ATM+购物车项目
ATM + 购物车
https://www.cnblogs.com/kermitjam/articles/10687180.html
readme 内容
前戏: 一个项目是如何从无到有的.
一 需求分析
对项目需求进行分析,并提取出相应的功能.
- 额度15000或自定义 ---> 注册功能
- 实现购物商城，买东西加入购物车，调用信用卡接口结账 ---> 购物车, 支付功能
- 可以提现，手续费5% ---> 提现
- 支持多账户登录 ---> 登陆
- 支持账户间转账 ---> 转账
- 记录每月日常消费流水 ---> 记录流水
- 提供还款接口 ---> 还款
- ATM记录操作日志 ---> 日志功能
- 提供管理接口，包括添加账户、用户额度，冻结账户等... ---> 管理员功能
- 用户认证功能 ---> 登陆认证,使用装饰器
二 程序的架构设计
用户功能层:
负责接收用户输入的内容,并返回结果给用户.
做一些小的逻辑判断.
接口层:
处理业务逻辑.
数据处理层:
对文件进行处理.
增,删,查,改操作.
三层架构的好处:
1.代码结构清晰
2.可扩展性强.
3.易维护,管理.
三 分任务开发
- CTO
- 技术总监
- 架构师
- 项目经理
- 普通开发
UI: 用户界面设计师
前端: 网页的开发
后端: 写业务逻辑,写接口
测试: 测试软件
运维: 部署项目.
四 测试
- 手动测试
传统人工去手动测试.
- 自动化测试
通过脚本模拟人的行为,自动化执行测试.
- 黑盒测试:
对用户界面进行测试.
- 白盒测试:
对软件的性能进行测试,例如每分钟能接收多少并发量.
五 上线运行
把测试好的代码交给运维人员, 部署上线.
conf/settings
import os BASE_PATH = os.path.dirname(os.path.dirname(__file__)) DB_PATH = os.path.join(BASE_PATH,'db') # 定义三种日志输出格式 开始 standard_format = '[%(asctime)s][%(threadName)s:%(thread)d][task_id:%(name)s][%(filename)s:%(lineno)d]' \ '[%(levelname)s][%(message)s]' #其中name为getlogger指定的名字 simple_format = '[%(levelname)s][%(asctime)s][%(filename)s:%(lineno)d]%(message)s' id_simple_format = '[%(levelname)s][%(asctime)s] %(message)s' # 定义日志输出格式 结束 # ****************注意1: log文件的目录 BASE_PATH = os.path.dirname(os.path.dirname(__file__)) logfile_dir = os.path.join(BASE_PATH, 'log') # print(logfile_dir) # ****************注意2: log文件名 logfile_name = 'atm_shop_log.log' # 如果不存在定义的日志目录就创建一个 if not os.path.isdir(logfile_dir): os.mkdir(logfile_dir) # log文件的全路径 logfile_path = os.path.join(logfile_dir, logfile_name) # ****************注意3: log配置字典 LOGGING_DIC = { 'version': 1, 'disable_existing_loggers': False, 'formatters': { 'standard': { 'format': standard_format }, 'simple': { 'format': simple_format }, }, 'filters': {}, 'handlers': { #打印到终端的日志 'console': { 'level': 'DEBUG', 'class': 'logging.StreamHandler', # 打印到屏幕 'formatter': 'simple' }, # 打印到文件的日志,收集info及以上的日志 'default': { 'level': 'DEBUG', 'class': 'logging.handlers.RotatingFileHandler', # 保存到文件 'formatter': 'standard', 'filename': logfile_path, # 日志文件 'maxBytes': 1024*1024*5, # 日志大小 5M 'backupCount': 5, 'encoding': 'utf-8', # 日志文件的编码，再也不用担心中文log乱码了 }, }, 'loggers': { #logging.getLogger(__name__)拿到的logger配置 '': { 'handlers': ['default', 'console'], # 这里把上面定义的两个handler都加上，即log数据既写入文件又打印到屏幕 'level': 'DEBUG', 'propagate': True, # 向上（更高level的logger）传递 }, }, }
core/src
from interface import user_interface from lib import common from interface import bank_interface from interface import shop_interface from interface import admin_interface user_online={'user':None} def register(): print('注册功能') while True: inp_username=input('请输入用户名:').strip() flag=user_interface.check_user_interface(inp_username) if flag: print('用户已存在,请重新输入') continue inp_pwd=input('请输入密码:').strip() re_pwd=input('请再次输入密码:').strip() if inp_pwd==re_pwd: msg=user_interface.register_interface(inp_username,inp_pwd) if msg: print(msg) break else: print('注册失败') else: print('两次密码不一致！') def login(): while True: inp_username = input('请输入用户名').strip() flag=user_interface.check_user_interface(inp_username) if not flag: print('用户不存在') continue inp_pwd = input('请输入密码').strip() flag,msg = user_interface.login_interface(inp_username,inp_pwd) if flag: print(msg) user_online['user']=inp_username break else: print(msg) #查看余额 @common.login_auth def check_bal(): print('查看余额') bal = user_interface.check_bal_interface(user_online['user']) print('余额为: ',bal) #提现 @common.login_auth def withdraw(): while True: money = input('请输入提现金额(按q退出):').strip() if money == 'q': break if not money.isdigit(): print('请输入数字!') continue money = int(money) flag,msg = bank_interface.withdraw_interface(user_online['user'],money) if flag: print(msg) break else: print(msg) @common.login_auth def repay(): while True: money = input('请输入还款金额(按q退出):').strip() if money == 'q': break if not money.isdigit(): print('请输入数字!') continue money = int(money) flag, msg = bank_interface.repay_interface(user_online['user'], money) if flag: print(msg) break # 转账 @common.login_auth def transfer(): while True: to_user = input('请输入转账目标用户(输入q退出):').strip() if to_user == 'q': break if to_user == user_online['user']: print('自己不可以给自己转账!') continue flag = user_interface.check_user_interface(to_user) if not flag: print('用户不存在!') continue money = input('请输入转账金额:').strip() if not money.isdigit(): print('请输入数字!') continue money = int(money) flag,msg=bank_interface.transfer_interface(to_user,user_online['user'],money) if flag: print(msg) break else: print(msg) # 查看流水 @common.login_auth def check_flow(): flow_list = bank_interface.check_flow_interface(user_online['user']) for flow in flow_list: print(flow) # 购物 @common.login_auth def shopping(): good_list = [ ['Tesla',500], ['宝马',350], ['奔驰',400], ['奥迪',300], ['mazda',200] ] user_bal=user_interface.check_bal_interface(user_online['user']) shop_cart = shop_interface.check_shop_cart_interface(user_online['user']) cost = 0 for i in range(len(good_list)): if shop_cart.get(good_list[i][0]): # 若存在,计算购物车价格 cost += shop_cart[good_list[i][0]] * good_list[i][1] while True: for index,price in enumerate(good_list): print(index,price) choice = input('请输入商品编号(输入q退出):').strip() if choice == 'q': print(f'购物车为{shop_cart},余额为{user_bal},总费用为{cost}') cmd = input('是否结账,请输入y/n:').strip() if cmd =='y': flag,msg = shop_interface.buy_interface(user_online['user'],cost) if flag: print(msg) print(f'已购买{shop_cart},余额为{user_bal-cost},总费用为{cost}') break else: print(msg) elif cmd =='n': flag,msg=shop_interface.add_shop_cart_interface(user_online['user'],shop_cart) if flag: print(msg) break elif not choice.isdigit(): print('输入必须为数字!') continue elif choice in [f'{i}' for i in range(len(good_list))]: good_name,good_price = good_list[int(choice)] if user_bal > cost + good_price: if good_name in shop_cart: shop_cart[good_name] += 1 else: shop_cart[good_name] = 1 cost += good_price else: print('金额不足') print(f'购物车为{shop_cart},余额为{user_bal},总费用为{cost}') else: print('输入不在范围内') continue # 参看购物车 @common.login_auth def check_shop_cart(): shop_cart = shop_interface.check_shop_cart_interface(user_online['user']) if not shop_cart: print('购物车是空的,请选择购物车功能') print(shop_cart) while shop_cart != {}: # 若购物车不为空 cmd = input('是否清空购物车,输入y/n') if cmd == 'y': flag,msg=shop_interface.clear_shop_cart_interface(user_online['user']) if flag: print(msg) break elif cmd == 'n': break else: print('输入格式不正确') # 注销 @common.login_auth def logout(): flag,msg = user_interface.logout_interface() if flag: print(msg) #冻结账户 def lock_user(): print('冻结用户') user= input('请输入要冻结的用户：').strip() flag=user_interface.check_user_interface(user) if flag: msg = admin_interface.lock_interface(user) print(msg) else: print('目标用户不存在') #解冻用户 def unlock_user(): print('解冻用户') user = input('请输入要解结的用户：').strip() flag = user_interface.check_user_interface(user) if flag: msg = admin_interface.unlock_interface(user) print(msg) else: print('目标用户不存在') #修改用户额度 def change_limit(): print('修改用户额度') user = input('请输入需要修改额度的用户：').strip() flag = user_interface.check_user_interface(user) if not flag: print('用户不存在') return limit = input('请输入要修改的额度').strip() if limit.isdigit(): limit = int(limit) msg=admin_interface.change_limit_interface(user,limit) print(msg) else: print('请输入数字') admin_func_dic={ '1':lock_user, '2':unlock_user, '3':change_limit } @common.login_auth def admin_sys(): while True: print(''' 1.冻结用户 2.解冻用户 3.用户额度 ''') choice = input('请输入管理员功能(按q退出):').strip() if choice == 'q': break elif choice not in admin_func_dic: print('请重新输入') continue else: admin_func_dic[choice]() func_dic = { '1':register, '2':login, '3':check_bal, '4':withdraw, '5':repay, '6':transfer, '7':check_flow, '8':shopping, '9':check_shop_cart, '10':logout, '11':admin_sys } def run(): while True: print(''' 1.注册 2.登陆 3.查看余额 4.提现 5.还款 6.转账 7.查看流水 8.购物车功能 9.查看购物车(可清空) 10.注销 11.管理员功能 ''') choice = input('请输入功能编号(按q退出):').strip() if choice =='q': break elif choice in func_dic: func_dic[choice]() else: print('请输入正确编号')
db/db_handler
import json import os from conf import settings def save(user_dic): user_path = f'{settings.DB_PATH}/{user_dic["user"]}.json' with open(user_path,'w',encoding='utf8')as f: json.dump(user_dic,f,ensure_ascii=False) def select(user): user_path = f'{settings.DB_PATH}/{user}.json' if os.path.exists(user_path): with open(user_path,'r',encoding='utf8')as f: user_dic=json.load(f) return user_dic
自动生成的ldc.json文件内容
[2019-11-22 19:15:15,294][MainThread:19088][task_id:user][user_interface.py:37][INFO][ldc用户登陆成功!] [2019-11-22 19:16:02,424][MainThread:19088][task_id:bank][bank_interface.py:53][INFO][ldc用户给zxc转账120元] [2019-11-22 19:16:12,150][MainThread:19088][task_id:bank][bank_interface.py:34][INFO][[ldc]用户参看流水] [2019-11-22 19:16:19,305][MainThread:19088][task_id:user][user_interface.py:45][INFO][ldc参看余额!] [2019-11-22 19:16:19,307][MainThread:19088][task_id:shop][shop_interface.py:10][INFO][ldc查看了购物车] [2019-11-22 19:17:02,286][MainThread:19088][task_id:bank][bank_interface.py:67][INFO][ldc用户支付400成功] [2019-11-22 19:17:02,290][MainThread:19088][task_id:shop][shop_interface.py:19][INFO][ldc购买成功] [2019-11-22 19:17:20,777][MainThread:19088][task_id:user][user_interface.py:45][INFO][ldc参看余额!] [2019-11-22 19:17:20,778][MainThread:19088][task_id:shop][shop_interface.py:10][INFO][ldc查看了购物车] [2019-11-22 19:19:32,075][MainThread:19088][task_id:bank][bank_interface.py:67][INFO][ldc用户支付0成功] [2019-11-22 19:19:32,079][MainThread:19088][task_id:shop][shop_interface.py:19][INFO][ldc购买成功] [2019-11-22 19:19:57,101][MainThread:19088][task_id:admin][admin_interface.py:24][INFO][修改用户ldc额度成功] [2019-11-22 23:31:16,539][MainThread:2176][task_id:user][user_interface.py:24][INFO][qwe用户注册成功!] [2019-11-22 23:31:26,546][MainThread:2176][task_id:user][user_interface.py:37][INFO][zxc用户登路成功!] [2019-11-22 23:31:39,420][MainThread:2176][task_id:bank][bank_interface.py:53][INFO][zxc用户给qwe转账100元] [2019-11-22 23:31:53,696][MainThread:2176][task_id:bank][bank_interface.py:34][INFO][[zxc]用户参看流水] [2019-11-22 23:32:39,981][MainThread:2176][task_id:user][user_interface.py:45][INFO][zxc参看余额!] [2019-11-22 23:32:39,985][MainThread:2176][task_id:shop][shop_interface.py:10][INFO][zxc查看了购物车] [2019-11-22 23:33:01,157][MainThread:2176][task_id:bank][bank_interface.py:67][INFO][zxc用户支付1500成功] [2019-11-22 23:33:01,160][MainThread:2176][task_id:shop][shop_interface.py:19][INFO][zxc购买成功] [2019-11-22 23:33:16,300][MainThread:2176][task_id:user][user_interface.py:53][INFO][zxc注销!]
interface/admin_interface
from db import db_handler from lib import common user_logger=common.get_logger('admin') def lock_interface(user): user_dic = db_handler.select(user) user_dic['lock'] = True db_handler.save(user_dic) user_logger.info(f'{user}用户冻结成功') return f'{user}用户冻结成功' def unlock_interface(user): user_dic = db_handler.select(user) user_dic['lock'] = False db_handler.save(user_dic) user_logger.info(f'{user}用户解冻成功') return f'{user}用户解冻成功' def change_limit_interface(user,limit): user_dic = db_handler.select(user) user_dic['balance']=limit db_handler.save(user_dic) user_logger.info(f'修改用户{user}额度成功') return f'修改用户{user}额度成功'
interface/bank_interface
from db import db_handler from lib import common user_loggor = common.get_logger('bank') # 提现接口 def withdraw_interface(user,money): user_dic = db_handler.select(user) if user_dic['balance'] >= money*1.05: user_dic['balance'] -= money*1.05 msg = f'[{user}]用户提现[{money}元,手续费[{money * 0.05}]元]' user_dic['flow'].append(msg) db_handler.save(user_dic) user_loggor.info(f'[{user}]用户提现[{money}元,手续费[{money * 0.05}]元]') return True,msg else: user_loggor.info(f'[{user}]用户提现余额不足') return False,'余额不足' # 还款接口 def repay_interface(user, money): user_dic = db_handler.select(user) user_dic['balance'] += money msg = f'[{user}]用户还款[{money}元]' user_dic['flow'].append(msg) db_handler.save(user_dic) user_loggor.info(f'[{user}]用户还款[{money}元]') return True,msg # 参看流水接口 def check_flow_interface(user): user_dic=db_handler.select(user) user_loggor.info(f'[{user}]用户参看流水') return user_dic['flow'] def transfer_interface(to_user,from_user,money): to_user_dic = db_handler.select(to_user) from_user_dic = db_handler.select(from_user) if from_user_dic['balance'] >= money: from_user_dic['balance'] -= money to_user_dic['balance'] += money # 流水信息 from_user_flow = f'{from_user}用户给{to_user}转账{money}元' to_user_flow = f'{to_user}用户收到{from_user}转账{money}元' # 记录流水 from_user_dic['flow'].append(from_user_flow) to_user_dic['flow'].append(to_user_flow) db_handler.save(from_user_dic) db_handler.save(to_user_dic) user_loggor.info(f'{from_user}用户给{to_user}转账{money}元') return True,from_user_flow else: user_loggor.info(f'{from_user}用户余额不足') return False,'余额不足' # 银行支付接口 def pay_interface(user,cost): user_dic=db_handler.select(user) if user_dic['balance'] >= cost: user_dic['balance'] -= cost user_dic['flow'].append(f'{user}用户支付{cost}成功') db_handler.save(user_dic) user_loggor.info(f'{user}用户支付{cost}成功') return True else: user_loggor.info(f'{user}用户支付{cost}失败') return False
interface/shop_interface
from db import db_handler from interface import bank_interface from lib import common user_logger=common.get_logger('shop') # 查看购物车 def check_shop_cart_interface(user): user_dic = db_handler.select(user) user_logger.info(f'{user}查看了购物车') return user_dic['shop_cart'] def buy_interface(user,cost): flag=bank_interface.pay_interface(user,cost) if flag: user_dic = db_handler.select(user) user_dic['shop_cart'] = {} # 清空购物车 db_handler.save(user_dic) user_logger.info(f'{user}购买成功') return True,'购物成功' else: user_logger.info(f'{user}余额不足，购物失败') return False,'余额不足，购物失败' def add_shop_cart_interface(user,shop_cart): user_dic = db_handler.select(user) user_dic['shop_cart'] = shop_cart db_handler.save(user_dic) user_logger.info(f'{user}添加购物车成功') return True,'添加购物车成功' def clear_shop_cart_interface(user): user_dic = db_handler.select(user) user_dic['shop_cart'] = {} db_handler.save(user_dic) user_logger.info(f'{user}购物车清空成功') return True,'购物车清空成功'
interface/user_interface
from db import db_handler from lib import common user_logger=common.get_logger('user') # 参看用户接口 def check_user_interface(user): user_dic=db_handler.select(user) if user_dic: return True # 注册接口 def register_interface(user,pwd,balance = 15000): pwd = common.get_md5(pwd) user_dic={ 'user':user, 'pwd':pwd, 'balance':balance, 'flow':[], 'shop_cart':{}, 'lock':False } db_handler.save(user_dic) user_logger.info(f'{user_dic["user"]}用户注册成功!') return f'{user}用户注册成功！' def login_interface(user,pwd): user_dic = db_handler.select(user) pwd = common.get_md5(pwd) if user_dic['lock']: user_logger.info(f'{user}用户已被锁定，请联系管理员') return False,'用户已被锁定，请联系管理员' if user_dic['pwd'] == pwd: user_logger.info(f'{user}用户登路成功!') return True,f'{user}用户登路成功!' user_logger.info(f'{user}输入密码错误!') return False,f'{user}密码错误!' def check_bal_interface(user): user_dic=db_handler.select(user) user_logger.info(f'{user}参看余额!') return user_dic["balance"] # 注销 def logout_interface(): from core import src user = src.user_online['user'] src.user_online['user']=None user_logger.info(f'{user}注销!') return True,f'{user}用户注销成功'
lib/common
import hashlib import logging.config from conf import settings def get_md5(pwd): md5_obj=hashlib.md5() md5_obj.update(pwd.encode('utf8')) sal='LDC专用' md5_obj.update(sal.encode('utf8')) res = md5_obj.hexdigest() return res # 登陆认证功能 def login_auth(func): from core import src def inner(*args,**kwargs): if src.user_online['user']: res = func(*args,**kwargs) return res else: print('请先登录') src.login() return inner def get_logger(type_name): logging.config.dictConfig(settings.LOGGING_DIC) logger = logging.getLogger(type_name) return logger
log文件夹内自动生成的文件
[2019-11-22 19:15:15,294][MainThread:19088][task_id:user][user_interface.py:37][INFO][ldc用户登陆成功!] [2019-11-22 19:16:02,424][MainThread:19088][task_id:bank][bank_interface.py:53][INFO][ldc用户给zxc转账120元] [2019-11-22 19:16:12,150][MainThread:19088][task_id:bank][bank_interface.py:34][INFO][[ldc]用户参看流水] [2019-11-22 19:16:19,305][MainThread:19088][task_id:user][user_interface.py:45][INFO][ldc参看余额!] [2019-11-22 19:16:19,307][MainThread:19088][task_id:shop][shop_interface.py:10][INFO][ldc查看了购物车] [2019-11-22 19:17:02,286][MainThread:19088][task_id:bank][bank_interface.py:67][INFO][ldc用户支付400成功] [2019-11-22 19:17:02,290][MainThread:19088][task_id:shop][shop_interface.py:19][INFO][ldc购买成功] [2019-11-22 19:17:20,777][MainThread:19088][task_id:user][user_interface.py:45][INFO][ldc参看余额!] [2019-11-22 19:17:20,778][MainThread:19088][task_id:shop][shop_interface.py:10][INFO][ldc查看了购物车] [2019-11-22 19:19:32,075][MainThread:19088][task_id:bank][bank_interface.py:67][INFO][ldc用户支付0成功] [2019-11-22 19:19:32,079][MainThread:19088][task_id:shop][shop_interface.py:19][INFO][ldc购买成功] [2019-11-22 19:19:57,101][MainThread:19088][task_id:admin][admin_interface.py:24][INFO][修改用户ldc额度成功] [2019-11-22 23:31:16,539][MainThread:2176][task_id:user][user_interface.py:24][INFO][qwe用户注册成功!] [2019-11-22 23:31:26,546][MainThread:2176][task_id:user][user_interface.py:37][INFO][zxc用户登路成功!] [2019-11-22 23:31:39,420][MainThread:2176][task_id:bank][bank_interface.py:53][INFO][zxc用户给qwe转账100元] [2019-11-22 23:31:53,696][MainThread:2176][task_id:bank][bank_interface.py:34][INFO][[zxc]用户参看流水] [2019-11-22 23:32:39,981][MainThread:2176][task_id:user][user_interface.py:45][INFO][zxc参看余额!] [2019-11-22 23:32:39,985][MainThread:2176][task_id:shop][shop_interface.py:10][INFO][zxc查看了购物车] [2019-11-22 23:33:01,157][MainThread:2176][task_id:bank][bank_interface.py:67][INFO][zxc用户支付1500成功] [2019-11-22 23:33:01,160][MainThread:2176][task_id:shop][shop_interface.py:19][INFO][zxc购买成功] [2019-11-22 23:33:16,300][MainThread:2176][task_id:user][user_interface.py:53][INFO][zxc注销!]
start.py 启动文件
注意：此处添加环境变量可以省略因为start在项目路径下。当start.py在bin目录下，必须加如环境变量，否则无法引用项目其他文件夹中的模块
import os import sys from core import src BASE_PATH = os.path.dirname(__file__) sys.path.append(BASE_PATH) if __name__ == '__main__': src.run()
