3、Qt Project之Socket网络编程
Socket网络编程
Step1：首先完成整个界面的设计
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>MainWindow</class>
<widget class="QMainWindow" name="MainWindow">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>421</width>
<height>533</height>
</rect>
</property>
<property name="windowTitle">
<string>MainWindow</string>
</property>
<widget class="QWidget" name="centralWidget">
<widget class="QLineEdit" name="IP_Address">
<property name="geometry">
<rect>
<x>30</x>
<y>140</y>
<width>113</width>
<height>27</height>
</rect>
</property>
</widget>
<widget class="QLabel" name="label_4">
<property name="geometry">
<rect>
<x>20</x>
<y>100</y>
<width>171</width>
<height>21</height>
</rect>
</property>
<property name="font">
<font>
<pointsize>10</pointsize>
<italic>true</italic>
<underline>false</underline>
<strikeout>false</strikeout>
</font>
</property>
<property name="cursor">
<cursorShape>BlankCursor</cursorShape>
</property>
<property name="text">
<string>Designed by : mm1994uestc</string>
</property>
<property name="alignment">
<set>Qt::AlignCenter</set>
</property>
</widget>
<widget class="QLabel" name="label_6">
<property name="geometry">
<rect>
<x>0</x>
<y>-10</y>
<width>321</width>
<height>51</height>
</rect>
</property>
<property name="font">
<font>
<pointsize>28</pointsize>
<italic>true</italic>
<underline>false</underline>
<strikeout>false</strikeout>
</font>
</property>
<property name="cursor">
<cursorShape>BlankCursor</cursorShape>
</property>
<property name="text">
<string>Qt interface Demo!</string>
</property>
<property name="alignment">
<set>Qt::AlignCenter</set>
</property>
</widget>
<widget class="QLabel" name="label_5">
<property name="geometry">
<rect>
<x>0</x>
<y>40</y>
<width>171</width>
<height>51</height>
</rect>
</property>
<property name="font">
<font>
<pointsize>16</pointsize>
<italic>true</italic>
<underline>false</underline>
<strikeout>false</strikeout>
</font>
</property>
<property name="cursor">
<cursorShape>BlankCursor</cursorShape>
</property>
<property name="text">
<string>Socket Control</string>
</property>
<property name="alignment">
<set>Qt::AlignCenter</set>
</property>
</widget>
<widget class="QLineEdit" name="Client_Port">
<property name="geometry">
<rect>
<x>200</x>
<y>140</y>
<width>51</width>
<height>27</height>
</rect>
</property>
</widget>
<widget class="QPushButton" name="Client_Button">
<property name="geometry">
<rect>
<x>260</x>
<y>140</y>
<width>151</width>
<height>27</height>
</rect>
</property>
<property name="text">
<string>TCP-Client-Connect</string>
</property>
</widget>
<widget class="QLabel" name="label">
<property name="geometry">
<rect>
<x>10</x>
<y>130</y>
<width>21</width>
<height>41</height>
</rect>
</property>
<property name="text">
<string>IP:</string>
</property>
</widget>
<widget class="QLabel" name="label_2">
<property name="geometry">
<rect>
<x>150</x>
<y>130</y>
<width>51</width>
<height>41</height>
</rect>
</property>
<property name="text">
<string>PORT:</string>
</property>
</widget>
<widget class="QLineEdit" name="Server_Port">
<property name="geometry">
<rect>
<x>60</x>
<y>320</y>
<width>51</width>
<height>27</height>
</rect>
</property>
</widget>
<widget class="QLabel" name="label_3">
<property name="geometry">
<rect>
<x>10</x>
<y>310</y>
<width>51</width>
<height>41</height>
</rect>
</property>
<property name="text">
<string>PORT:</string>
</property>
</widget>
<widget class="QPushButton" name="Server_Button">
<property name="geometry">
<rect>
<x>120</x>
<y>320</y>
<width>161</width>
<height>27</height>
</rect>
</property>
<property name="text">
<string>TCP-Server-Monitor</string>
</property>
</widget>
<widget class="QLabel" name="label_7">
<property name="geometry">
<rect>
<x>10</x>
<y>170</y>
<width>151</width>
<height>41</height>
</rect>
</property>
<property name="text">
<string>Data Ricieve Frame:</string>
</property>
</widget>
<widget class="QLabel" name="label_8">
<property name="geometry">
<rect>
<x>230</x>
<y>170</y>
<width>151</width>
<height>41</height>
</rect>
</property>
<property name="text">
<string>Data Send Frame:</string>
</property>
</widget>
<widget class="QLabel" name="label_9">
<property name="geometry">
<rect>
<x>10</x>
<y>350</y>
<width>151</width>
<height>41</height>
</rect>
</property>
<property name="text">
<string>Data Ricieve Frame:</string>
</property>
</widget>
<widget class="QLabel" name="label_10">
<property name="geometry">
<rect>
<x>230</x>
<y>350</y>
<width>151</width>
<height>41</height>
</rect>
</property>
<property name="text">
<string>Data Send Frame:</string>
</property>
</widget>
<widget class="QLabel" name="Corver">
<property name="geometry">
<rect>
<x>220</x>
<y>40</y>
<width>171</width>
<height>91</height>
</rect>
</property>
<property name="text">
<string> Corver</string>
</property>
</widget>
<widget class="QPushButton" name="pushButton">
<property name="geometry">
<rect>
<x>350</x>
<y>180</y>
<width>51</width>
<height>27</height>
</rect>
</property>
<property name="text">
<string>Send</string>
</property>
</widget>
<widget class="QPushButton" name="ServerSend">
<property name="geometry">
<rect>
<x>350</x>
<y>360</y>
<width>51</width>
<height>27</height>
</rect>
</property>
<property name="text">
<string>Send</string>
</property>
</widget>
<widget class="QPlainTextEdit" name="Client_Recieve">
<property name="geometry">
<rect>
<x>10</x>
<y>210</y>
<width>171</width>
<height>101</height>
</rect>
</property>
</widget>
<widget class="QPlainTextEdit" name="Client_Send">
<property name="geometry">
<rect>
<x>230</x>
<y>210</y>
<width>171</width>
<height>101</height>
</rect>
</property>
</widget>
<widget class="QPlainTextEdit" name="Server_Recieve">
<property name="geometry">
<rect>
<x>10</x>
<y>390</y>
<width>171</width>
<height>101</height>
</rect>
</property>
</widget>
<widget class="QPlainTextEdit" name="Server_Send">
<property name="geometry">
<rect>
<x>230</x>
<y>390</y>
<width>171</width>
<height>101</height>
</rect>
</property>
</widget>
<widget class="QPushButton" name="Client_Clear">
<property name="geometry">
<rect>
<x>150</x>
<y>180</y>
<width>51</width>
<height>27</height>
</rect>
</property>
<property name="text">
<string>Clear</string>
</property>
</widget>
<widget class="QPushButton" name="Server_Clear">
<property name="geometry">
<rect>
<x>150</x>
<y>360</y>
<width>51</width>
<height>27</height>
</rect>
</property>
<property name="text">
<string>Clear</string>
</property>
</widget>
</widget>
<widget class="QMenuBar" name="menuBar">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>421</width>
<height>25</height>
</rect>
</property>
</widget>
<widget class="QToolBar" name="mainToolBar">
<attribute name="toolBarArea">
<enum>TopToolBarArea</enum>
</attribute>
<attribute name="toolBarBreak">
<bool>false</bool>
</attribute>
</widget>
<widget class="QStatusBar" name="statusBar"/>
</widget>
<layoutdefault spacing="6" margin="11"/>
<resources/>
<connections/>
</ui>
Ubuntu 16.04 Edition Qt Socket Project Windows 10 端的Socket Tool
整个界面的样式如图所示，包括了TCP Client以及TCP Server端。
IP表示客户端将要连接的TCP Server的服务器ip地址，PORT填入的是对应的TCP Server的地址开放的监听的端口号
Clear按钮是用来清楚Server或者Client的接收空间，Send是用来发送发送栏当中的数据的。其他按钮用来开启对应的服务。
Step2：相关槽函数已经接收读取函数的实现
void MainWindow::Client_Recieve_Data(void)
{
QByteArray buf;
buf = client->readAll();
if(!buf.isEmpty())
{
QString str = this->ui->Client_Recieve->toPlainText();
str += tr(buf);
this->ui->Client_Recieve->clear();
this->ui->Client_Recieve->appendPlainText(str);
}
buf.clear();
} void MainWindow::on_Client_Button_clicked(bool checked)
{
if(!ClientFlag)
{
QString IP,PORT;
IP = this->ui->IP_Address->text();
PORT = this->ui->Client_Port->text(); qDebug() << IP;
qDebug() << PORT; client->connectToHost(QHostAddress(IP),PORT.toInt(),QTcpSocket::ReadWrite);
qDebug() << "Client is Started!"; QObject::connect(client,&QTcpSocket::readyRead,this,&MainWindow::Client_Recieve_Data);
this->ui->Client_Button->setStyleSheet("background-color: rgb(85,170,0);");
}
else
{
this->ui->Client_Button->setStyleSheet("background-color: rgb(0,0,0);");
client->close();
qDebug() << "Client is Closed!";
} ClientFlag = !ClientFlag;
} void MainWindow::on_pushButton_clicked(bool checked)
{
if(ClientFlag)
{
QString Send_data;
Send_data = this->ui->Client_Send->toPlainText();
qDebug() << Send_data;
client->write(Send_data.toLatin1());
qDebug() << "Data sended!";
}
} void MainWindow::on_Client_Clear_clicked(bool checked)
{
this->ui->Client_Recieve->clear();
qDebug() << "Client_Recieve_CLear!";
} /************************************************************
* Server Side Programming!
* The Qt Socket Programming have ever finished binding the port!
* The accept func is trigger by a new connection signal!
***********************************************************/ void MainWindow::readClient(void)
{
QByteArray buf;
buf = client_connect->readAll();
if(!buf.isEmpty())
{
QString str = this->ui->Server_Recieve->toPlainText();
str += tr(buf);
this->ui->Server_Recieve->clear();
this->ui->Server_Recieve->appendPlainText(str);
}
buf.clear();
} void MainWindow::accepConnection(void)
{
client_connect = server->nextPendingConnection();
QObject::connect(client_connect,&QTcpSocket::readyRead,this,&MainWindow::readClient);
} void MainWindow::on_Server_Clear_clicked(bool checked)
{
this->ui->Server_Recieve->clear();
qDebug() << "Server_Recieve_Clear!";
} void MainWindow::on_ServerSend_clicked(bool checked)
{
if(ServerFlag)
{
QString SendData;
SendData = this->ui->Server_Send->toPlainText();
client_connect->write(SendData.toLatin1()); qDebug() << SendData;
qDebug() << "ServerData send!";
}
} void MainWindow::on_Server_Button_clicked(bool checked)
{
if(!ServerFlag)
{
QString MonitorPort;
MonitorPort = this->ui->Server_Port->text(); int PortNum;
PortNum = MonitorPort.toInt(); server->listen(QHostAddress::Any,PortNum); QObject::connect(server,&QTcpServer::newConnection,this,&MainWindow::accepConnection); qDebug() << "Server Started!";
qDebug() << "PortNum:" << PortNum;
this->ui->Server_Button->setStyleSheet("background-color: rgb(85,170,0);");
}
else
{
this->ui->Server_Button->setStyleSheet("background-color: rgb(0,0,0);");
client_connect->close();
server->close();
qDebug() << "Server Closed!";
}
ServerFlag = !ServerFlag;
}
Step3：槽函数的声明&Socket对象定义
private slots:
void on_Client_Button_clicked(bool checked); void on_pushButton_clicked(bool checked); void Client_Recieve_Data(void); void accepConnection(void); void readClient(void); void on_Client_Clear_clicked(bool checked); void on_Server_Clear_clicked(bool checked); void on_ServerSend_clicked(bool checked); void on_Server_Button_clicked(bool checked); void TimeOutProcess(void); private:
Ui::MainWindow *ui; QTcpSocket *client; QTcpServer *server;
QTcpSocket *client_connect; QTimer *TimeMonitor; bool ClientFlag = false;
bool ServerFlag = false;
Step4：信号和槽的连接
connect(this->ui->Client_Button,SIGNAL(clicked(bool)),this,SLOT(on_Client_Button_clicked()));
connect(this->ui->pushButton,SIGNAL(clicked(bool)),this,SLOT(on_pushButton_clicked()));
connect(this->ui->Client_Clear,SIGNAL(clicked(bool)),this,SLOT(on_Client_Clear_clicked()));
connect(this->ui->Server_Clear,SIGNAL(clicked(bool)),this,SLOT(on_Server_Clear_clicked()));
connect(this->ui->ServerSend,SIGNAL(clicked(bool)),this,SLOT(on_ServerSend_clicked()));
connect(this->ui->Server_Button,SIGNAL(clicked(bool)),this,SLOT(on_Server_Button_clicked()));
connect(TimeMonitor,&QTimer::timeout,this,&MainWindow::TimeOutProcess);
完成上述操作，基本就完成了Qt Socket程序的功能。
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