一、环境搭建
参考上一章环境
二、项目工程目次

三、主要源步伐如下:
registeraccountwindow.cpp
窗口初始化:
- void registeraccountWindow::reginit()
- {
- //去掉?号
- this->setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
- //更改名称
- this->setWindowTitle("register");
- //更换左上角图标
- this->setWindowIcon(QIcon(":/image/logol.png"));//生成窗口图标
- //禁止改变窗口大小 固定大小
- this->setFixedSize(408,270);
- //设置样式
- ui->lineEdit_registeraccount->setStyleSheet("QLineEdit{border-width:1px;border-radius:4px;font-size:12px;color:black;border:1px solid gray;}"
- "QLineEdit:hover{border-width:1px;border-radius:4px;font-size:16px;color:black;border:1px solid rgb(204,38,200);}");//边框宽度 边框圆角 字体大小 ... 选中边框颜色
- ui->lineEdit_registerpassword->setStyleSheet("QLineEdit{border-width:1px;border-radius:4px;font-size:12px;color:black;border:1px solid gray;}"
- "QLineEdit:hover{border-width:1px;border-radius:4px;font-size:12px;color:black;border:1px solid rgb(70,200,50);}");
- ui->lineEdit_regosterpassword_ok->setStyleSheet("QLineEdit{border-width:1px;border-radius:4px;font-size:12px;color:black;border:1px solid gray;}"
- "QLineEdit:hover{border-width:1px;border-radius:4px;font-size:12px;color:black;border:1px solid rgb(0,18,154);}");
- //设置密码框-密文登录
- ui->lineEdit_registerpassword->setEchoMode(QLineEdit::Password);
- ui->lineEdit_regosterpassword_ok->setEchoMode(QLineEdit::Password);
- //密码的隐藏和显示
- // 设置样式表(图片为眼睛样式)
- ui->checkBox_eye1->setStyleSheet("QCheckBox {spacing: 5px;border: none;background-color: transparent;}"
- "QCheckBox::indicator {width: 20px;height: 20px;border: none;image: url(:/image/close_eye.png);}"
- "QCheckBox::indicator:checked {image: url(:/image/open_eye.png);}");
- ui->checkBox_eye2->setStyleSheet("QCheckBox {spacing: 5px;border: none;background-color: transparent;}"
- "QCheckBox::indicator {width: 20px;height: 20px;border: none;image: url(:/image/close_eye.png);}"
- "QCheckBox::indicator:checked {image: url(:/image/open_eye.png);}");
- //提示信息
- ui->lineEdit_registeraccount->setPlaceholderText("请输入设置的用户名 格式10位以内的数字");
- ui->lineEdit_registerpassword->setPlaceholderText("请输入设置的密码 格式15位以内的数字") ;
- ui->lineEdit_regosterpassword_ok->setPlaceholderText("请再次输入设置的密码 格式15位以内的数字");
- ui->lineEdit_checkcode->setPlaceholderText("请输入验证码");
- //返回主界面按钮样式 背景透明等
- ui->pushButton_back->setStyleSheet("QPushButton {"
- " background-color: transparent;"
- " border: none;"
- " color:rgb(255, 255, 255)"
- "}"
- "QPushButton:hover{color:rgb(15, 23, 253)}"
- "QPushButton:pressed{color:rgb(255, 44, 221)}"
- );
- //验证码按键样式
- ui->pushButton_checkcode->setStyleSheet("QPushButton {"
- " background-color: transparent;"
- " border: none;"
- "}"
- "QPushButton:pressed { background-color: none; }" // 移除按键被按下时的视觉效果
- "QPushButton:hover { background-color: none; }" // 移除鼠标悬停时的视觉效果
- );
- //获取验证码
- m_captcha = getCaptcha();
- //生成随机颜色
- m_color = generateRandomColor();
- }
复制代码 返回登录页面:
- void registeraccountWindow::on_pushButton_back_clicked()
- {
- this->close();
- lo->show();
- }
复制代码 注册按钮及其相关函数:
- void registeraccountWindow::on_pushButton_register_clicked()
- {
- lo->connent_mysql();
- //获取内容
- QString reg_account = ui->lineEdit_registeraccount->text();
- QString reg_password = ui->lineEdit_registerpassword->text();
- QString reg_password_ok = ui->lineEdit_regosterpassword_ok->text();
- QString check_code = ui->lineEdit_checkcode->text().replace(" "," ");//去除空格
- QSqlQuery query;
- //查询数据库的所有账户 避免重复
- QString qs_temp = QString("select * from os_user where account = '%1'").arg(reg_account);
- // qDebug() << query.next();
- query.exec(qs_temp);
- if(query.next()){ //获取查询结果集
- QMessageBox::information(this,"注册","账号已经被注册");
- }
- else
- {
- if(reg_password_ok==reg_password) //两次输入的密码一致
- {
- if(check_code.toLower() == m_captcha.toLower()) //用户输入的验证码与生成的验证码比较
- {
- QString qs = QString("insert into os_user(account,pwd)"
- "values(%1, %2)"
- ).arg(reg_account).arg(reg_password);
- if(!query.exec(qs)){ //获取查询结果集
- QMessageBox::information(this,"注册","注册失败");
- }
- else
- {
- QMessageBox::information(this,"注册","注册成功");
- }
- }
- else
- {
- QMessageBox::warning(this, "Warning", "验证码输入错误");
- }
- }
- else
- {
- QMessageBox::warning(this, "Warning", "两次输入的密码不一致");
- }
- }
- }
- QColor registeraccountWindow::generateRandomColor()
- {
- int red = QRandomGenerator::global()->bounded(256);
- // 生成0到255之间的随机整数作为红色通道的值
- int green = QRandomGenerator::global()->bounded(256);
- // 生成0到255之间的随机整数作为绿色通道的值
- int blue = QRandomGenerator::global()->bounded(256);
- // 生成0到255之间的随机整数作为蓝色通道的值
- return QColor(red, green, blue);
- // 使用生成的RGB值创建并返回一个QColor对象
- }
- void registeraccountWindow::paintEvent(QPaintEvent *event)
- {
- QPainter painter(this);//直接绘制在该窗口上
- // 填充背景为白色
- painter.fillRect(ui->label_checkcode->x()+ui->widget->x(), ui->label_checkcode->y()+ui->widget->y(), ui->label_checkcode->width(), ui->label_checkcode->height(), Qt::white);
- // 设置字体样式
- painter.setFont(QFont("Lucida Console", 18,QFont::Bold));
- // 绘制验证码字符
- for(int i = 0; i < 4; i++)
- {
- QColor color = generateRandomColor();
- // 生成随机颜色
- QPen pen(color);
- pen.setWidth(1); //画笔宽度
- painter.setPen(pen);//相当于将画笔交给画家
- painter.drawText(ui->label_checkcode->x() +ui->widget->x()+ 30*i, ui->label_checkcode->y()+ui->widget->y(), 30, ui->label_checkcode->height(), Qt::AlignCenter,
- QString(m_captcha[i]));//1,2,3,4绘制文本的矩形区域 文本的对齐方式 文本内容
- // 绘制验证码字符
- }
- // 绘制噪点
- for(int i=0; i<1500; i++)
- {
- QColor color = generateRandomColor();
- // 生成随机颜色
- QPen pen(color);
- pen.setWidth(1);
- painter.setPen(pen);
- painter.drawPoint(ui->label_checkcode->x()+ui->widget->x()+ (qrand() % ui->label_checkcode->width()), ui->label_checkcode->y()+ui->widget->y() + (qrand() % ui->label_checkcode->height()));
- //保证随机数的坐标在矩形区域内
- }
- // // 绘制干扰线
- // for(int i = 0;i < 10;++i)
- // {
- // painter.drawLine(ui->label_checkcode->x()+ui->widget->x()+qrand()%ui->label_checkcode->width(),ui->label_checkcode->y()+ui->widget->y()+qrand()%ui->label_checkcode->height(),
- // ui->label_checkcode->x()+ui->widget->x()+qrand()%ui->label_checkcode->width(),ui->label_checkcode->y()+ui->widget->y()+qrand()%ui->label_checkcode->height());
- // }
- }
- QString registeraccountWindow::getCaptcha()
- {
- const QString possibleCharacters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
- const int captchaLength = 4;
- QString result = "";
- // 生成验证码字符串
- for (int i = 0; i < captchaLength; ++i) { //控制生成4位的字符串
- int index = QRandomGenerator::global()->bounded(possibleCharacters.length()); //QRandomGenerator随机数生成器 QRandomGenerator::global()指针变量 返回创建的随机数指针 bounded(给定随机数生成的范围)
- // 生成一个0到possibleCharacters长度之间的随机整数
- result.append(possibleCharacters.at(index));
- // 将随机位置的字符添加到结果字符串中
- }
- return result; // 返回生成的验证码字符串
- }
复制代码 registeraccontwindow.h
- #ifndef REGISTERACCOUNTWINDOW_H
- #define REGISTERACCOUNTWINDOW_H
- #include "login.h"
- #include <QDialog>
- namespace Ui {
- class registeraccountWindow;
- }
- class registeraccountWindow : public QDialog
- {
- Q_OBJECT
- public:
- explicit registeraccountWindow(QWidget *parent = nullptr);
- ~registeraccountWindow();
- QString m_captcha;
- QColor m_color;
- login *lo = new login;
- void reginit();
- void paintEvent(QPaintEvent *event);
- QColor generateRandomColor();
- QString getCaptcha();
- private slots:
- void on_pushButton_back_clicked();
- void on_pushButton_register_clicked();
- void on_pushButton_checkcode_clicked();
- void on_checkBox_eye1_stateChanged(int arg1);
- void on_checkBox_eye2_stateChanged(int arg1);
- private:
- Ui::registeraccountWindow *ui;
- };
- #endif // REGISTERACCOUNTWINDOW_H
复制代码 forgetpasswordwindow.cpp
修改暗码功能:
- void forgetpasswordwindow::on_pushButton_forget_clicked()
- {
- lo_forget->connent_mysql();
- //获取内容
- QString forget_account = ui->lineEdit_forgetaccount->text();
- QString forget_password = ui->lineEdit_forgetpassword->text();
- QSqlQuery query;
- //查询数据库的所有账户 是否有该账号
- QString qs = QString("select * from os_user where account = '%1'").arg(forget_account);
- query.exec(qs);//执行SQL语句
- if(query.next()){ //获取查询结果集
- QString qs = QString("UPDATE os_user SET pwd = '%1' WHERE account = '%2'" ).arg(forget_password).arg(forget_account);
- query.exec(qs);//执行SQL语句
- if(!query.exec(qs))
- {
- QMessageBox::information(this,"修改","修改密码失败");
- }
- else
- QMessageBox::information(this,"修改","修改密码成功");
- }
- else
- {
- QMessageBox::information(this,"修改","该账号不存在");
- }
- }
复制代码 四、实现结果
注意:点击验证码的位置即可刷新验证码
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