QTcpSocket

一、

二、

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QTcpServer>
#include <QTcpSocket>
QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr);
    ~MainWindow();
private slots:
    void slotNewConnection();
    void slotReadyRead();
    void on_btn_listen_clicked();

    void on_btn_close_clicked();

    void on_btn_send_clicked();

    void on_btn_open_lock_clicked();

    void on_btn_clean_clicked();

private:
    Ui::MainWindow *ui;
private:
    uint8_t mac_addr[6];
    QTcpServer *tcp_server_;
    QTcpSocket *tcp_socket_;
    void init();
    void send(const QByteArray &ba);
    void showMsg(bool isSend,const QByteArray &ba);
    void showMsg(const QString &msg);
};
#endif // MAINWINDOW_H

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QDateTime>
#include <QDebug>
MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    ui->le_port->setText("8080");

    init();
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::slotNewConnection()
{
    showMsg("设备连接进来");
    tcp_socket_ = tcp_server_->nextPendingConnection(); //获取已经连接的客户端套接字
    connect(tcp_socket_,SIGNAL(readyRead()),this,SLOT(slotReadyRead()));
}

void MainWindow::slotReadyRead()
{

    QByteArray data=tcp_socket_->readAll();
    //qDebug()<<data.toHex();

    showMsg(false,data);


    QString rec=data.toHex();
    QString mark_str="";

    QString data1=rec.mid(2,2);
    if(data1.toInt(nullptr,16)==0xB4)
    {
       QString mac_addr=rec.mid(4,12);
       QString mac_temp="";
       for(int i=0;i<6;i++)
       {
          mac_temp+=mac_addr.mid(i*2,2)+" ";

       }
        mark_str="B4设备状态上报 ";
        mark_str+=" mac addr:"+mac_temp;
        mark_str+=" 低电报警:"+rec.mid(16,2);
        mark_str+=" 开关状态(00关锁 01开锁):"+rec.mid(18,2);
        mark_str+=" 锁长时间未锁报警(00正常 01报警):"+rec.mid(20,2);
    }
    else if(data1.toInt(nullptr,16)==0xA3)
    {

         mark_str="A3设备刷卡数据上报";

    }
    showMsg(mark_str);


}

void MainWindow::init()
{

    tcp_server_ = new QTcpServer(this);
    tcp_socket_ = new QTcpSocket(this);
    connect(tcp_server_,SIGNAL(newConnection()),this,SLOT(slotNewConnection()));

}

void MainWindow::send(const QByteArray &ba)
{
    int ret=tcp_socket_->write(ba);
    if(ret==-1)
    {
        showMsg("发送失败!IODevice::write (QTcpSocket): device not open");
    }
    else
    {
       showMsg(true,ba);
    }
}

void MainWindow::showMsg(bool isSend, const QByteArray &ba)
{
    QString rec=ba.toHex();

    int count = rec.size()/2;
    QString temp="";
    for(int i=0;i<count;i++)
    {
       temp += rec.mid(i*2,2)+" ";

    }
    QString now_time="["+QDateTime::currentDateTime ().toString ("hh:mm:ss zzz")+"]";
    if(isSend)
    {
        ui->te_info->append(now_time+"[发] "+temp.toUpper());
    }
    else
    {
        ui->te_info->append(now_time+"[收] "+temp.toUpper());
    }

}

void MainWindow::showMsg(const QString &msg)
{
    QString now_time="["+QDateTime::currentDateTime ().toString ("hh:mm:ss zzz")+"] ";
    ui->te_info->append(now_time+msg);
}


void MainWindow::on_btn_listen_clicked()
{
    ui->btn_listen->setEnabled(false);
    ui->le_port->setEnabled(false);
    if(tcp_server_->listen(QHostAddress::Any,ui->le_port->text().toUInt()))  //监听端口号
    {
        showMsg("开启服务器成功！");
    }
    else
    {
        showMsg("开启服务器失败！");
        ui->btn_listen->setEnabled(true);
        ui->le_port->setEnabled(true);
    }
}


void MainWindow::on_btn_close_clicked()
{
    tcp_server_->close();
    tcp_socket_->close();
    ui->btn_listen->setEnabled(true);
    ui->le_port->setEnabled(true);
}


void MainWindow::on_btn_send_clicked()
{
    //qint64 write(const QByteArray &data);
    QByteArray ba;
    ba.resize(4);
    ba[0]=0x3c;
    ba[1]=0x3d;
    ba[2]=0x3e;
    ba[3]=0xff;
    send(ba);
}


void MainWindow::on_btn_open_lock_clicked()
{

    QByteArray ba;
    ba.resize(13);
    ba[0]=0x0c;
    ba[1]=0xb3;
    ba[2]=0x01;
    ba[3]=0x02;
    ba[4]=0x03;
    ba[5]=0x04;
    ba[6]=0x05;
    ba[7]=0x06;
    ba[8]=0x07;
    ba[9]=0x11;
    ba[10]=0x22;
    ba[11]=0xa5;
    ba[12]=0x3e;
    send(ba);

}


void MainWindow::on_btn_clean_clicked()
{
    ui->te_info->clear();
}