建筑培训中心,百度seo排名报价,上市公司网站维护,卖掉的网站了对方用来做违法QT网络调试助手 1.开发流程 2.QTtcp服务器 1.1 服务端数据读取 1.2 服务端发送数据-所有客户端 1.3 服务端自动刷新ip地址 1.4 服务端检测客户端断开状态 1.5 服务端发送数据-指定特定客户端发送数据 1.6 服务端停止监听和断开 3.QTtcp客户端 1… QT网络调试助手 1.开发流程 2.QTtcp服务器 1.1 服务端数据读取 1.2 服务端发送数据-所有客户端 1.3 服务端自动刷新ip地址 1.4 服务端检测客户端断开状态 1.5 服务端发送数据-指定特定客户端发送数据 1.6 服务端停止监听和断开 3.QTtcp客户端 1.开发流程 2.QTtcp服务器 1.添加网络访问权限QT network2.创建一个新对象server new QTcpServer(this);3.当监听按钮按下后开始监听
void Widget::on_btnListen_clicked()
{//2.监听bool QTcpServer::listen(const QHostAddress address QHostAddress::Any, quint16 port 0) 8888-15000//QHostAddress addr(192.168.0.101);port ui-lineEditPort-text().toUInt();if(!server-listen(QHostAddress(ui-comboBoxAddr-currentText()),port)){ //自动检测ip地址QHostAddress::AnyQMessageBox msgBox;msgBox.setWindowTitle(监听失败);msgBox.setText(端口号被占用);msgBox.exec();return;}ui-btnListen-setEnabled(false);ui-btnLineOut-setEnabled(true);ui-btnStopListen-setEnabled(true);ui-btnSend-setEnabled(true);//qDebug() QHostAddress(ui-comboBoxAddr-currentText());
}4.监听到新的newConnection()信号后对新的连接进行处理connect(server,SIGNAL(newConnection()),this,SLOT(on_newClient_connect()));void Widget::on_newClient_connect()
{//所有的数据操作都是TcpSocket进行//bool QTcpServer::hasPendingConnections() const 有新的连接返回Trueif(server-hasPendingConnections()){//QTcpSocket *QTcpServer::nextPendingConnection() 返回下个连接来的connectQTcpSocket *connection server-nextPendingConnection(); //获得到的客户端连接信息都在connection里,并将信息也保存在server中qDebug() client addr: connection-peerAddress().toString() ,port: connection-peerPort();ui-textEditRev-insertPlainText(客户端地址: connection-peerAddress().toString()\n客户端端口号: QString::number(connection-peerPort()) \n);connect(connection,SIGNAL(readyRead()),this,SLOT(on_readyRead_handler()));//断开后信号void QAbstractSocket::disconnected()//connect(connection,SIGNAL(disconnected()),this,SLOT(mdisconnected()));//void QAbstractSocket::stateChanged(QAbstractSocket::SocketState socketState)connect(connection,SIGNAL(stateChanged(QAbstractSocket::SocketState)),this,SLOT(mstateChanged(QAbstractSocket::SocketState)));ui-comboBoxChildren-addItem(QString::number(connection-peerPort()));ui-comboBoxChildren-setCurrentText(QString::number(connection-peerPort()));if(!ui-btnSend-isEnabled()){ui-btnSend-setEnabled(true);}}
}1.1 服务端数据读取 connect(connection,SIGNAL(readyRead()),this,SLOT(on_readyRead_handler())void Widget::on_readyRead_handler()
{QTcpSocket *tmpSocket qobject_castQTcpSocket *(sender()); //获得信号的发出者QByteArray RevData tmpSocket-readAll();ui-textEditRev-insertPlainText(客户端: RevData \n);ui-textEditRev-moveCursor(QTextCursor::End); //将读取光标移动至尾部ui-textEditRev-ensureCursorVisible(); //确定光标可见
}1.2 服务端发送数据-所有客户端 在on_newClient_connect()中QTcpSocket *connection server-nextPendingConnection(); 会将信息也保存在server中server是全局变量,对server来说每一个socket都是server的child所以通过其父类QObject的FindChildren可以找到所有的socket
}void Widget::on_btnSend_clicked()
{//QTcpSocket *connection server-nextPendingConnection(); //获得到的客户端连接信息都在connection里,并将信息也保存在server中QListQTcpSocket * tcpSocketClients server-findChildrenQTcpSocket *();for(QTcpSocket *tmp : tcpSocketClients){//ui-textEditSend-toPlainText().toStdString().c_str()--先将QString转换成标准的c字符串,再转换成const char*型tmp-write(ui-textEditSend-toPlainText().toStdString().c_str());}
} 1.3 服务端自动刷新ip地址 QNetworkInterfaceQListQHostAddress QNetworkInterface::allAddresses()//QListQHostAddress QNetworkInterface::allAddresses()QListQHostAddress address QNetworkInterface::allAddresses(); //获取地址for(QHostAddress tmp : address){if(tmp.protocol() QAbstractSocket::IPv4Protocol) //将ipv4的地址刷入comboxui-comboBoxAddr-addItem(tmp.toString());}1.4 服务端检测客户端断开状态
注每次一断开之后必须清空通道即deleteLater()否则server中会一直保留该通道1.信号void QAbstractSocket::disconnected() connect(connection,SIGNAL(disconnected()),this,SLOT(mdisconnected()));void Widget::mdisconnected()
{QTcpSocket *tmpSocket qobject_castQTcpSocket *(sender()); //获得信号的发出者qDebug() client Out;ui-textEditRev-insertPlainText(客户端断开! );tmpSocket-deleteLater();}2.信号void QAbstractSocket::stateChanged(QAbstractSocket::SocketState socketState)void Widget::mstateChanged(QAbstractSocket::SocketState socketState)
{QTcpSocket *tmpSocket qobject_castQTcpSocket *(sender()); //获得信号的发出者switch(socketState){case QAbstractSocket::ClosingState://case QAbstractSocket::UnconnectedState:ui-textEditRev-insertPlainText(客户端断开! );tmpSocket-deleteLater();break;}
}1.5 服务端发送数据-指定特定客户端发送数据 1.因为ComboBox不提供鼠标点击刷新事件因此需要重写ComboBox的鼠标点击事件和信号void MyComboBox::mousePressEvent(QMouseEvent *e)
{if(e-button() Qt::LeftButton){emit ComboBox_clicked();}QComboBox::mousePressEvent(e);
}2.将控件提升为MyComboBox并绑定信号与槽connect(ui-comboBoxChildren,MyComboBox::ComboBox_clicked,this,Widget::MyComboBox_refresh);//刷新ComboBox控件内容---为ComboBox添加接入的端口void Widget::MyComboBox_refresh()
{ui-comboBoxChildren-clear();QListQTcpSocket * tcpSocketClients server-findChildrenQTcpSocket *();for(QTcpSocket *tmp : tcpSocketClients){ui-comboBoxChildren-addItem(QString::number(tmp-peerPort()));}ui-comboBoxChildren-addItem(all);
}2.重写发送
void Widget::on_btnSend_clicked()
{//QTcpSocket *connection server-nextPendingConnection(); //获得到的客户端连接信息都在connection里,并将信息也保存在server中QListQTcpSocket * tcpSocketClients server-findChildrenQTcpSocket *();if(tcpSocketClients.isEmpty()){QMessageBox msg;msg.setText(当前无连接);msg.exec();ui-btnSend-setEnabled(false);return ;}if(ui-comboBoxChildren-currentText() ! all){QString currentname ui-comboBoxChildren-currentText();for(QTcpSocket *tmp :tcpSocketClients){if(QString::number(tmp-peerPort()) currentname){tmp-write(ui-textEditSend-toPlainText().toStdString().c_str());}}}else{for(QTcpSocket *tmp : tcpSocketClients){//ui-textEditSend-toPlainText().toStdString().c_str()--先将QString转换成标准的c字符串,再转换成const char*型tmp-write(ui-textEditSend-toPlainText().toStdString().c_str());}}
} 1.6 服务端停止监听和断开
void Widget::on_btnStopListen_clicked()
{QListQTcpSocket * tcpSocketClients server-findChildrenQTcpSocket *();for(QTcpSocket *tmp : tcpSocketClients){tmp-close();}server-close();ui-btnListen-setEnabled(true);ui-btnLineOut-setEnabled(false);ui-btnStopListen-setEnabled(false);
}void Widget::on_btnLineOut_clicked()
{on_btnStopListen_clicked();delete server;this-close();
}3.QTtcp客户端 客户端逻辑相对简单直接上代码
void Widget::on_pushButtonConnect_clicked()
{//void connectToHost(const QHostAddress address, quint16 port, QIODevice::OpenMode openMode ReadWrite)client-connectToHost(ui-lineEditIp-text(),ui-lineEditPort-text().toUInt()); //连接服务器timer new QTimer(this);timer-setSingleShot(1);timer-setInterval(5000);connect(timer,SIGNAL(timeout()),this,SLOT(onTimerOut()));connect(client,SIGNAL(connected()),this,SLOT(onConnected()));//void QAbstractSocket::error(QAbstractSocket::SocketError socketError)connect(client,SIGNAL(error(QAbstractSocket::SocketError)),this,SLOT(onError(QAbstractSocket::SocketError)));this-setEnabled(false);timer-start();
}void Widget::mread_data_from_server()
{setInsertColor(Qt::black, 服务器 client-readAll());
}void Widget::on_btnSend_clicked()
{QByteArray sendData ui-textEditSend-toPlainText().toStdString().c_str();client-write(sendData);setInsertColor(Qt::red,客户端 sendData);
}void Widget::on_pushButtonOut_clicked()
{client-close();ui-textEditRev-append(断开连接\n);ui-pushButtonConnect-setEnabled(true);ui-lineEditIp-setEnabled(true);ui-lineEditPort-setEnabled(true);ui-pushButtonOut-setEnabled(false);ui-btnSend-setEnabled(false);
}void Widget::onConnected()
{timer-stop();this-setEnabled(true);ui-textEditRev-insertPlainText(连接成功\n);ui-pushButtonConnect-setEnabled(false);ui-lineEditIp-setEnabled(false);ui-lineEditPort-setEnabled(false);ui-pushButtonOut-setEnabled(true);ui-btnSend-setEnabled(true);
}void Widget::onError(QAbstractSocket::SocketError error)
{this-setEnabled(true);on_pushButtonOut_clicked();
}void Widget::onTimerOut()
{ui-textEditRev-insertPlainText(连接超时);client-abort(); //放弃当前连接this-setEnabled(true);}void Widget::setInsertColor(Qt::GlobalColor color, QString str)
{QTextCursor cursor ui-textEditRev-textCursor();QTextCharFormat format;QBrush brush(color);format.setForeground(brush);cursor.setCharFormat(format);cursor.insertText(str\n);ui-textEditRev-moveCursor(QTextCursor::End); //将光标移动至尾部ui-textEditRev-ensureCursorVisible(); //确定光标可见
}链接https://pan.baidu.com/s/1uI_bhvufjcuW1R6CrR9P7g 提取码3urt –来自百度网盘超级会员V5的分享
