Tkinter制作登录界面以及登陆后页面切换（二）
续接上集，废话不多说，开搞!
新增功能
- 数据库管理
- 用户表创建（用户信息增删改查操作）
- 完善登录校验
1. 数据库管理（SqlLite）
下面代码中 from data import Sql, BcryptUtils 引入的是自己写的包，Sql用来记录需要初始化的信息（创建基础表，添加管理用户等）， BcryptUtils 主要是对密码进行加密哈希和校验密码是否正确
import json
import sqlite3
from data import Sql, BcryptUtils
class SqlUtils:
def __init__(self):
# 不再在初始化时直接建立连接，而是在需要时建立
self.database_name = 'platform.db'
def init(self):
""" 初始化数据库 """
# 创建基础数据表和初始化表单数据时建立连接并在完成后关闭
with sqlite3.connect(self.database_name) as conn:
cursor = conn.cursor()
for sql in Sql.create_sqls:
cursor.execute(sql)
for sql in Sql.insert_sqls:
cursor.execute(sql)
conn.commit()
def query(self, sql):
"""
查询数据，返回格式:{'字段名':'数值'}
:param sql: 需要查询的sql
:return: 返回查询到的数据，没有数据时返回None
"""
with sqlite3.connect(self.database_name) as conn:
cursor = conn.cursor()
cursor.execute(sql)
_rows = cursor.fetchall()
columns = [description[0] for description in cursor.description]
return [dict(zip(columns, _row)) for _row in _rows]
def insert(self, sql: str):
"""
插入数据方法
:param sql: 插入数据的sql
:return: 成功返回True，否则False
"""
with sqlite3.connect(self.database_name) as conn:
cursor = conn.cursor()
cursor.execute(sql)
conn.commit()
rows_affected = cursor.rowcount
return rows_affected > 0
def insert_json(self, table_name: str, data_dict: json) -> object:
# 解析 JSON 获取键值对
columns = ', '.join(data_dict.keys())
placeholders = ', '.join(['?'] * len(data_dict))
values = tuple(data_dict.values())
with sqlite3.connect(self.database_name) as conn:
cursor = conn.cursor()
# 拼接 SQL 语句
sql = f"INSERT INTO {table_name} ({columns}) VALUES ({placeholders})"
try:
cursor.execute(sql, values)
conn.commit()
return True
except Exception as e:
print(f"插入失败：{e}")
conn.rollback()
return False
def delete(self, table_name: str, data_dict: json):
if not data_dict or len(data_dict) == 0:
return False, "条件为空，不允许删除。"
conditions = []
values = []
for key, value in data_dict.items():
conditions.append(f"{key}=?")
values.append(value)
sql = f"DELETE FROM {table_name} WHERE {' AND '.join(conditions)}"
with sqlite3.connect(self.database_name) as conn:
try:
cursor = conn.cursor()
cursor.execute(sql, values)
conn.commit()
rows_affected = cursor.rowcount
return rows_affected > 0
except Exception as e:
print(f"删除失败：{e}")
conn.rollback()
return False
def login_user(self, username, password):
"""
用户登录判断接口,返回True代表允许登录
:param username: 用户账号
:param password: 用户密码
:return: 成功返回True,用户数据，失败则返回False,原因
"""
user_data = self.query(f"SELECT * FROM sys_user WHERE username='{username}'")
if user_data:
row = user_data[0]
if BcryptUtils.check_password(password, row['password']):
return True, row
else:
return False, '账号或密码错误'
else:
return False, "没有当前登录的账号信息。"
if __name__ == '__main__':
sql_utils = SqlUtils()
sql_utils.init()
sql_utils.insert_json("sys_user", {
"name": "测试", "username": "admin",
"password": BcryptUtils.hash_password('123456')
})
input_username = "admin"
input_password = "123456"
res, data = sql_utils.login_user(input_username, input_password)
if res is True:
extend_str = data.get('extend')
extend_dict = json.loads(extend_str) if extend_str else {}
print(f"欢迎您，{data.get('name')}，您的账号是：{data.get('username')}，头像：{extend_dict.get('img')}")
else:
print(f'{data}')
# 删除用户
sql_utils.delete("sys_user", {
"username": "admin"
})
2. 用户表创建（用户信息增删改查操作）
data/Sql.py
create_sqls = []
create_drop_user = "DROP TABLE IF EXISTS sys_user;"
create_sqls.append(create_drop_user)
create_user = '''
CREATE TABLE IF NOT EXISTS sys_user
(
id INTEGER PRIMARY KEY,
name varchar(255) not null,
username varchar(32) not null,
password varchar(255) not null,
is_active blob default false not null,
extend json,
unique (username)
);
'''
create_sqls.append(create_user)
insert_sqls = []
insert_user = """
insert into sys_user(name, username, password, extend)
values ('超级管理员', 'admin',
'$2b$12$v/PNEi9kMoAafg17SneZ8eiX2/CC/BGWjCI4l.ynkfLcRhXm4TPdW',
'{"img":"http:127.0.0.1/statics/super/image/super.png"}');
"""
insert_sqls.append(insert_user)
3. 完善登录校验
data/BcryptUtils.py ,引入依赖命令： pip install bcrypt
import bcrypt
def check_password(plain_password, hashed_password):
"""
验证密码
:param plain_password: 明文密码
:param hashed_password: 哈希密码
:return: 匹配则返回True，否则返回False
"""
plain_password = plain_password.encode('utf-8')
hashed_password = hashed_password.encode('utf-8')
return bcrypt.checkpw(plain_password, hashed_password)
def hash_password(password):
"""
对密码进行加密
:param password: 用户密码
:return: 返回加密的密文
"""
password = password.encode('utf-8')
hashed = bcrypt.hashpw(password, bcrypt.gensalt())
return hashed.decode('utf-8')
login/ui.py 不清楚这个去看一下一中的ui.py全代码，此处只展示修改的信息
from data.SqlLiteUtils import SqlUtils
class Controller:
# 导入UI类后，替换以下的 object 类型，将获得 IDE 属性提示功能
ui: WinGUI
def __init__(self):
....保持原有代码....下方是新增代码
self.sql_utils = SqlUtils()
def login_submit(self, evt):
u, p = self.ui.login()
if u is None or len(u) == 0:
tkinter.messagebox.showinfo("登录提示", "请输入登录用户名！")
elif p is None or len(p) == 0:
tkinter.messagebox.showinfo("登录提示", "请输入登录密码！")
print(
f"触发了登录操作，地址：{self.url},账号：{u},密码：{p}")
res, user = self.sql_utils.login_user(u, p)
if res is True:
print(f"欢迎您，{user.get('name')}")
self.ui.destroy()
from home.control import Controller as HomeUIController
from home.ui import Win as MainWin
app = MainWin(HomeUIController())
app.set_user(user)
app.mainloop()
else:
tkinter.messagebox.showinfo("登录提示", user)
home/ui.py 此处一样只展示心增代码
class WinGUI(Tk):
def __init__(self):
super().__init__()
self.user: json = {}
def set_user(self, user: json):
self.user = user
好了，到这里结束了，后续会开始做注册用户操作，需要整体源代码的可以留言或SL俺！
标签：Tkinter,--,self,校验,cursor,user,sql,password,data From： https://blog.csdn.net/qq_45335996/article/details/142550229