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import tkinter as tk
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from tkinter import messagebox, simpledialog
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from datetime import datetime
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import mysql.connector
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conn = mysql.connector.connect(
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host="localhost",
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user="root",
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password="root",
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database="sys"
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)
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class ParkingLotManager:
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def __init__(self):
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self.conn = mysql.connector.connect(
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host="localhost",
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user="root",
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password="root",
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database="sys"
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)
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self.cursor = self.conn.cursor()
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# 初始化时从数据库加载定价规则
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self.load_pricing_rules_from_db()
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self.parked_vehicles = {} # 本地缓存，用于快速查询
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def load_parked_vehicles_from_db(self):
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"""从数据库加载已停车辆"""
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self.cursor.execute("SELECT license_plate, vehicle_type, entry_time FROM parked_vehicles")
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parked_data = self.cursor.fetchall()
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for plate, vehicle_type, entry_time in parked_data:
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self.parked_vehicles[plate] = {
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'vehicle': Vehicle(plate, vehicle_type),
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'entry_time': datetime.strptime(entry_time, "%Y-%m-%d %H:%M:%S")
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}
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# 添加一个新方法用于初始化App时加载数据
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def initialize_data_on_login(self):
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self.load_parked_vehicles_from_db()
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# 在ParkingSystemApp的__init__方法中调用加载数据的方法
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def open_main_system(parking_manager):
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main_system_window = tk.Toplevel(login_window)
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main_system_window.title("停车场管理系统 - 主功能")
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# 在创建ParkingSystemApp实例前，先初始化数据
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parking_manager.initialize_data_on_login()
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app = ParkingSystemApp(main_system_window, parking_manager)
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main_system_window.protocol("WM_DELETE_WINDOW", lambda: [main_system_window.destroy(), login_window.destroy()])
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def __init__(self, master, parking_manager):
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# ...其他初始化代码...
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parking_manager.load_parked_vehicles_from_db()
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self.update_ui_vehicles()
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def park_vehicle(self, vehicle):
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# 除了现有逻辑，还需要在数据库中记录入场时间
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sql = "INSERT INTO parked_vehicles (license_plate, vehicle_type, entry_time) VALUES (%s, %s, %s)"
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val = (vehicle.get_license_plate(), vehicle.get_vehicle_type(), datetime.now())
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self.cursor.execute(sql, val)
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self.conn.commit()
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self.parked_vehicles[vehicle.get_license_plate()] = {'vehicle': vehicle, 'entry_time': datetime.now()}
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def unpark_vehicle(self, license_plate):
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# 除了现有逻辑，更新数据库中的出场时间和费用
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vehicle_info = self.parked_vehicles.get(license_plate)
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if vehicle_info:
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exit_time = datetime.now()
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hours_parked = (exit_time - vehicle_info['entry_time']).total_seconds() / 3600
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vehicle_type = vehicle_info['vehicle'].get_vehicle_type()
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fee = self.pricing_rules[vehicle_type].calculate_fee(hours_parked)
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sql_update = "UPDATE parked_vehicles SET exit_time=%s, total_fee=%s WHERE license_plate=%s"
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val = (exit_time, fee, license_plate)
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self.cursor.execute(sql_update, val)
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self.conn.commit()
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del self.parked_vehicles[license_plate]
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return fee
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else:
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raise ValueError("Vehicle not found in the system.")
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class PricingRule:
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def __init__(self, vehicle_type, hourly_rate, max_daily_rate=None):
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self.vehicle_type = vehicle_type
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self.hourly_rate = hourly_rate
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self.max_daily_rate = max_daily_rate or float('inf')
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def calculate_fee(self, hours_parked):
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fee = hours_parked * self.hourly_rate
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if self.max_daily_rate and fee > self.max_daily_rate:
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return self.max_daily_rate
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return fee
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class Vehicle:
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def __init__(self, license_plate, vehicle_type):
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self.license_plate = license_plate
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self.vehicle_type = vehicle_type
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def get_license_plate(self):
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return self.license_plate
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def get_vehicle_type(self):
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return self.vehicle_type
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class ParkingLotManager:
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def __init__(self):
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self.pricing_rules = {}
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self.parked_vehicles = {}
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def add_pricing_rule(self, vehicle_type, hourly_rate, max_daily_rate=None):
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self.pricing_rules[vehicle_type] = PricingRule(vehicle_type, hourly_rate, max_daily_rate)
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def park_vehicle(self, vehicle):
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self.parked_vehicles[vehicle.get_license_plate()] = {'vehicle': vehicle, 'entry_time': datetime.now()}
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def unpark_vehicle(self, license_plate):
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entry_time = self.parked_vehicles[license_plate]['entry_time']
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parked_hours = (datetime.now() - entry_time).total_seconds() / 3600
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vehicle_type = self.parked_vehicles[license_plate]['vehicle'].get_vehicle_type()
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if vehicle_type in self.pricing_rules:
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fee = self.pricing_rules[vehicle_type].calculate_fee(parked_hours)
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del self.parked_vehicles[license_plate]
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return fee
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else:
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raise ValueError("No pricing rule for this vehicle type.")
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class ParkingSystemApp:
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def __init__(self, master, parking_manager):
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self.master = master
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self.parking_manager = parking_manager
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master.title("停车场管理系统")
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self.vehicle_listbox = tk.Listbox(master, width=50)
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self.vehicle_listbox.pack(pady=10)
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self.search_entry = tk.Entry(master)
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self.search_entry.pack(pady=5)
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tk.Button(master, text="查询车辆", command=self.search_vehicle).pack(side=tk.LEFT, padx=5)
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tk.Button(master, text="录入入场", command=self.add_vehicle).pack(side=tk.LEFT, padx=5)
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tk.Button(master, text="删除出场", command=self.remove_vehicle).pack(side=tk.LEFT, padx=5)
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tk.Button(master, text="退出系统", command=self.quit_app).pack(side=tk.RIGHT, padx=5)
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# 示例数据，实际应用中应从数据库读取
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self.vehicles = ["ABC123", "XYZ789", "CDE456"]
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self.update_ui_vehicles()
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def update_ui_vehicles(self):
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self.vehicle_listbox.delete(0, tk.END)
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for plate in self.parking_manager.parked_vehicles.keys():
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self.vehicle_listbox.insert(tk.END, plate)
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def search_vehicle(self):
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query = self.search_entry.get().strip()
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if query:
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self.vehicle_listbox.delete(0, tk.END)
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for plate in self.parking_manager.parked_vehicles.keys():
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if query.lower() in plate.lower():
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self.vehicle_listbox.insert(tk.END, plate)
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def add_vehicle(self):
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new_vehicle = simpledialog.askstring("录入车辆", "请输入车牌号:")
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if new_vehicle and new_vehicle not in self.vehicles:
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car = Vehicle(new_vehicle, "car")
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parking_manager.park_vehicle(car) # 假设park_vehicle方法已更新数据库
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self.update_ui_vehicles() # 添加车辆后立即刷新UI
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def remove_vehicle(self):
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selected = self.vehicle_listbox.curselection()
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if selected:
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plate = self.vehicle_listbox.get(selected[0])
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fee = parking_manager.unpark_vehicle(plate)
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messagebox.showinfo("停车费用", f"车辆 {plate} 的停车费用为：{fee}元")
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self.update_ui_vehicles() # 移除车辆后刷新UI
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def quit_app(self):
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self.master.destroy()
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def login_success(username_entry, password_entry, parking_manager):
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expected_username = "1"
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expected_password = "1" # 这里设置具体的密码
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entered_username = username_entry.get().strip()
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entered_password = password_entry.get().strip()
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if entered_username == expected_username and entered_password == expected_password:
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login_window.withdraw()
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open_main_system(parking_manager)
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else:
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messagebox.showerror("登录失败", "用户名或密码错误，请重试。")
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def open_main_system(parking_manager):
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main_system_window = tk.Toplevel(login_window)
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main_system_window.title("停车场管理系统 - 主功能")
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app = ParkingSystemApp(main_system_window, parking_manager)
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main_system_window.protocol("WM_DELETE_WINDOW", lambda: [main_system_window.destroy(), login_window.destroy()])
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# 初始化停车场管理器
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parking_manager = ParkingLotManager()
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parking_manager.add_pricing_rule("car", 2, 20) # 小型车每小时2元，每日最高20元
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# 登录界面
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login_window = tk.Tk()
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login_window.title("停车场管理系统 - 登录")
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label_username = tk.Label(login_window, text="用户名:")
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label_username.pack()
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entry_username = tk.Entry(login_window)
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entry_username.pack()
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label_password = tk.Label(login_window, text="密码:")
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label_password.pack()
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entry_password = tk.Entry(login_window, show="*")
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entry_password.pack()
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button_login = tk.Button(login_window, text="登录", command=lambda: login_success(entry_username, entry_password, parking_manager))
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button_login.pack(pady=10)
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login_window.mainloop() |
