PyQT5一起学做图书管理系统(3)注册页面

注册页面

环境

系统:windows10系统
编辑器:Sublime3
编程语言:python3+pyqt5

前言

在准备这一节前,得保证上一节得数据库操作已经成功了,这样才能顺顺利利得完成注册页面的设计。

注册页面逻辑

针对注册页面,其实也很简单,在显示界面有用户名,密码,注册按钮,这就够了
针对逻辑层面,在点击注册的时候,检查一下当前账号存在不,同时检查用户名是否规范,密码是否合理

这就是预想中的界面,同时也是最后的成品

PyQT5一起学做图书管理系统(3)注册页面_第1张图片

界面设计

对于界面设计,可以使用QTCreator通过拖拽的方式来实现,然后再转换为python代码
也可以全部直接写代码来实现,本文中全部是代码方式。
UI界面很简洁:

正中间一个Lable输入标识
四个Lable,四个输入框来输入注册信息
一个注册按钮

  def setUpUI(self):
        font = QFont()                                              #固定字体变量
        font.setPixelSize(18)                                       #字体设置为18pix
        lineEditFont = QFont()                                      #输入框字体变量
        lineEditFont.setPixelSize(16)                               #输入框字体大小设置为16pix
        
        self.layout = QVBoxLayout()                                 #定义纵向布局
        self.setLayout(self.layout)                                 #设置整体得布局,将纵向布局设置为整体布局

        
        self.signUpLabel = QLabel("注   册")                        #注册标签
        #self.signUpLabel.setFixedWidth(200)
        self.signUpLabel.setFixedHeight(100)                        #设置高度
        self.signUpLabel.setAlignment(Qt.AlignCenter)               #居中显示
        self.signUpLabel.setFont(font)                              #将字体适应到QLabel
        self.layout.addWidget(self.signUpLabel, Qt.AlignHCenter)    #将控件放入到纵向布局中,居中显示
        

        # 表单,包括学号,姓名,密码,确认密码
        self.formlayout = QFormLayout()                             #学号,姓名,密码,确认密码按钮都放入QFormLayout布局中

        # Row1
        self.userIdLabel = QLabel("账    号: ")                 #学号控件
        self.userIdLabel.setFont(font)                          #设置字体
        self.userIdLineEdit = QLineEdit()                       #输入框
        self.userIdLineEdit.setFixedWidth(180)                  #设置输入框宽度
        self.userIdLineEdit.setFixedHeight(32)                  #设置输入框高度
        self.userIdLineEdit.setFont(lineEditFont)               #设置输入框字体
        self.userIdLineEdit.setMaxLength(10)                    #设置输入框最大长度限制
        self.formlayout.addRow(self.userIdLabel, self.userIdLineEdit)  #打包添加到QFormLayout布局中,一行只能是两个控件

        # Row2
        self.userNameLabel = QLabel("姓    名: ")
        self.userNameLabel.setFont(font)
        self.userNameLineEdit = QLineEdit()
        self.userNameLineEdit.setFixedHeight(32)
        self.userNameLineEdit.setFixedWidth(180)
        self.userNameLineEdit.setFont(lineEditFont)
        self.userNameLineEdit.setMaxLength(10)
        self.formlayout.addRow(self.userNameLabel, self.userNameLineEdit)



        # Row3
        self.passwordLabel = QLabel("密    码: ")
        self.passwordLabel.setFont(font)
        self.passwordLineEdit = QLineEdit()
        self.passwordLineEdit.setFixedWidth(180)
        self.passwordLineEdit.setFixedHeight(32)
        self.passwordLineEdit.setFont(lineEditFont)
        #self.passwordLineEdit.setEchoMode(QLineEdit.Password)                  #QLineEdit.Password输入字符后就立马显示为星号
        self.passwordLineEdit.setEchoMode(QLineEdit.PasswordEchoOnEdit)         #QLineEdit.PasswordEchoOnEdit为输入时为字符,失去焦点为星号
        self.passwordLineEdit.setMaxLength(16)
        self.formlayout.addRow(self.passwordLabel, self.passwordLineEdit)

        # Row4
        self.passwordConfirmLabel = QLabel("确认密码: ")
        self.passwordConfirmLabel.setFont(font)
        self.passwordConfirmLineEdit = QLineEdit()
        self.passwordConfirmLineEdit.setFixedWidth(180)
        self.passwordConfirmLineEdit.setFixedHeight(32)
        self.passwordConfirmLineEdit.setFont(lineEditFont)
        #self.passwordConfirmLineEdit.setEchoMode(QLineEdit.Password)           #QLineEdit.Password输入字符后就立马显示为星号
        self.passwordConfirmLineEdit.setEchoMode(QLineEdit.PasswordEchoOnEdit)  #QLineEdit.PasswordEchoOnEdit为输入时为字符,失去焦点为星号
        self.passwordConfirmLineEdit.setMaxLength(16)
        self.formlayout.addRow(self.passwordConfirmLabel, self.passwordConfirmLineEdit)

        # Row5
        self.signUpbutton = QPushButton("注 册")
        self.signUpbutton.setFixedWidth(120)
        self.signUpbutton.setFixedHeight(30)
        self.signUpbutton.setFont(font)
        self.formlayout.addRow("", self.signUpbutton)                   #第一个位置置空


        widget = QWidget()
        widget.setLayout(self.formlayout)                               #将formlayout 表格布局放入控件中
        widget.setFixedHeight(250)
        widget.setFixedWidth(300)

        self.Hlayout = QHBoxLayout()
        self.Hlayout.addWidget(widget, Qt.AlignCenter)                  #将控件放入QHBoxLayout 横向布局中

        widget = QWidget()
        widget.setLayout(self.Hlayout)                                  #将 QHBoxLayout 横向布局放入控件中
        
        self.layout.addWidget(widget, Qt.AlignHCenter)                  #将控件放入 整体的这个纵向布局中

        # 设置验证
        reg = QRegExp("user[0~9]{8}")                                     #设置输入匹配规则,PB开头,后面加8位数字
        pValidator = QRegExpValidator(self)
        pValidator.setRegExp(reg)
        self.userIdLineEdit.setValidator(pValidator)                 #将匹配规则关联到输入框

        reg = QRegExp("[a-zA-z0-9]+$")                                  #设置输入匹配规则,由数字和26个英文字母组成的字符串
        pValidator.setRegExp(reg)
        self.passwordLineEdit.setValidator(pValidator)
        self.passwordConfirmLineEdit.setValidator(pValidator)

初始化程序

程序初始化时,加载数据库,加载UI界面

    def __init__(self):
        super().__init__()
        self.resize(900, 600)
        self.setWindowTitle("欢迎登陆图书馆管理系统")
        self.setUpUI()
        self.userdb=UserDbManager()

注册事件

当点击注册按钮时,通过信号触发注册函数,调用注册事件

  def SignUp(self):

        #获取输入内容
        userId       = self.userIdLineEdit.text()
        userName     = self.userNameLineEdit.text()
        password        = self.passwordLineEdit.text()
        confirmPassword = self.passwordConfirmLineEdit.text()

        #表单为空的检测
        if (userId == "" or userName == "" or password == "" or confirmPassword == ""):
            print(QMessageBox.warning(self, "警告", "表单不可为空,请重新输入", QMessageBox.Yes, QMessageBox.Yes))
            return
        else:    # 需要处理逻辑,1.账号已存在;2.密码不匹配;3.插入user表                                     
            if (confirmPassword != password):                                       #两次密码不匹配,直接返回
                #print(QMessageBox.warning(self, "警告", "两次输入密码不一致,请重新输入", QMessageBox.Yes, QMessageBox.Yes))
                QMessageBox.warning(self, "警告", "两次输入密码不一致,请重新输入", QMessageBox.Yes, QMessageBox.Yes)
                return
            elif (confirmPassword == password):                                     #两次密码一致               
                # md5编码
                hl = hashlib.md5()                                                  #将密码进行md5加密
                hl.update(password.encode(encoding='utf-8'))
                md5password = hl.hexdigest()

                userdata=self.userdb.querybyUserid(userId)      #根据用户ID查询数据库是否存在密码  
                                                           
                if (userdata):                                                  #结果集合一般从0开始,所以next()有内容,便可以判定查询到了内容
                    #账号已经存在,弹出警告
                    QMessageBox.warning(self, "警告", "该账号已存在,请重新输入", QMessageBox.Yes, QMessageBox.Yes)
                    return
                else:                                                               #插入新账号数据
                    self.userdb.addUser(userId,userName,md5password)
                    if self.userdb.querybyUserid(userId):
                        QMessageBox.information(self, "提醒", "您已成功注册账号!", QMessageBox.Yes, QMessageBox.Yes)
                        self.student_signup_signal.emit(userId)
                    else:
                        QMessageBox.warning(self, "警告", "账号注册失败,请重新注册", QMessageBox.Yes, QMessageBox.Yes)
                return

本文可单独运行,如果想应用到其他程序上,只需将注册函数中的数据库语句稍作修改即可

 

完整程序:

SignUp.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Date    : 2018-12-05 21:35:52
# @Author  : Jimy_Fengqi ([email protected])
# @Link    : https://blog.csdn.net/qiqiyingse/

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import qdarkstyle
from PyQt5.QtSql import *
import hashlib
from db.userInfoManager import UserDbManager
import images          #这是本地资源包,加载的图片资源,找不到可以把相关图片资源删除
class SignUpWidget(QWidget):
    student_signup_signal = pyqtSignal(str)                        #接受信号

    def __init__(self):
        super().__init__()
        self.resize(900, 600)
        self.setWindowTitle("欢迎登陆图书馆管理系统")
        self.setUpUI()
        self.userdb=UserDbManager()

    def setUpUI(self):

        font = QFont()                                              #固定字体变量
        font.setPixelSize(18)                                       #字体设置为18pix
        lineEditFont = QFont()                                      #输入框字体变量
        lineEditFont.setPixelSize(16)                               #输入框字体大小设置为16pix
        
        self.layout = QVBoxLayout()                                 #定义纵向布局
        self.setLayout(self.layout)                                 #设置整体得布局,将纵向布局设置为整体布局

        
        self.signUpLabel = QLabel("注   册")                        #注册标签
        #self.signUpLabel.setFixedWidth(200)
        self.signUpLabel.setFixedHeight(100)                        #设置高度
        self.signUpLabel.setAlignment(Qt.AlignCenter)               #居中显示
        self.signUpLabel.setFont(font)                              #将字体适应到QLabel
        self.layout.addWidget(self.signUpLabel, Qt.AlignHCenter)    #将控件放入到纵向布局中,居中显示
        

        # 表单,包括学号,姓名,密码,确认密码
        self.formlayout = QFormLayout()                             #学号,姓名,密码,确认密码按钮都放入QFormLayout布局中

        # Row1
        self.userIdLabel = QLabel("账    号: ")                 #学号控件
        self.userIdLabel.setFont(font)                          #设置字体
        self.userIdLineEdit = QLineEdit()                       #输入框
        self.userIdLineEdit.setFixedWidth(180)                  #设置输入框宽度
        self.userIdLineEdit.setFixedHeight(32)                  #设置输入框高度
        self.userIdLineEdit.setFont(lineEditFont)               #设置输入框字体
        self.userIdLineEdit.setMaxLength(10)                    #设置输入框最大长度限制
        self.formlayout.addRow(self.userIdLabel, self.userIdLineEdit)  #打包添加到QFormLayout布局中,一行只能是两个控件

        # Row2
        self.userNameLabel = QLabel("姓    名: ")
        self.userNameLabel.setFont(font)
        self.userNameLineEdit = QLineEdit()
        self.userNameLineEdit.setFixedHeight(32)
        self.userNameLineEdit.setFixedWidth(180)
        self.userNameLineEdit.setFont(lineEditFont)
        self.userNameLineEdit.setMaxLength(10)
        self.formlayout.addRow(self.userNameLabel, self.userNameLineEdit)


        # Row3
        self.passwordLabel = QLabel("密    码: ")
        self.passwordLabel.setFont(font)
        self.passwordLineEdit = QLineEdit()
        self.passwordLineEdit.setFixedWidth(180)
        self.passwordLineEdit.setFixedHeight(32)
        self.passwordLineEdit.setFont(lineEditFont)
        #self.passwordLineEdit.setEchoMode(QLineEdit.Password)                  #QLineEdit.Password输入字符后就立马显示为星号
        self.passwordLineEdit.setEchoMode(QLineEdit.PasswordEchoOnEdit)         #QLineEdit.PasswordEchoOnEdit为输入时为字符,失去焦点为星号
        self.passwordLineEdit.setMaxLength(16)
        self.formlayout.addRow(self.passwordLabel, self.passwordLineEdit)

        # Row4
        self.passwordConfirmLabel = QLabel("确认密码: ")
        self.passwordConfirmLabel.setFont(font)
        self.passwordConfirmLineEdit = QLineEdit()
        self.passwordConfirmLineEdit.setFixedWidth(180)
        self.passwordConfirmLineEdit.setFixedHeight(32)
        self.passwordConfirmLineEdit.setFont(lineEditFont)
        #self.passwordConfirmLineEdit.setEchoMode(QLineEdit.Password)           #QLineEdit.Password输入字符后就立马显示为星号
        self.passwordConfirmLineEdit.setEchoMode(QLineEdit.PasswordEchoOnEdit)  #QLineEdit.PasswordEchoOnEdit为输入时为字符,失去焦点为星号
        self.passwordConfirmLineEdit.setMaxLength(16)
        self.formlayout.addRow(self.passwordConfirmLabel, self.passwordConfirmLineEdit)

        # Row5
        self.signUpbutton = QPushButton("注 册")
        self.signUpbutton.setFixedWidth(120)
        self.signUpbutton.setFixedHeight(30)
        self.signUpbutton.setFont(font)
        self.formlayout.addRow("", self.signUpbutton)                   #第一个位置置空


        widget = QWidget()
        widget.setLayout(self.formlayout)                               #将formlayout 表格布局放入控件中
        widget.setFixedHeight(250)
        widget.setFixedWidth(300)

        self.Hlayout = QHBoxLayout()
        self.Hlayout.addWidget(widget, Qt.AlignCenter)                  #将控件放入QHBoxLayout 横向布局中

        widget = QWidget()
        widget.setLayout(self.Hlayout)                                  #将 QHBoxLayout 横向布局放入控件中
        
        self.layout.addWidget(widget, Qt.AlignHCenter)                  #将控件放入 整体的这个纵向布局中

        # 设置验证
        reg = QRegExp("user[0~9]{8}")                                     #设置输入匹配规则,PB开头,后面加8位数字
        pValidator = QRegExpValidator(self)
        pValidator.setRegExp(reg)
        self.userIdLineEdit.setValidator(pValidator)                 #将匹配规则关联到输入框

        reg = QRegExp("[a-zA-z0-9]+$")                                  #设置输入匹配规则,由数字和26个英文字母组成的字符串
        pValidator.setRegExp(reg)
        self.passwordLineEdit.setValidator(pValidator)
        self.passwordConfirmLineEdit.setValidator(pValidator)


        self.signUpbutton.clicked.connect(self.SignUp)
        self.userIdLineEdit.returnPressed.connect(self.SignUp)
        self.userNameLineEdit.returnPressed.connect(self.SignUp)
        self.passwordLineEdit.returnPressed.connect(self.SignUp)
        self.passwordConfirmLineEdit.returnPressed.connect(self.SignUp)

    def SignUp(self):

        #获取输入内容
        userId       = self.userIdLineEdit.text()
        userName     = self.userNameLineEdit.text()
        password        = self.passwordLineEdit.text()
        confirmPassword = self.passwordConfirmLineEdit.text()

        #表单为空的检测
        if (userId == "" or userName == "" or password == "" or confirmPassword == ""):
            print(QMessageBox.warning(self, "警告", "表单不可为空,请重新输入", QMessageBox.Yes, QMessageBox.Yes))
            return
        else:    # 需要处理逻辑,1.账号已存在;2.密码不匹配;3.插入user表                                     
            if (confirmPassword != password):                                       #两次密码不匹配,直接返回
                #print(QMessageBox.warning(self, "警告", "两次输入密码不一致,请重新输入", QMessageBox.Yes, QMessageBox.Yes))
                QMessageBox.warning(self, "警告", "两次输入密码不一致,请重新输入", QMessageBox.Yes, QMessageBox.Yes)
                return
            elif (confirmPassword == password):                                     #两次密码一致               
                # md5编码
                hl = hashlib.md5()                                                  #将密码进行md5加密
                hl.update(password.encode(encoding='utf-8'))
                md5password = hl.hexdigest()

                userdata=self.userdb.querybyUserid(userId)      #根据用户ID查询数据库是否存在密码  
                                                           
                if (userdata):                                                  #结果集合一般从0开始,所以next()有内容,便可以判定查询到了内容
                    #账号已经存在,弹出警告
                    QMessageBox.warning(self, "警告", "该账号已存在,请重新输入", QMessageBox.Yes, QMessageBox.Yes)
                    return
                else:                                                               #插入新账号数据
                    self.userdb.addUser(userId,userName,md5password)
                    if self.userdb.querybyUserid(userId):
                        QMessageBox.information(self, "提醒", "您已成功注册账号!", QMessageBox.Yes, QMessageBox.Yes)
                        self.student_signup_signal.emit(userId)
                    else:
                        QMessageBox.warning(self, "警告", "账号注册失败,请重新注册", QMessageBox.Yes, QMessageBox.Yes)
                return


if __name__ == "__main__":
    app = QApplication(sys.argv)
    app.setWindowIcon(QIcon(":/images/MainWindow_1.png"))
    app.setStyleSheet(qdarkstyle.load_stylesheet_pyqt5())
    mainMindow = SignUpWidget()
    mainMindow.show()
    sys.exit(app.exec_())

 

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