Python | 人脸识别系统 —— 管理员操作
本博客为人脸识别系统的管理员操作代码解释
人脸识别系统博客汇总：人脸识别系统-博客索引
项目GitHub地址：Su-Face-Recognition: A face recognition for user logining
注意：阅读本博客前请先参考以下博客
工具安装、环境配置：人脸识别系统-简介
UI界面设计：人脸识别系统-UI界面设计
UI事件处理：人脸识别系统-UI事件处理
一、数据库操作
# -*- coding: utf-8 -*-
import pymysql
def init_conn():
conn = pymysql.connect(
host="127.0.0.1", # 数据库的IP地址
user="root", # 数据库用户名称
password="root", # 数据库用户密码
db="contest", # 数据库名称
port=3306, # 数据库端口名称
charset="utf8" # 数据库的编码方式
)
return conn
def execute_with_bool(sql_str, args=()):
conn = init_conn()
cursor = conn.cursor()
try:
cursor.execute(sql_str, args)
conn.commit()
return True
except Exception as e:
conn.rollback()
print(e)
return False
finally:
cursor.close()
def execute_with_list(sql_str):
conn = init_conn()
cursor = conn.cursor()
results = []
try:
cursor.execute(sql_str)
results = cursor.fetchall()
except Exception as e:
conn.rollback()
print(e)
finally:
cursor.close()
return results
def search_by_name(name):
return execute_with_list("select * from admin where name = " + name)
def delete_by_name(name):
return execute_with_bool("delete from warn where name = %s", name)
二、管理员登录
# 管理员登录界面
class LoginWindow(QDialog, AdminLoginUi):
def __init__(self, parent=None):
super(LoginWindow, self).__init__(parent)
self.setupUi(self)
self.minimize_button.clicked.connect(self.showMinimized)
self.close_button.clicked.connect(self.cancel_login)
self.confirm_button.clicked.connect(self.search_user)
self.cancel_button.clicked.connect(self.cancel_login)
# 点击确认，搜索管理员
def search_user(self):
input_name = self.name_lineEdit.text()
input_password = self.password_lineEdit.text()
if input_name == "":
QMessageBox.about(self, '提示', '姓名不能为空')
elif input_password == "":
QMessageBox.about(self, '提示', '密码不能为空')
else:
row = AdminSqlUtil.search_by_name("\"" + input_name + "\"")
if row:
result = row[0]
password = result[1]
if input_password != password:
QMessageBox.about(self, '提示', '密码输入错误')
else:
global ADMIN_LOGIN_FLAG
ADMIN_LOGIN_FLAG = True
QMessageBox.about(self, '提示', '登录成功')
self.close_window()
else:
QMessageBox.about(self, '提示', '该用户不存在')
# 点击取消按钮
def cancel_login(self):
global ADMIN_LOGIN_FLAG
ADMIN_LOGIN_FLAG = False
self.close_window()
# 关闭窗口
def close_window(self):
self.name_lineEdit.setPlaceholderText("请输入姓名")
self.password_lineEdit.setPlaceholderText("请输入密码")
self.close()
三、用户解锁
# 用户解锁
class UnloadWindow(QDialog, AdminUnloadUi):
def __init__(self, parent=None):
super(UnloadWindow, self).__init__(parent)
self.setupUi(self)
self.minimize_button.clicked.connect(self.showMinimized)
self.close_button.clicked.connect(self.close_window)
self.confirm_button.clicked.connect(self.unload_user)
self.cancel_button.clicked.connect(self.close_window)
# 解锁用户
def unload_user(self):
input_name = self.name_lineEdit.text()
input_password = self.password_lineEdit.text()
if input_name == "":
QMessageBox.about(self, '提示', '姓名不能为空')
elif input_password == "":
QMessageBox.about(self, '提示', '密码不能为空')
else:
row = UserSqlUtil.search_by_name("\"" + input_name + "\"")
if row:
result = row[0]
password = result[1]
if input_password != password:
QMessageBox.about(self, '提示', '密码输入错误')
else:
if AdminSqlUtil.delete_by_name(row[0]):
QMessageBox.about(self, '提示', '解锁成功')
else:
QMessageBox.about(self, '提示', '解锁失败，请重试')
self.close_window()
else:
QMessageBox.about(self, '提示', '该用户不存在')
# 关闭窗口
def close_window(self):
self.name_lineEdit.setPlaceholderText("请输入姓名")
self.password_lineEdit.setPlaceholderText("请输入密码")
self.close()
四、用户删除
# 用户删除
class DeleteWindow(QDialog, AdminDeleteUi):
def __init__(self, parent=None):
super(DeleteWindow, self).__init__(parent)
self.setupUi(self)
self.minimize_button.clicked.connect(self.showMinimized)
self.close_button.clicked.connect(self.close_window)
self.confirm_button.clicked.connect(self.user_delete)
self.cancel_button.clicked.connect(self.close_window)
def user_delete(self):
input_name = self.name_lineEdit.text()
input_password = self.password_lineEdit.text()
if input_name == "":
QMessageBox.about(self, '提示', '姓名不能为空')
elif input_password == "":
QMessageBox.about(self, '提示', '密码不能为空')
else:
row = UserSqlUtil.search_by_name("\"" + input_name + "\"")
if row:
result = row[0]
password = result[1]
if input_password != password:
QMessageBox.about(self, '提示', '密码输入错误')
else:
flag = UserSqlUtil.delete_by_name(input_name)
if flag:
QMessageBox.about(self, '提示', '删除成功')
else:
QMessageBox.about(self, '提示', '删除失败，请重试')
self.close_window()
else:
QMessageBox.about(self, '提示', '该用户不存在')
# 关闭窗口
def close_window(self):
self.name_lineEdit.setPlaceholderText("请输入姓名")
self.password_lineEdit.setPlaceholderText("请输入密码")
self.close()
阅读完本博客后可以继续阅读：
摄像头画面展示：人脸识别系统-摄像头画面展示
用户端逻辑：
- 人脸识别：Python | 人脸识别系统 — 人脸识别
- 活体检测：Python | 人脸识别系统 — 活体检测
- 背景模糊：Python | 人脸识别系统 — 背景模糊
- 姿态检测：Python | 人脸识别系统 — 姿态检测
- 人脸比对：Python | 人脸识别系统 — 人脸比对
- 用户操作：Python | 人脸识别系统 — 用户操作
注：以上代码仅为参考，若需要运行，请参考项目GitHub完整源代码： Su-Face-Recognition: A face recognition for user logining