Python + Tkinter連接本地MySQL數據庫簡單實現註冊登錄
項目結構:
源代碼:
# -*- coding: utf-8 -*- """ @date: 2022/01/09 17:40 @author: Anker @python:v3.10 """ import tkinter as tk import tkinter.messagebox import pymysql # 定義要執行的創建表的SQL語句 test_sql = """ CREATE TABLE IF NOT EXISTS user( id INT auto_increment PRIMARY KEY, name varchar(20) not null, password varchar(20) not null )ENGINE=innodb DEFAULT CHARSET=utf8; """ # 登錄窗口 window = tk.Tk() window.title('學生考試系統') window.geometry('800x500') # 登錄背景圖片 canvas = tk.Canvas(window, height=1920, width=1080) login_background = tk.PhotoImage(file='./view.png') login_image = canvas.create_image(0, 0, anchor='nw', image=login_background) canvas.pack(side='top') # 用戶名密碼標簽 tk.Label(window, text='用戶名:', bg='yellow').place(x=300, y=200) tk.Label(window, text='密 碼:', bg='yellow').place(x=300, y=250) # 用戶名輸入框 var_user_name = tk.StringVar() entry_user_name = tk.Entry(window, textvariable=var_user_name) entry_user_name.place(x=370, y=200) # 密碼輸入框 var_user_pwd = tk.StringVar() entry_user_pwd = tk.Entry(window, textvariable=var_user_pwd, show='*') entry_user_pwd.place(x=370, y=250) # 登錄函數 def user_login(): # 輸入框獲取用戶名密碼 user_name = var_user_name.get() user_password = var_user_pwd.get() # 連接test_sql數據庫 conn = pymysql.connect(host="localhost", user="root", password="123456", database="test_sql", charset="utf8") curs = conn.cursor() # 執行SQL語句,創建user數據表 curs.execute(test_sql) # 執行SQL語句,從user數據表中查詢name和password字段值 curs.execute("SELECT name,password FROM user") # 將數據庫查詢的結果保存在result中 result = curs.fetchall() # fetchone()函數它的返回值是單個的元組, 也就是一行記錄, 如果沒有結果, 那就會返回null # fetchall()函數它的返回值是多個元組, 即返回多個行記錄, 如果沒有結果, 返回的是() # assert result, "數據庫無該用戶信息" # 添加斷言,判斷數據庫有無該用戶信息,沒有就直接斷言錯誤 # 登錄賬號操作 name_list = [it[0] for it in result] # 從數據庫查詢的result中遍歷查詢元組中第一個元素name # 判斷用戶名或密碼不能為空 if not(user_name and user_password): tk.messagebox.showwarning(title='警告', message='用戶名或密碼不能為空') # 判斷用戶名和密碼是否匹配 elif user_name in name_list: if user_password == result[name_list.index(user_name)][1]: tk.messagebox.showinfo(title='歡迎您', message=' 登錄成功!\r\n當前登錄賬號為:' + user_name) selection() else: tk.messagebox.showerror(title='錯誤', message='密碼輸入錯誤') # 賬號不在數據庫中,則彈出是否註冊的框 else: is_signup = tk.messagebox.askyesno(title='提示', message='該賬號不存在,是否現在註冊?') if is_signup: user_register() # 註冊函數 def user_register(): # 確認註冊函數 def register_confirm(): # 獲取輸入框內的內容 name = new_name.get() password = new_password.get() password_confirm = new_password_confirm.get() # 先在本地手動創建一個test_sql數據庫,然後連接該數據庫 conn = pymysql.connect(host="localhost", user="root", password="123456", database="test_sql", charset="utf8") curs = conn.cursor() # 註冊賬號操作 try: # 執行SQL語句,創建user數據表 curs.execute(test_sql) # 向user數據表中插入語句 insert_sql = "INSERT INTO user(name, password) VALUES ('%s', '%s')" % (name, password) # 讀取user數據表中的name和password字段值 read_sql = f'''select * from user where name = "{name}" and password = "{password}" ''' user_data = curs.execute(read_sql) # 判斷註冊賬號和密碼 if not (name and password): tk.messagebox.showwarning(title='警告', message='註冊賬號或密碼不能為空') elif password != password_confirm: tk.messagebox.showwarning(title='警告', message='兩次密碼輸入不一致,請重新輸入') else: if user_data.real: tk.messagebox.showwarning(title='警告', message='該註冊賬號已存在') else: curs.execute(insert_sql) tk.messagebox.showinfo(title='恭喜您', message=' 註冊成功!\r\n註冊賬號為:' + name) print("數據插入成功") # 提交到數據庫執行 conn.commit() curs.close() except IOError: print("數據插入失敗") conn.rollback() # 關閉數據庫連接 conn.close() window_sign_up.destroy() # 註冊窗口 window_sign_up = tk.Toplevel(window) window_sign_up.geometry('350x200') window_sign_up.title('歡迎註冊') # 註冊賬號及標簽、輸入框 new_name = tk.StringVar() tk.Label(window_sign_up, bg='green', text='註冊賬號:').place(x=50, y=10) tk.Entry(window_sign_up, textvariable=new_name).place(x=150, y=10) # 註冊密碼及標簽、輸入框 new_password = tk.StringVar() tk.Label(window_sign_up, bg='green', text='密 碼:').place(x=50, y=50) tk.Entry(window_sign_up, textvariable=new_password, show='*').place(x=150, y=50) # 重復密碼及標簽、輸入框 new_password_confirm = tk.StringVar() tk.Label(window_sign_up, bg='green', text='確認密碼:').place(x=50, y=90) tk.Entry(window_sign_up, textvariable=new_password_confirm, show='*').place(x=150, y=90) # 確認註冊按鈕及位置 bt_confirm_sign_up = tk.Button(window_sign_up, bg='green', text='確認註冊', command=register_confirm) bt_confirm_sign_up.place(x=150, y=130) # 選擇題函數 def selection(): def wrong(): tk.messagebox.showerror(title='錯誤', message='抱歉,您答錯瞭') def right(): tk.messagebox.showinfo(title='提示', message='恭喜您,答對瞭') # 選擇題窗口 window_options = tk.Toplevel(window) window_options.geometry('350x200') window_options.title('選擇題') # 在圖形界面上創建一個標簽label用以顯示並放置 var = tk.StringVar() # 定義一個var用來將radiobutton的值和Label的值聯系在一起. lab = tk.Label(window_options, bg='red', fg='white', width=50) lab.pack() lab.config(text='第1題:兩個銳角均為60度的三角形是什麼三角形()' + var.get()) # 創建3個radiobutton選項,其中variable=var, value='A'表示:當鼠標選中其中一個選項,把value的值A放到變量var中,然後賦值給variable radio1 = tk.Radiobutton(window_options, text='A:銳角三角形', variable=var, value='A', command=wrong) radio1.pack() radio2 = tk.Radiobutton(window_options, text='B:鈍角三角形', variable=var, value='B', command=wrong) radio2.pack() radio3 = tk.Radiobutton(window_options, text='C:等邊三角形', variable=var, value='C', command=right) radio3.pack() radio4 = tk.Radiobutton(window_options, text='D:直角三角形', variable=var, value='D', command=wrong) radio4.pack() # 註冊和登錄按鈕 bt_register = tk.Button(window, bg='yellow', text='註冊', command=user_register) bt_register.place(x=380, y=300) bt_login = tk.Button(window, bg='yellow', text='登錄', command=user_login) bt_login.place(x=440, y=300) # 主循環 window.mainloop()
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