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changePasswordDialog.py
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changePasswordDialog.py
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import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import qdarkstyle
import time
from PyQt5.QtSql import *
import hashlib
class changePasswordDialog(QDialog):
def __init__(self, parent=None):
super(changePasswordDialog, self).__init__(parent)
self.setWindowModality(Qt.WindowModal)
self.setWindowTitle("修改密码")
self.setUpUI()
def setUpUI(self):
self.resize(300, 280)
self.layout = QFormLayout()
self.setLayout(self.layout)
self.titlelabel = QLabel(" 修改密码")
self.studentIdLabel = QLabel("学 号：")
# self.studentNameLabel=QLabel("姓 名：")
self.oldPasswordLabel = QLabel("旧 密 码：")
self.passwordLabel = QLabel("新 密 码：")
self.confirmPasswordLabel = QLabel("确认密码：")
self.studentIdEdit = QLineEdit()
# self.studentNameEdit=QLineEdit()
self.oldPasswordEdit = QLineEdit()
self.passwordEdit = QLineEdit()
self.confirmPasswordEdit = QLineEdit()
self.changePasswordButton = QPushButton("确认修改")
self.changePasswordButton.setFixedWidth(140)
self.changePasswordButton.setFixedHeight(32)
self.layout.addRow("", self.titlelabel)
self.layout.addRow(self.studentIdLabel, self.studentIdEdit)
# self.layout.addRow(self.studentNameLabel,self.studentNameEdit)
self.layout.addRow(self.oldPasswordLabel, self.oldPasswordEdit)
self.layout.addRow(self.passwordLabel, self.passwordEdit)
self.layout.addRow(self.confirmPasswordLabel, self.confirmPasswordEdit)
self.layout.addRow("", self.changePasswordButton)
font = QFont()
font.setPixelSize(20)
self.titlelabel.setFont(font)
font.setPixelSize(16)
self.studentIdLabel.setFont(font)
# self.studentNameLabel.setFont(font)
self.oldPasswordLabel.setFont(font)
self.passwordLabel.setFont(font)
self.confirmPasswordLabel.setFont(font)
font.setPixelSize(16)
self.studentIdEdit.setFont(font)
self.changePasswordButton.setFont(font)
# self.studentNameEdit.setFont(font)
font.setPixelSize(10)
self.oldPasswordEdit.setFont(font)
self.passwordEdit.setFont(font)
self.confirmPasswordEdit.setFont(font)
self.titlelabel.setMargin(8)
self.layout.setVerticalSpacing(10)
# 设置长度
self.studentIdEdit.setMaxLength(10)
self.oldPasswordEdit.setMaxLength(16)
self.passwordEdit.setMaxLength(16)
self.confirmPasswordEdit.setMaxLength(16)
# 设置密码掩膜
self.oldPasswordEdit.setEchoMode(QLineEdit.Password)
self.passwordEdit.setEchoMode(QLineEdit.Password)
self.confirmPasswordEdit.setEchoMode(QLineEdit.Password)
# 设置校验
reg = QRegExp("PB[0~9]{8}")
pValidator = QRegExpValidator(self)
pValidator.setRegExp(reg)
self.studentIdEdit.setValidator(pValidator)
reg = QRegExp("[a-zA-z0-9]+$")
pValidator.setRegExp(reg)
self.oldPasswordEdit.setValidator(pValidator)
self.passwordEdit.setValidator(pValidator)
self.confirmPasswordEdit.setValidator(pValidator)
# 设置信号与槽
self.changePasswordButton.clicked.connect(self.changePasswordButtonClicked)
def changePasswordButtonClicked(self):
studentId = self.studentIdEdit.text()
oldPassword = self.oldPasswordEdit.text()
password = self.passwordEdit.text()
confirmPassword = self.confirmPasswordEdit.text()
if (studentId == "" or oldPassword == "" or password == "" or confirmPassword == ""):
print(QMessageBox.warning(self, "警告", "输入不可为空，请重新输入", QMessageBox.Yes, QMessageBox.Yes))
return
db = QSqlDatabase.addDatabase("QSQLITE")
db.setDatabaseName('./db/LibraryManagement.db')
db.open()
query = QSqlQuery()
sql = "SELECT * FROM User WHERE StudentId='%s'" % studentId
query.exec_(sql)
# 如果用户不存在
if (not query.next()):
print(QMessageBox.warning(self, "警告", "该用户不存在，请重新输入", QMessageBox.Yes, QMessageBox.Yes))
self.studentIdEdit.clear()
return
# 如果密码错误
hl = hashlib.md5()
hl.update(oldPassword.encode(encoding='utf-8'))
md5password = hl.hexdigest()
sql = "SELECT * FROM User WHERE Password='%s' AND StudentId='%s'" %(md5password,studentId)
query.exec_(sql)
if (not query.next()):
print(QMessageBox.warning(self, "警告", "原密码输入错误,请重新输入", QMessageBox.Yes, QMessageBox.Yes))
self.oldPasswordEdit.clear()
return
# 密码与确认密码不同
if(password!=confirmPassword):
print(QMessageBox.warning(self,"警告","两次输入密码不同,请确认输入",QMessageBox.Yes,QMessageBox.Yes))
self.passwordEdit.clear()
self.confirmPasswordEdit.clear()
return
# 修改密码
hl = hashlib.md5()
hl.update(password.encode(encoding='utf-8'))
md5password = hl.hexdigest()
sql="UPDATE User SET Password='%s' WHERE StudentId='%s'"%(md5password,studentId)
query.exec_(sql)
db.commit()
QMessageBox.information(self,"提醒","修改密码成功，请登录系统!",QMessageBox.Yes,QMessageBox.Yes)
self.close()
return
if __name__ == "__main__":
app = QApplication(sys.argv)
app.setWindowIcon(QIcon("./images/MainWindow_1.png"))
app.setStyleSheet(qdarkstyle.load_stylesheet_pyqt5())
mainMindow = changePasswordDialog()
mainMindow.show()
sys.exit(app.exec_())