0527

login.py

@@ -0,0 +1,92 @@
+import tkinter as tk
+from tkinter import messagebox
+import pymysql
+
+class Application(tk.Frame):
+    def __init__(self, master=None):
+        super().__init__(master)
+        self.master = master
+        self.pack()
+        self.create_widgets()
+
+    def create_widgets(self):
+        self.label_username = tk.Label(self, text="Username:")
+        self.label_username.grid(row=0, column=0)
+
+        self.entry_username = tk.Entry(self)
+        self.entry_username.grid(row=0, column=1)
+
+        self.label_password = tk.Label(self, text="Password:")
+        self.label_password.grid(row=1, column=0)
+
+        self.entry_password = tk.Entry(self, show="*")
+        self.entry_password.grid(row=1, column=1)
+
+        self.register_button = tk.Button(self, text="Register", command=self.register_user)
+        self.register_button.grid(row=2, column=1)
+
+        self.login_button = tk.Button(self, text="Login", command=self.login_user)
+        self.login_button.grid(row=3, column=1)
+
+    def register_user(self):
+        username = self.entry_username.get()
+        password = self.entry_password.get()
+
+        self.save_to_db(username, password)
+        self.clear_fields()
+
+    def login_user(self):
+        username = self.entry_username.get()
+        password = self.entry_password.get()
+
+        self.validate_credentials(username, password)
+        self.clear_fields()
+
+    def save_to_db(self, username, password):
+        # 连接数据库
+        db = pymysql.connect(host='localhost',
+                             user='your_username',
+                             password='your_password',
+                             database='your_database',
+                             charset='utf8mb4')
+
+        try:
+            with db.cursor() as cursor:
+                sql = "INSERT INTO users (username, password) VALUES (%s, %s)"
+                cursor.execute(sql, (username, password))
+                db.commit()
+                messagebox.showinfo("Registration", "User registered successfully!")
+        except Exception as e:
+            messagebox.showerror("Registration", f"Error: {e}")
+        finally:
+            db.close()
+
+    def validate_credentials(self, username, password):
+        # 连接数据库
+        db = pymysql.connect(host='localhost',
+                             user='your_username',
+                             password='your_password',
+                             database='your_database',
+                             charset='utf8mb4')
+
+        try:
+            with db.cursor() as cursor:
+                sql = "SELECT * FROM users WHERE username=%s AND password=%s"
+                cursor.execute(sql, (username, password))
+                result = cursor.fetchone()
+                if result:
+                    messagebox.showinfo("Login", "Login successful!")
+                else:
+                    messagebox.showerror("Login", "Invalid credentials.")
+        except Exception as e:
+            messagebox.showerror("Login", f"Error: {e}")
+        finally:
+            db.close()
+
+    def clear_fields(self):
+        self.entry_username.delete(0, tk.END)
+        self.entry_password.delete(0, tk.END)
+
+root = tk.Tk()
+app = Application(master=root)
+app.mainloop()