "vega"
}
try:
 pool = mysql.connector.pooling.MySQLConnectionPool(
  **__config,
  pool_size=10
 )
except Exception as e:
 print(e)

SQL脚本：

/*
Navicat MariaDB Data Transfer
Source Server: localhost_3306
Source Server Version : 100120
Source Host  : localhost:3306
Source Database : vega
Target Server Type : MariaDB
Target Server Version : 100120
File Encoding: 65001
Date: 2018-11-27 19:35:26
*/
SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for t_news
-- ----------------------------
DROP TABLE IF EXISTS `t_news`;
CREATE TABLE `t_news` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `title` varchar(40) NOT NULL,
  `editor_id` int(10) unsigned NOT NULL,
  `type_id` int(10) unsigned NOT NULL,
  `content_id` char(12) NOT NULL,
  `is_top` tinyint(3) unsigned NOT NULL,
  `create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `update_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `state` enum('草稿','待审批','已审批','隐藏') NOT NULL,
  PRIMARY KEY (`id`),
  KEY `editor_id` (`editor_id`),
  KEY `type_id` (`type_id`),
  KEY `state` (`state`),
  KEY `create_time` (`create_time`),
  KEY `is_top` (`is_top`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of t_news
-- ----------------------------
INSERT INTO `t_news` VALUES ('1', '新闻标题1', '2', '1', '1', '1', '2018-11-22 18:55:56', '2018-11-22 18:55:56', '待审批');
-- ----------------------------
-- Table structure for t_role
-- ----------------------------
DROP TABLE IF EXISTS `t_role`;
CREATE TABLE `t_role` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `role` varchar(20) NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `role` (`role`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of t_role
-- ----------------------------
INSERT INTO `t_role` VALUES ('2', '新闻编辑');
INSERT INTO `t_role` VALUES ('1', '管理员');
-- ----------------------------
-- Table structure for t_type
-- ----------------------------
DROP TABLE IF EXISTS `t_type`;
CREATE TABLE `t_type` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `type` varchar(20) NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `type` (`type`)
) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of t_type
-- ----------------------------
INSERT INTO `t_type` VALUES ('2', '体育');
INSERT INTO `t_type` VALUES ('5', '历史');
INSERT INTO `t_type` VALUES ('4', '娱乐');
INSERT INTO `t_type` VALUES ('3', '科技');
INSERT INTO `t_type` VALUES ('1', '要闻');
-- ----------------------------
-- Table structure for t_user
-- ----------------------------
DROP TABLE IF EXISTS `t_user`;
CREATE TABLE `t_user` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `username` varchar(20) NOT NULL,
  `password` varchar(500) NOT NULL,
  `email` varchar(100) NOT NULL,
  `role_id` int(10) unsigned NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `username` (`username`),
  KEY `username_2` (`username`)
) ENGINE=InnoDB AUTO_INCREMENT=14 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of t_user
-- ----------------------------
INSERT INTO `t_user` VALUES ('1', 'admin', '3E6BC27A781F0AC08BCFD78CC3DCE4CA', 'admin@163.com', '1');
INSERT INTO `t_user` VALUES ('2', 'scott', '3E6BC27A781F0AC08BCFD78CC3DCE4CA', 'scott@163.com', '1');
INSERT INTO `t_user` VALUES ('3', 'test_1', '3E6BC27A781F0AC08BCFD78CC3DCE4CA', 'test_1@163.com', '2');
INSERT INTO `t_user` VALUES ('4', 'test_2', '3E6BC27A781F0AC08BCFD78CC3DCE4CA', 'test_2@163.com', '2');
INSERT INTO `t_user` VALUES ('5', 'test_3', '3E6BC27A781F0AC08BCFD78CC3DCE4CA', 'test_3@163.com', '2');
INSERT INTO `t_user` VALUES ('6', 'test_4', '3E6BC27A781F0AC08BCFD78CC3DCE4CA', 'test_4@163.com', '2');
INSERT INTO `t_user` VALUES ('7', 'test_5', '3E6BC27A781F0AC08BCFD78CC3DCE4CA', 'test_5@163.com', '2');
INSERT INTO `t_user` VALUES ('8', 'test_6', '3E6BC27A781F0AC08BCFD78CC3DCE4CA', 'test_6@163.com', '2');
INSERT INTO `t_user` VALUES ('9', 'test_7', '3E6BC27A781F0AC08BCFD78CC3DCE4CA', 'test_7@163.com', '2');
INSERT INTO `t_user` VALUES ('10', 'test_8', '3E6BC27A781F0AC08BCFD78CC3DCE4CA', 'test_8@163.com', '2');
INSERT INTO `t_user` VALUES ('11', 'test_9', '3E6BC27A781F0AC08BCFD78CC3DCE4CA', 'test_9@163.com', '2');
INSERT INTO `t_user` VALUES ('12', 'test_10', '3E6BC27A781F0AC08BCFD78CC3DCE4CA', 'test_10@163.com', '2');
INSERT INTO `t_user` VALUES ('13', 'test_11', '3E6BC27A781F0AC08BCFD78CC3DCE4CA', 'test_11@163.com', '2');

创建DAO程序

#!/usr/bin/env python
# _*_ coding: utf-8 _*_
# @Time : 2021/6/6 13:24
# @Author : zhaocunwei
# @Version：V 0.1
# @File : user_dao.py
# @desc : 用户
from db.mysql_db import pool

class UserDao:
 # 验证用户登录
 def login(self, username, password):
  try:
con = pool.get_connection()
cursor = con.cursor()
sql = "SELECT COUNT(*) FROM t_user WHERE username=%s AND " \
"AES_DECRYPT(UNHEX(password),'HelloWorld')=%s"
cursor.execute(sql, (username, password))
count = cursor.fetchone()[0]
return True if count == 1 else False
  except Exception as e:
print(e)
  finally:
if "con" in dir():
 con.close()
 # 查询用户角色
 def search_user_role(self, username):
  try:
con = pool.get_connection()
cursor = con.cursor()
sql = "SELECT r.role FROM t_user u JOIN t_role r ON u.role_id=r.id" \
"WHERE u.username=%s"
cursor.execute(sql, (username))
role = cursor.fetchone()[0]
return role
  except Exception as e:
print(e)
  finally:
if "con" in dir():
 con.close()

创建service层程序

#!/usr/bin/env python
# _*_ coding: utf-8 _*_
# @Time : 2021/6/6 13:57
# @Author : zhaocunwei
# @Version：V 0.1
# @File : user_service.py
# @desc :
from db.user_dao import UserDao

class UserService:
 # 创建私有对象
 __user_dao = UserDao()
 # 创建登录函数
 def login(self, username, password):
  result = self.__user_dao.login(username, password)
  return result
 # 查询用户角色
 def search_user_role(self, username):
  role = self.__user_dao.search_user_role(username)
  return role

安装变色的模块，O(∩_∩)O哈哈~

(vega-j-vI5SDr) (vega) D:\test\python-mysql\python-mysql\vega>pip install colorama
Collecting colorama
  Using cached colorama-0.4.4-py2.py3-none-any.whl (16 kB)
Installing collected packages: colorama
Successfully installed colorama-0.4.4

CMD模拟登陆

#!/usr/bin/env python
# _*_ coding: utf-8 _*_
# @Time : 2021/6/6 14:08
# @Author : zhaocunwei
# @Version：V 0.1
# @File : app.py
# @desc : 控制台程序
from colorama import Fore, Style
from getpass import getpass
from service.user_service import UserService
import os
import sys
__user_service = UserService()
while True:
 os.system("cls")
 print(Fore.LIGHTBLUE_EX, "\n\t=========================")
 print(Fore.LIGHTBLUE_EX, "\n\t欢迎使用新闻管理系统")
 print(Fore.LIGHTBLUE_EX, "\n\t=========================")
 print(Fore.LIGHTGREEN_EX, "\n\t1.登录系统")
 print(Fore.LIGHTGREEN_EX, "\n\t2.退出系统")
 print(Style.RESET_ALL)
 opt = input("\n\t输入操作编号：")
 if opt == "1":
  username = input("\n\t用户名:")
  password = getpass("\n\t密码：")
  result = __user_service.login(username, password)
  # 登录成功
  if result == True:
# 查询角色
role = __user_service.search_user_role(username)
os.system("cls")
while True:
 if role == "新闻编辑":
  print("test")
 elif role == "管理员":
  print(Fore.LIGHTGREEN_EX, "\n\t1.新闻管理")
  print(Fore.LIGHTGREEN_EX, "\n\t2.用户管理")
  print(Fore.LIGHTRED_EX, "\n\tabck.退出登录")
  print(Fore.LIGHTRED_Ex, "\n\texit.退出系统")
  print(Style.RESET_ALL)
  opt = input("\n\t输入操作编号:")
  else:
print("\n\t登录失败")
 elif opt == "2":
  sys.exit(0)

from db.mysql_db import pool
class NewsDao:
 #查询待审批新闻列表
 def search_unreview_list(self,page):
  try:
con=pool.get_connection()
cursor=con.cursor()
sql="SELECT n.id,n.title,t.type,u.username " \
 "FROM t_news n JOIN t_type t ON n.type_id=t.id " \
 "JOIN t_user u ON n.editor_id=u.id " \
 "WHERE n.state=%s " \
 "ORDER BY n.create_time DESC " \
 "LIMIT %s,%s"
cursor.execute(sql,("待审批",(page-1)*10,10))
result=cursor.fetchall()
return result
  except Exception as e:
print(e)
  finally:
if "con" in dir():
 con.close()
 # 查询待审批新闻的总页数
 def search_unreview_count_page(self):
  try:
con=pool.get_connection()
cursor=con.cursor()
sql="SELECT CEIL(COUNT(*)/10) FROM t_news WHERE state=%s"
cursor.execute(sql,["待审批"])
count_page=cursor.fetchone()[0]
return count_page
  except Exception as e:
print(e)
  finally:
if "con" in dir():
 con.close()
 #审批新闻
 def update_unreview_news(self,id):
  try:
con = pool.get_connection()
con.start_transaction()
cursor=con.cursor()
sql="UPDATE t_news SET state=%s WHERE id=%s"
cursor.execute(sql,("已审批",id))
con.commit()
  except Exception as e:
if "con" in dir():
 con.rollback()
print(e)
  finally:
if "con" in dir():
 con.close() #查询新闻列表
 def search_list(self,page):
  try:
con=pool.get_connection()
cursor=con.cursor()
sql="SELECT n.id,n.title,t.type,u.username " \
 "FROM t_news n JOIN t_type t ON n.type_id=t.id " \
 "JOIN t_user u ON n.editor_id=u.id " \
 "ORDER BY n.create_time DESC " \
 "LIMIT %s,%s"
cursor.execute(sql,((page-1)*10,10))
result=cursor.fetchall()
return result
  except Exception as e:
print(e)
  finally:
if "con" in dir():
 con.close()
 #查询新闻总页数
 def search_count_page(self):
  try:
con=pool.get_connection()
cursor=con.cursor()
sql="SELECT CEIL(COUNT(*)/10) FROM t_news"
cursor.execute(sql)
count_page=cursor.fetchone()[0]
return count_page
  except Exception as e:
print(e)
  finally:
if "con" in dir():
 con.close()
 #删除新闻
 def delete_by_id(self,id):
  try:
con = pool.get_connection()
con.start_transaction()
cursor=con.cursor()
sql="DELETE FROM t_news WHERE id=%s"
cursor.execute(sql,[id])
con.commit()
  except Exception as e:
if "con" in dir():
 con.rollback()
print(e)
  finally:
if "con" in dir():
 con.close()

from db.news_dao import NewsDao
class NewsService:
 __news_dao=NewsDao()
 # 查询待审批新闻列表
 def search_unreview_list(self,page):
  result=self.__news_dao.search_unreview_list(page)
  return result
 # 查询待审批新闻的总页数
 def search_unreview_count_page(self):
  count_page=self.__news_dao.search_unreview_count_page()
  return count_page
 # 审批新闻
 def update_unreview_news(self, id):
  self.__news_dao.update_unreview_news(id)
 #查询新闻列表
 def search_list(self, page):
  result=self.__news_dao.search_list(page)
  return result
 # 查询新闻总页数
 def search_count_page(self):
  count_page=self.__news_dao.search_count_page()
  return count_page
 # 删除新闻
 def delete_by_id(self, id):
  self.__news_dao.delete_by_id(id)

from colorama import Fore,Style,init
init()
from getpass import getpass
from service.user_service import UserService
from service.news_service import NewsService
from service.role_service import RoleService
import os
import sys
import time

__user_service=UserService()
__news_service=NewsService()
__role_service=RoleService()
while True:
 os.system("cls")
 print(Fore.LIGHTBLUE_EX,"\n\t==================")
 print(Fore.LIGHTBLUE_EX,"\n\t欢迎使用新闻管理系统")
 print(Fore.LIGHTBLUE_EX, "\n\t==================")
 print(Fore.LIGHTGREEN_EX,"\n\t1.登陆系统")
 print(Fore.LIGHTGREEN_EX,"\n\t2.退出系统")
 print(Style.RESET_ALL)
 opt=input("\n\t输入操作编号:")
 if opt=="1":
  username=input("\n\t用户名:")
  password=getpass("\n\t密码:")
  result=__user_service.login(username,password)
  #登陆成功
  if result==True:
#查询角色
role=__user_service.search_user_role(username)
while True:
 os.system("cls")
 if role=="新闻编辑":
  print('test')
 elif role=="管理员":
  print(Fore.LIGHTGREEN_EX,"\n\t1.新闻管理")
  print(Fore.LIGHTGREEN_EX, "\n\t2.用户管理")
  print(Fore.LIGHTRED_EX, "\n\tback.退出登陆")
  print(Fore.LIGHTRED_EX, "\n\texit.退出系统")
  print(Style.RESET_ALL)
  opt = input("\n\t输入操作编号:")
  if opt=="1":while True:
os.system("cls")
print(Fore.LIGHTGREEN_EX, "\n\t1.审批新闻")
print(Fore.LIGHTGREEN_EX, "\n\t2.删除新闻")
print(Fore.LIGHTRED_EX, "\n\tback.返回上一层")
print(Style.RESET_ALL)
opt = input("\n\t输入操作编号:")
if opt=="1":
 page=1
 while True:
  os.system("cls")
  count_page=__news_service.search_unreview_count_page()
  result=__news_service.search_unreview_list(page)
  for index in range(len(result)):
one=result[index]
print(Fore.LIGHTBLUE_EX, "\n\t%d\t%s\t%s\t%s"%(index+1,one[1],one[2],one[3]))
  print(Fore.LIGHTBLUE_EX, "\n\t-------------------")
  print(Fore.LIGHTBLUE_EX,"\n\t%d/%d"%(page,count_page))
  print(Fore.LIGHTBLUE_EX, "\n\t-------------------")
  print(Fore.LIGHTRED_EX, "\n\tback.返回上一层")
  print(Fore.LIGHTRED_EX, "\n\tprev.上一页")
  print(Fore.LIGHTRED_EX, "\n\tnext.下一页")
  print(Style.RESET_ALL)
  opt = input("\n\t输入操作编号:")
  if opt=="back":
break
  elif opt=="prev" and page>1:
page-=1
  elif opt=="next" and page<count_page:
page+=1
  elif int(opt)>=1 and int(opt)<=10:
news_id=result[int(opt)-1][0]
__news_service.update_unreview_news(news_id)
elif opt=="2":
 page=1
 while True:
  os.system("cls")
  count_page=__news_service.search_count_page()
  result=__news_service.search_list(page)
  for index in range(len(result)):
one=result[index]
print(Fore.LIGHTBLUE_EX, "\n\t%d\t%s\t%s\t%s"%(index+1,one[1],one[2],one[3]))
  print(Fore.LIGHTBLUE_EX, "\n\t-------------------")
  print(Fore.LIGHTBLUE_EX,"\n\t%d/%d"%(page,count_page))
  print(Fore.LIGHTBLUE_EX, "\n\t-------------------")
  print(Fore.LIGHTRED_EX, "\n\tback.返回上一层")
  print(Fore.LIGHTRED_EX, "\n\tprev.上一页")
  print(Fore.LIGHTRED_EX, "\n\tnext.下一页")
  print(Style.RESET_ALL)
  opt = input("\n\t输入操作编号:")
  if opt=="back":
break
  elif opt=="prev" and page>1:
page-=1
  elif opt=="next" and page<count_page:
page+=1
  elif int(opt)>=1 and int(opt)<=10:
news_id=result[int(opt)-1][0]
__news_service.delete_by_id(news_id)
elif opt=="back":
 break
  elif opt=="2":while True:
os.system("cls")
print(Fore.LIGHTGREEN_EX, "\n\t1.添加用户")
print(Fore.LIGHTGREEN_EX, "\n\t2.修改用户")
print(Fore.LIGHTGREEN_EX, "\n\t3.删除用户")
print(Fore.LIGHTRED_EX, "\n\tback.返回上一层")
print(Style.RESET_ALL)
opt = input("\n\t输入操作编号:")
if opt=="back":
 break
elif opt=="1":
 os.system("cls")
 username=input("\n\t用户名:")
 password = getpass("\n\t密码:")
 repassword=getpass("\n\t重复密码:")
 if password!=repassword:
  print("\n\t两次密码不一致(3秒自动返回)")
  time.sleep(3)
  continue
 email=input("\n\t邮箱:")
 result=__role_service.search_list()
 for index in range(len(result)):
  one=result[index]
  print(Fore.LIGHTBLUE_EX,"\n\t%d.%s"%(index+1,one[1]))
 print(Style.RESET_ALL)
 opt=input("\n\t角色编号:")
 role_id=result[int(opt)-1][0]
 __user_service.insert(username,password,email,role_id)
 print("\n\t保存成功(3秒自动返回)")
 time.sleep(3)
elif opt=="2":
 page = 1
 while True:
  os.system("cls")
  count_page = __user_service.search_count_page()
  result = __user_service.search_list(page)
  for index in range(len(result)):
one = result[index]
print(Fore.LIGHTBLUE_EX,
"\n\t%d\t%s\t%s" % (index + 1, one[1], one[2]))
  print(Fore.LIGHTBLUE_EX, "\n\t-------------------")
  print(Fore.LIGHTBLUE_EX, "\n\t%d/%d" % (page, count_page))
  print(Fore.LIGHTBLUE_EX, "\n\t-------------------")
  print(Fore.LIGHTRED_EX, "\n\tback.返回上一层")
  print(Fore.LIGHTRED_EX, "\n\tprev.上一页")
  print(Fore.LIGHTRED_EX, "\n\tnext.下一页")
  print(Style.RESET_ALL)
  opt = input("\n\t输入操作编号:")
  if opt == "back":
break
  elif opt == "prev" and page > 1:
page -= 1
  elif opt == "next" and page < count_page:
page += 1
  elif int(opt) >= 1 and int(opt) <= 10:
os.system("cls")
user_id=result[int(opt)-1][0]
username = input("\n\t新用户名:")
password = getpass("\n\t新密码:")
repassword = getpass("\n\t再次输入密码:")
if password!=repassword:
 print(Fore.LIGHTRED_EX,"\n\t两次密码不一致(3秒自动返回)")
 print(Style.RESET_ALL)
 time.sleep(3)
 break
email = input("\n\t新邮箱:")
result = __role_service.search_list()
for index in range(len(result)):
 one = result[index]
 print(Fore.LIGHTBLUE_EX, "\n\t%d.%s" % (index + 1, one[1]))
print(Style.RESET_ALL)
opt = input("\n\t角色编号:")
role_id = result[int(opt) - 1][0]
opt=input("\n\t是否保存(Y/N)")
if opt=="Y" or opt=="y":
 __user_service.update(user_id,username,password,email,role_id)
 print("\n\t保存成功(3秒自动返回)")
 time.sleep(3)
elif opt=="3":
 page = 1
 while True:
  os.system("cls")
  count_page = __user_service.search_count_page()
  result = __user_service.search_list(page)
  for index in range(len(result)):
one = result[index]
print(Fore.LIGHTBLUE_EX,
"\n\t%d\t%s\t%s" % (index + 1, one[1], one[2]))
  print(Fore.LIGHTBLUE_EX, "\n\t-------------------")
  print(Fore.LIGHTBLUE_EX, "\n\t%d/%d" % (page, count_page))
  print(Fore.LIGHTBLUE_EX, "\n\t-------------------")
  print(Fore.LIGHTRED_EX, "\n\tback.返回上一层")
  print(Fore.LIGHTRED_EX, "\n\tprev.上一页")
  print(Fore.LIGHTRED_EX, "\n\tnext.下一页")
  print(Style.RESET_ALL)
  opt = input("\n\t输入操作编号:")
  if opt == "back":
break
  elif opt == "prev" and page > 1:
page -= 1
  elif opt == "next" and page < count_page:
page += 1
  elif int(opt) >= 1 and int(opt) <= 10:
os.system("cls")
user_id=result[int(opt)-1][0]
__user_service.delete_by_id(user_id)
print("\n\t删除成功(3秒自动返回)")
time.sleep(3)
  if opt=='back':break;
  elif opt=='exit':sys.exit(0)
  else:
print("\n\t登录失败(3秒自动返回)")
time.sleep(3)
 elif opt=="2":
  sys.exit(0)

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