kejingfan/Integrated_Practice_of_IoT_System-CardManageSystem
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重构了连接数据库、设置设备名的代码，封装为类

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Jingfan Ke
2024-07-29 00:37:14 +08:00
parent 1a300f4ca7
commit 6cca0535bc
6 changed files with 162 additions and 32 deletions
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45
settingPage.h
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@@ -63,43 +63,38 @@ void MainWindow::on_connectReaderButton_clicked()
*/
void MainWindow::on_connectDatabaseButton_clicked()
{
databaseIpAddr = ui->ipAddrEdit->text();
databasePort = ui->portBox->value();
databasePassword = ui->passwordEdit->text();
if (db == nullptr)
{
db = new Database(QSqlDatabase::addDatabase("QMYSQL"), ui->ipAddrEdit->text(), ui->portBox->value(), ui->passwordEdit->text());
}
else
{
db->setHostName(ui->ipAddrEdit->text());
db->setPort(ui->portBox->value());
db->setPassword(ui->passwordEdit->text());
}
db = QSqlDatabase::addDatabase("QMYSQL");
db.setHostName(databaseIpAddr);
db.setPort(databasePort);
db.setPassword(databasePassword);
db.setDatabaseName("cardManageSystem");
db.setUserName("cardManageSystem");
if (!db.open())
if (!db->open())
{
QMessageBox::warning(this, QString("数据库状态提示"), QString("数据库连接失败，请重试。"));
databaseConnectStatusCheckBox->setChecked(false);
databaseLabel->setText(QString("数据库未连接"));
databaseIpAddr = "";
return;
}
databaseConnectStatusCheckBox->setChecked(true);
databaseLabel->setText(QString("数据库已连接：") + databaseIpAddr + QString(":") + QString::number(databasePort));
databaseLabel->setText(QString("数据库已连接：") + db->getHostName() + QString(":") + QString::number(db->getPort()));
device = ui->deviceEdit->text();
QSqlQuery query;
QString sql = QString("select * from device where id = '%1';").arg(device);
query.exec(sql);
if (query.next())
device.setDevice(ui->deviceEdit->text(), db);
if (!device.is_connected())
{
if (query.value(2).toBool()) depositAllowed = true;
else depositAllowed = false;
QMessageBox::warning(this, QString("设备名提示"), QString("该设备名无效，请重试。"));
deviceLabel->setText(device.getName());
}
else
{
device = QString("未指定设备名");
QMessageBox::warning(this, QString("设备名提示"), QString("该设备名无效，请重试。"));
if (device.is_depositAllowed()) deviceLabel->setText(device.getName() + QString("（可充值）"));
else deviceLabel->setText(device.getName() + QString("（仅可消费）"));
}
deviceLabel->setText(device);
}
@@ -110,7 +105,9 @@ void MainWindow::on_connectDatabaseButton_clicked()
*/
bool MainWindow::ready()
{
if (!reader.is_connected() || databaseIpAddr.isEmpty()) return false;
if (!reader.is_connected()) return false;
if (db == nullptr || !db->is_connected()) return false;
if (!device.is_connected()) return false;
return true;
}