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import tkinter as tk
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from tkinter import messagebox
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from tkinter import simpledialog
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# 假设有一个UserDB类用于数据库操作，这里简化处理
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class UserDB:
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@staticmethod
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def user_exists(username):
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# 实际情况下，这里应该查询数据库
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return False
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@staticmethod
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def user_login(username, password):
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# 实际情况下，这里应该从数据库查询用户信息并验证密码
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# 返回True表示验证成功，False表示失败
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return True if username == "test" and password == "test" else False # 示例验证逻辑，实际应用需替换
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# 假设的商品列表
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PRODUCTS = [
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{"id": 1, "name": "商品A", "price": 100},
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{"id": 2, "name": "商品B", "price": 200},
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# 添加更多商品...
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]
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# 购物车数据结构，使用字典方便统计商品数量
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SHOPPING_CART = {}
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class ShoppingCartSystem(tk.Tk):
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def __init__(self):
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super().__init__()
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self.title("购物车系统")
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self.geometry("400x300")
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self.create_menu()
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def create_menu(self):
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buttons_frame = tk.Frame(self)
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buttons_frame.pack(pady=20)
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tk.Button(buttons_frame, text="注册", command=self.register).pack(pady=5)
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tk.Button(buttons_frame, text="登录", command=self.login).pack(pady=5)
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tk.Button(buttons_frame, text="购物", command=self.shopping).pack(pady=5)
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tk.Button(buttons_frame, text="结账", command=self.checkout).pack(pady=5)
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tk.Button(buttons_frame, text="退货", command=self.return_goods).pack(pady=5)
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tk.Button(buttons_frame, text="消费记录", command=self.shopping_history).pack(pady=5)
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tk.Button(buttons_frame, text="退出", command=self.quit).pack(pady=5)
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def register(self):
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# 弹出对话框收集用户输入
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username = simpledialog.askstring("注册", "请输入用户名:")
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password = simpledialog.askstring("注册", "请输入密码:", show='*')
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confirm_password = simpledialog.askstring("注册", "请再次输入密码:", show='*')
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# 简单的输入验证
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if not username or not password or not confirm_password:
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messagebox.showerror("错误", "所有字段都需要填写！")
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return
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if password != confirm_password:
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messagebox.showerror("错误", "两次输入的密码不一致！")
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return
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if UserDB.user_exists(username):
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messagebox.showerror("错误", "用户名已存在！")
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return
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# 保存用户信息到数据库
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UserDB.add_user(username, password)
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messagebox.showinfo("成功", "注册成功！")
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def login(self):
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# 弹出对话框收集用户输入
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username = simpledialog.askstring("登录", "请输入用户名:")
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password = simpledialog.askstring("登录", "请输入密码:", show='*')
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# 验证用户名和密码
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if not username or not password:
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messagebox.showerror("错误", "用户名和密码都是必填项！")
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return
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if UserDB.user_login(username, password):
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messagebox.showinfo("成功", f"欢迎，{username}！登录成功。")
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# 实际应用中可能需要在这里实现页面跳转逻辑
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else:
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messagebox.showerror("错误", "用户名或密码错误，请重试。")
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def shopping(self):
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# 简化处理，展示商品列表并让用户选择商品添加到购物车
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selected_product_id = simpledialog.askinteger("购物", "请选择商品编号（例如：1）：", minvalue=1,
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maxvalue=len(PRODUCTS))
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if selected_product_id is not None:
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selected_product = PRODUCTS[selected_product_id - 1]
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product_info = f"商品名：{selected_product['name']}，价格：{selected_product['price']}元"
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# 提示用户确认是否添加到购物车
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response = messagebox.askyesno("确认添加", f"是否将商品 {selected_product['name']} 添加到购物车？")
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if response:
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# 添加商品到购物车
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if selected_product['id'] in SHOPPING_CART:
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SHOPPING_CART[selected_product['id']]['quantity'] += 1
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else:
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SHOPPING_CART[selected_product['id']] = {'name': selected_product['name'],
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'price': selected_product['price'], 'quantity': 1}
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messagebox.showinfo("成功", f"已将 {selected_product['name']} 添加到购物车！")
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else:
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messagebox.showinfo("取消", "操作已取消。")
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def checkout(self):
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if not SHOPPING_CART:
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messagebox.showinfo("提示", "购物车为空，请先添加商品！")
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return
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# 计算总价
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total_price = sum(item['price'] * item['quantity'] for item in SHOPPING_CART.values())
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# 展示结账信息
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cart_details = "\n".join(
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[f"{item['name']} x {item['quantity']} = {item['price'] * item['quantity']}元" for item in
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SHOPPING_CART.values()])
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checkout_message = f"您的购物车商品清单:\n{cart_details}\n总计: {total_price}元"
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# 使用messagebox显示结账信息，这里仅作为演示，实际应用中可能需要更复杂的界面
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response = messagebox.askyesno("结账确认", checkout_message)
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if response:
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# 清空购物车（实际应用中可能需要在服务器端同步此操作）
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SHOPPING_CART.clear()
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messagebox.showinfo("成功", "结账成功，感谢您的购买！")
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else:
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messagebox.showinfo("取消", "结账已取消。")
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def return_goods(self):
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if not SHOPPING_CART:
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messagebox.showinfo("提示", "购物车为空，没有商品可以退货！")
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return
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# 构建退货选择界面的逻辑
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def on_return_selected():
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# 获取用户选择的索引
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selected_indices = list_box.curselection()
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if not selected_indices:
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messagebox.showinfo("提示", "请至少选择一项商品进行退货！")
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return
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# 从购物车移除选中的商品
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for index in reversed(selected_indices):
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item_index = int(list_box.get(index).split(' ')[0]) # 假设列表显示为 "序号 商品名 x 数量 = 总价元"
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del SHOPPING_CART[item_index] # 这里直接根据商品ID（序号）移除，实际情况可能需要更复杂的匹配逻辑
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messagebox.showinfo("成功", "退货成功！已从购物车移除选中商品。")
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return_window.destroy() # 关闭退货窗口
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return_window = tk.Toplevel(self)
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return_window.title("选择退货商品")
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return_window.geometry("400x300")
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list_box_scrollbar = tk.Scrollbar(return_window)
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list_box = tk.Listbox(return_window, yscrollcommand=list_box_scrollbar.set)
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list_box.pack(side=tk.LEFT, fill=tk.BOTH, expand=True)
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list_box_scrollbar.pack(side=tk.RIGHT, fill=tk.Y)
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list_box_scrollbar.config(command=list_box.yview)
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# 将购物车中的商品添加到列表供选择
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for idx, (item_id, item_data) in enumerate(SHOPPING_CART.items(), start=1):
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item_str = f"{idx} {item_data['name']} x {item_data['quantity']} = {item_data['price'] * item_data['quantity']}元"
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list_box.insert(tk.END, item_str)
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tk.Button(return_window, text="确认退货", command=on_return_selected).pack(pady=10)
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def shopping_history(self):
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messagebox.showinfo("提示", "消费记录功能尚未实现")
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if __name__ == "__main__":
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app = ShoppingCartSystem()
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app.mainloop() |
