Qt编写控件属性设计器8-网络采集

void frmData::initServer()
{
    //实例化串口类,绑定信号槽
    com = new QextSerialPort(QextSerialPort::EventDriven, this);
    connect(com, SIGNAL(readyRead()), this, SLOT(readDataCom()));

    //实例化网络通信客户端类,绑定信号槽
    tcpClient = new QTcpSocket(this);
    connect(tcpClient, SIGNAL(readyRead()), this, SLOT(readDataClient()));

    //实例化网络通信服务端类,绑定信号槽
    tcpSocket = NULL;
    tcpServer = new QTcpServer(this);
    connect(tcpServer, SIGNAL(newConnection()), this, SLOT(newConnection()));

    //开启定时器读取数据库采集数据
    timer = new QTimer(this);
    connect(timer, SIGNAL(timeout()), this, SLOT(readDataDb()));
    timer->setInterval(1000);
}

void frmData::on_btnOpenTcpClient_clicked()
{
    if (ui->btnOpenTcpClient->text() == "连接") {
        tcpClient->connectToHost(App::TcpServerIP, App::TcpServerPort);
        bool ok = tcpClient->waitForConnected(1000);
        if (ok) {
            setEnable(ui->btnOpenTcpClient, false);
            ui->btnOpenTcpClient->setText("断开");
        }
    } else {
        tcpClient->disconnectFromHost();
        setEnable(ui->btnOpenTcpClient, true);
        ui->btnOpenTcpClient->setText("连接");
    }
}

void frmData::on_btnOpenTcpServer_clicked()
{
    if (ui->btnOpenTcpServer->text() == "监听") {
#if (QT_VERSION > QT_VERSION_CHECK(5,0,0))
        bool ok = tcpServer->listen(QHostAddress::AnyIPv4, App::TcpListenPort);
#else
        bool ok = tcpServer->listen(QHostAddress::Any, App::TcpListenPort);
#endif
        if (ok) {
            setEnable(ui->btnOpenTcpServer, false);
            ui->btnOpenTcpServer->setText("停止");
        }
    } else {
        if (tcpSocket != NULL) {
            tcpSocket->disconnectFromHost();
        }

        tcpSocket = NULL;
        tcpServer->close();
        setEnable(ui->btnOpenTcpServer, true);
        ui->btnOpenTcpServer->setText("监听");
    }
}

void frmData::readDataClient()
{
    QByteArray data = tcpClient->readAll();
    if (data.length() <= 0) {
        return;
    }

    //默认取第一个字节解析,可以自行更改
    quint8 value = data.at(0);
    ui->txtValue->setText(QString::number(value));
    append(3, data.toHex());
}

void frmData::readDataServer()
{
    QByteArray data = tcpSocket->readAll();
    if (data.length() <= 0) {
        return;
    }

    //默认取第一个字节解析,可以自行更改
    quint8 value = data.at(0);
    ui->txtValue->setText(QString::number(value));
    append(3, data.toHex());
}

void frmData::newConnection()
{
    while(tcpServer->hasPendingConnections()) {
        if (tcpSocket != NULL) {
            tcpSocket->disconnectFromHost();
        }

        tcpSocket = tcpServer->nextPendingConnection();
        connect(tcpSocket, SIGNAL(readyRead()), this, SLOT(readDataServer()));
    }
}