Qt监控Access数据库

配置文件setup.ini内容

[General]
DBFilePath=C:/Users/WangGang/Desktop/Database1.accdb
DBUserName=
DBPassword=

GameIp=192.168.1.152
GamePort=3000
4DSystemIp=192.168.1.152
4DSystemPort=21392
UdpDataToGame=StartGame
UdpDataTo4DSystem=AS%NPlayDirect%1%

工程文件中QT+=sql

mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QUdpSocket>
#include <QtSql>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();

    void connectDB();

    void sendUdpData();
private slots:
    void on_pushButton_clicked();

    void queryDB();

    void readUdpData();

private:
    Ui::MainWindow *ui;
    QTimer* queryTimer;//监测数据库定时器

    QUdpSocket* udpSocket;

    QSqlDatabase db;
    QString DBFilePath;//数据库文件路径
    QString DBUserName;//数据库用户名
    QString DBPassword;//数据库密码
    QString GameIp;//游戏主机IP
    quint16 GamePort;//游戏UDP绑定的端口
    QString FourDSystemIp;//4D系统IP
    quint16 FourDSystemPort;//4D系统UDP绑定的端口
    QString UdpDataToGame;//向游戏发送的UDP数据
    QString UdpDataTo4DSystem;//向4D系统发送的UDP数据
};

#endif // MAINWINDOW_H

mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"

#include <QMessageBox>

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    QString appDirPath = QCoreApplication::applicationDirPath();
    QSettings* configIniRead = new QSettings(appDirPath+"/setup.ini", QSettings::IniFormat);
    configIniRead->setIniCodec(QTextCodec::codecForName("GB2312"));
    if( configIniRead->allKeys().size() > 0 )
    {
        DBFilePath = configIniRead->value("DBFilePath").toString();
        DBUserName = configIniRead->value("DBUserName").toString();
        DBPassword = configIniRead->value("DBPassword").toString();
        GameIp = configIniRead->value("GameIp").toString();
        GamePort = configIniRead->value("GamePort").toUInt();
        qDebug()<<GameIp<<GamePort;
        FourDSystemIp = configIniRead->value("4DSystemIp").toString();
        FourDSystemPort = configIniRead->value("4DSystemPort").toUInt();
        UdpDataToGame = configIniRead->value("UdpDataToGame").toString();
        UdpDataTo4DSystem = configIniRead->value("UdpDataTo4DSystem").toString();
        qDebug()<<"DBFilePath:"<<DBFilePath;
        qDebug()<<"DBUserName:"<<DBUserName;
    }
    else
    {
        qDebug() << "have no setup.ini , use default setting ." ;
    }

    connectDB();

    udpSocket = new QUdpSocket(this);
    connect( udpSocket, SIGNAL(readyRead()), SLOT(readUdpData()) );

    queryTimer = new QTimer(this);
    //connect( queryTimer, SIGNAL(timeout()), SLOT(queryDB()) );
    queryTimer->start();

}

MainWindow::~MainWindow()
{
    delete ui;
    db.close();
}


//创建数据库连接
void MainWindow::connectDB()
{
    QString sDbNm = DBFilePath;//数据库文件
    db = QSqlDatabase::addDatabase("QODBC");//设置数据库驱动
    QString dsn = QString("DRIVER={Microsoft Access Driver (*.mdb, *.accdb)}; FIL={MS Access};DBQ=%1;").arg(sDbNm);//连接字符串
    db.setDatabaseName(dsn);//设置连接字符串
    db.setUserName(DBUserName);//设置登陆数据库的用户名
    db.setPassword(DBPassword);//设置密码
    bool ok = db.open();
    if (!ok) {
        QMessageBox messageBox;
        messageBox.setText("Database error");
        messageBox.exec();
        db.close();
    }
}
//查询数据库数据
void MainWindow::queryDB()
{
    QSqlQuery query;
    query.prepare("select * from t1");
    query.exec();
    while (query.next())
    {
        qDebug()<<query.value(1).toString();
        //udpSocket->writeDatagram(data, sender, senderPort);
    }
    query.clear();
}

void MainWindow::sendUdpData()
{
    udpSocket->writeDatagram(UdpDataToGame.toStdString().data(), QHostAddress(GameIp), GamePort);
    //qDebug()<<GameIp<<GamePort;
    udpSocket->writeDatagram(UdpDataTo4DSystem.toStdString().data(), QHostAddress(FourDSystemIp), FourDSystemPort);
}

void MainWindow::readUdpData()
{
    QByteArray data;
    QHostAddress sender;
    quint16 senderPort = 0;

    while ( udpSocket->hasPendingDatagrams() )
    {
        data.resize( udpSocket->pendingDatagramSize() );
        udpSocket->readDatagram( data.data(), data.size(), &sender, &senderPort );
//        DECLARE_DATA_READER(data, command);
//        switch ( command )
//        {
//        case COMMAND_START_APP: onCmdStartApp(sender, senderPort, dataStream);break;
//        case COMMAND_STOP_APP: onCmdStopApp(sender, senderPort, dataStream);break;
//        case COMMAND_START_GAME: onCmdStartGame(sender, senderPort, dataStream);break;
//        case COMMAND_PULSE: onCmdPulse(sender, senderPort, dataStream);break;
//        case COMMAND_SHUTDOWN: onCmdShutdown(sender, senderPort, dataStream);break;
//        default: break;
//        }
    }
}

void MainWindow::on_pushButton_clicked()
{
    queryDB();
    sendUdpData();
}