本文实例为大家分享了pyqt5利用pyqtDesigner实现登录界面的具体代码，供大家参考，具体内容如下
为便于操作 界面和逻辑分离
逻辑类：
import sys
import pymysql
from loginUI import * //导入
from PyQt5.QtWidgets import *
from PyQt5 import QtWidgets, QtCore, QtGui
from PyQt5.QtCore import *
from PyQt5.QtGui import
class Login(QtWidgets.QDialog):
def __init__(self):
super(Login, self).__init__()
self.ui = Ui_login_Ui()
self.ui.setupUi(self)
# self.setMinimumSize(QtCore.QSize(400, 200)) # 控制缩放范围
# self.setMaximumSize(QtCore.QSize(400, 200))
self.setWindowTitle("欢迎使用停车场管理系统")
self.setFixedSize(self.width(), self.height())
self.ui.labelTip.hide()
self.ui.labelTip.setText("密码或用户名不能为空!")
# 设置label字体
labelFont = QFont()
labelFont.setPixelSize(15)
# 设置动态背景
self.gif = QMovie('bg2.gif')
self.ui.label_2.setMovie(self.gif)
self.gif.start()
# 这在label属性
self.ui.labelTip.setStyleSheet(
"QLabel{color:red;font-size:12px;font-weight:bold;font-family:Roman times;}"
)
self.ui.userLabel.setStyleSheet("QLabel{background:white;}"
"QLabel{color:rgb(100,100,100,250);font-size:15px;font-weight:bold;font-family:Roman times;}"
"QLabel:hover{color:rgb(300,300,300,120);}")
self.ui.pwdlabel.setStyleSheet("QLabel{background:white;}"
"QLabel{color:rgb(100,100,100,250);font-size:15px;font-weight:bold;font-family:Roman times;}"
"QLabel:hover{color:rgb(300,300,300,120);}")
self.ui.label.setStyleSheet("QLabel{background:white;}"
"QLabel{color:rgb(100,100,100,250);font-size:15px;font-weight:bold;font-family:Roman times;}"
"QLabel:hover{color:rgb(300,300,300,120);}")
self.ui.loginButton.setStyleSheet("QPushButton{color:black}"
"QPushButton:hover{color:red}"
"QPushButton{background-color:lightblue}"
"QPushButton{border:2px}"
"QPushButton{border-radius:10px}"
"QPushButton{padding:2px 4px}")
self.ui.registerButton.setStyleSheet("QPushButton{color:black}"
"QPushButton:hover{color:red}"
"QPushButton{background-color:lightgreen}"
"QPushButton{border:2px}"
"QPushButton{border-radius:10px}"
"QPushButton{padding:2px 4px}")
palette = QPalette()
icon = QPixmap('bg2.gif').scaled(800, 600)
palette.setBrush(self.backgroundRole(), QBrush(icon))
self.setPalette(palette)
self.ui.userLabel.setFont(labelFont)
self.ui.pwdlabel.setFont(labelFont)
self.ui.label.setFont(labelFont)
# 设置控件尺寸
# self.ui.userlineEdit.setFrame(False)
# self.ui.pwdlineEdit.setFrame(False)
self.ui.pwdlineEdit.setEchoMode(QLineEdit.Password)# 输入框设为密码模式
self.ui.pwdlineEdit.setClearButtonEnabled(True)
self.ui.userlineEdit.setClearButtonEnabled(True)
self.ui.userlineEdit.setFixedWidth(190)
self.ui.userlineEdit.setFixedHeight(30)
self.ui.pwdlineEdit.setFixedWidth(190)
self.ui.pwdlineEdit.setFixedHeight(30)
self.ui.comboBox.setFixedWidth(100)
self.ui.comboBox.setFixedHeight(28)
self.ui.loginButton.setFixedSize(75, 28)
self.ui.registerButton.setFixedSize(75, 28)
self.ui.loginButton.setShortcut('Enter') # shortcut key
# 登陆的槽函数登陆按钮 最好写在init的析构函数中，避免链接多次产生异常
self.ui.loginButton.clicked.connect(self.slotLogin)
self.ui.registerButton.clicked.connect(self.slotRegister)
self.ui.pushButton.clicked.connect(self.findPwd)
name = self.ui.userlineEdit.text()
pwd = self.ui.pwdlineEdit.text()
identity = self.ui.comboBox.currentIndex()
identity = str(identity)
sql = "select * from administrater where username = '" + name + "' and password = '" + pwd + "' and identity= '"+ identity +"' "
db = PyMySQLHelper()
db.selectALL(sql)
def keyPressEvent(self, event):
if event.key() == QtCore.Qt.Key_Enter:
self.slotLogin()
def findPwd(self):
# self.accept()
self.u = FPwd_ui()
self.u.show()
# self.ui.exec()
def slotLogin(self):
# # 获得登录输入
name = self.ui.userlineEdit.text()
pwd = self.ui.pwdlineEdit.text()
print(name)
db = PyMySQLHelper()
identity = self.ui.comboBox.currentIndex() # 获取下标
identity = str(identity)
if name != '' and pwd != '':
if identity == '0':
sql = "select * from administrater where username = '" + name + "' and " \
"password = '" + pwd + "' and identity= '" + identity + "' "
print(sql)
# cursor.execute(sql)
# results = cursor.fetchall()
results = db.selectALL(sql)
if results:
self.ui1 = Finance()
# self.ui1.exec()
self.ui1.show()
self.close()
else:
OK = QMessageBox.warning(self, ("警告"), ("""账号或密码错误！"""))
# cursor.close()
# conn.close()
elif identity == '1':
sql = "select * from administrater where username = '" + name + "' and " \
"password = '" + pwd + "' and identity= '" + identity + "' "
print(sql)
# cursor.execute(sql)
# results = cursor.fetchall()
results = db.selectALL(sql)
if results:
self.ui2 = InfoManage()
self.ui2.show()
self.close()
else:
OK = QMessageBox.warning(self, ("警告"), ("""账号或密码错误！"""))
elif identity == '2':
sql = "select * from administrater where username = '" + name + "' and " \
"password = '" + pwd + "' and identity= '" + identity + "' "
print(sql)
results = db.selectALL(sql)
# print(identity)
if results:
self.uu = SeatManage()
self.uu.exec()
self.close()
else:
OK = QMessageBox.warning(self, ("警告"), ("""账号或密码错误！"""))
elif name == 'admin' and pwd == '123' and identity == '3':
self.a = Admin()
self.a.show()
self.close()
else:
if name == '':
OK = QMessageBox.warning(self, ("警告"), ("""请输入账号！"""))
if pwd == '':
OK = QMessageBox.warning(self, ("警告"), ("""请输入密码！"""))
# cursor.close()
# conn.close()
def slotRegister(self):
self.i = reUi() # self.i的窗口命名不能重复
self.i.exec_()
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
my = Login()
my.show()
sys.exit(app.exec_())
界面类：
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_login_Ui(object):
def setupUi(self, login_Ui):
login_Ui.setObjectName("login_Ui")
login_Ui.resize(581, 533)
self.gridLayoutWidget = QtWidgets.QWidget(login_Ui)
self.gridLayoutWidget.setGeometry(QtCore.QRect(160, 330, 295, 141))
self.gridLayoutWidget.setObjectName("gridLayoutWidget")
self.gridLayout = QtWidgets.QGridLayout(self.gridLayoutWidget)
self.gridLayout.setContentsMargins(0, 0, 0, 0)
self.gridLayout.setObjectName("gridLayout")
self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
self.horizontalLayout_2.setObjectName("horizontalLayout_2")
self.loginButton = QtWidgets.QPushButton(self.gridLayoutWidget)
self.loginButton.setObjectName("loginButton")
self.horizontalLayout_2.addWidget(self.loginButton)
self.registerButton = QtWidgets.QPushButton(self.gridLayoutWidget)
self.registerButton.setObjectName("registerButton")
self.horizontalLayout_2.addWidget(self.registerButton)
self.pushButton = QtWidgets.QPushButton(self.gridLayoutWidget)
self.pushButton.setObjectName("pushButton")
self.horizontalLayout_2.addWidget(self.pushButton)
self.gridLayout.addLayout(self.horizontalLayout_2, 4, 1, 1, 1)
self.userlineEdit = QtWidgets.QLineEdit(self.gridLayoutWidget)
self.userlineEdit.setObjectName("userlineEdit")
self.gridLayout.addWidget(self.userlineEdit, 0, 1, 1, 1)
self.userLabel = QtWidgets.QLabel(self.gridLayoutWidget)
self.userLabel.setObjectName("userLabel")
self.gridLayout.addWidget(self.userLabel, 0, 0, 1, 1)
self.labelTip = QtWidgets.QLabel(self.gridLayoutWidget)
self.labelTip.setObjectName("labelTip")
self.gridLayout.addWidget(self.labelTip, 3, 1, 1, 1)
self.pwdlineEdit = QtWidgets.QLineEdit(self.gridLayoutWidget)
self.pwdlineEdit.setObjectName("pwdlineEdit")
self.gridLayout.addWidget(self.pwdlineEdit, 1, 1, 1, 1)
self.pwdlabel = QtWidgets.QLabel(self.gridLayoutWidget)
self.pwdlabel.setObjectName("pwdlabel")
self.gridLayout.addWidget(self.pwdlabel, 1, 0, 1, 1)
self.comboBox = QtWidgets.QComboBox(self.gridLayoutWidget)
self.comboBox.setObjectName("comboBox")
self.comboBox.addItem("")
self.comboBox.addItem("")
self.comboBox.addItem("")
self.comboBox.addItem("")
self.gridLayout.addWidget(self.comboBox, 2, 1, 1, 1)
self.label = QtWidgets.QLabel(self.gridLayoutWidget)
self.label.setObjectName("label")
self.gridLayout.addWidget(self.label, 2, 0, 1, 1)
self.label_2 = QtWidgets.QLabel(login_Ui)
self.label_2.setGeometry(QtCore.QRect(-10, 0, 601, 321))
self.label_2.setText("")
self.label_2.setObjectName("label_2")
self.retranslateUi(login_Ui)
QtCore.QMetaObject.connectSlotsByName(login_Ui)
def retranslateUi(self, login_Ui):
_translate = QtCore.QCoreApplication.translate
login_Ui.setWindowTitle(_translate("login_Ui", "Form"))
self.loginButton.setText(_translate("login_Ui", "登 陆"))
self.registerButton.setText(_translate("login_Ui", "注 册"))
self.pushButton.setText(_translate("login_Ui", "找回密码"))
self.userLabel.setText(_translate("login_Ui", " 账 户"))
self.labelTip.setText(_translate("login_Ui", "密码或用户名错误"))
self.pwdlabel.setText(_translate("login_Ui", " 密 码"))
self.comboBox.setItemText(0, _translate("login_Ui", "财务管理员"))
self.comboBox.setItemText(1, _translate("login_Ui", "信息管理员"))
self.comboBox.setItemText(2, _translate("login_Ui", "停车场管理员"))
self.comboBox.setItemText(3, _translate("login_Ui", "超级管理员"))
self.label.setText(_translate("login_Ui", " 请选择"))
具体代码：pyqt5实现登录界面
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