#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
labListen = new QLabel("监听状态：");
labListen->setMaximumWidth(150);
ui->statusbar->addWidget(labListen);
labSocketState = new QLabel("socket状态：");
labSocketState->setMaximumWidth(200);
ui->statusbar->addWidget(labSocketState);
QString loaclIP = getLocalIP(); //获取本机IP地址
this->setWindowTitle(this->windowTitle() + "---本机IP地址：" + loaclIP);
ui->lineEditIP->setText(loaclIP);
tcpServer = new QTcpServer(this);
connect(tcpServer, SIGNAL(newConnection()), this, SLOT(slotNewConnection()));
}
MainWindow::~MainWindow()
{
if(tcpSocket != nullptr)
{
if(tcpSocket->state() == QAbstractSocket::ConnectingState)
{
tcpSocket->disconnectFromHost(); //断开与客户端连接
}
}
if(tcpServer->isListening())
{
tcpServer->close(); //停止网络监听
}
delete ui;
}
QString MainWindow::getLocalIP()
{
QString hostName = QHostInfo::localHostName(); //获取本机主机名
QHostInfo hostInfo = QHostInfo::fromName(hostName);
QString localIP = "";
QList<QHostAddress>addrList = hostInfo.addresses(); //获取本机IP地址列表
if(addrList.isEmpty())
{
return localIP;
}
foreach(QHostAddress aHost, addrList)
{
if(QAbstractSocket::IPv4Protocol == aHost.protocol())
{
localIP = aHost.toString();
break;
}
}
return localIP;
}
void MainWindow::on_actStart_clicked()
{
QString IP = ui->lineEditIP->text();
quint16 port = ui->lineEditPort->text().toShort(nullptr, 10);
QHostAddress address(IP); //通过IP地址字符串创建QHostAddress对象
tcpServer->listen(address, port); //开始监听
ui->TextEdit->appendPlainText("开始监听.....");
ui->TextEdit->appendPlainText("服务器地址：" + tcpServer->serverAddress().toString());
ui->TextEdit->appendPlainText("服务器端口：" + QString::number(tcpServer->serverPort()));
ui->actStart->setEnabled(false);
ui->actStop->setEnabled(true);
labListen->setText("监听状态：正在监听...");
}
void MainWindow::slotNewConnection()
{
tcpSocket = tcpServer->nextPendingConnection(); //创建socket
connect(tcpSocket, SIGNAL(connected()), this, SLOT(slotClientConnect()));
slotClientConnect();
connect(tcpSocket, SIGNAL(disconnected()), this, SLOT(slotClientDisconnect()));
connect(tcpSocket, SIGNAL(stateChanged(QAbstractSocket::SocketState)), this, SLOT(slotStateChange(QAbstractSocket::SocketState)));
//connect(tcpSocket, &QTcpSocket::stateChanged, this, &MainWindow::slotStateChange);
slotStateChange(tcpSocket->state());
connect(tcpSocket, SIGNAL(readyRead()), this, SLOT(slotSocketReadyRead()));
}
void MainWindow::slotClientConnect()
{
ui->TextEdit->appendPlainText("客户端已连接");
ui->TextEdit->appendPlainText("peer address:" + tcpSocket->peerAddress().toString());
ui->TextEdit->appendPlainText("peer port:" + QString::number(tcpSocket->peerPort()));
}
void MainWindow::slotClientDisconnect()
{
ui->TextEdit->appendPlainText("客户端断开连接");
tcpSocket->deleteLater();
}
void MainWindow::slotStateChange(QAbstractSocket::SocketState socketState)
{
switch (socketState) {
case QAbstractSocket::UnconnectedState:
labSocketState->setText("未连接");
break;
case QAbstractSocket::HostLookupState:
labSocketState->setText("HostLookupState");
break;
case QAbstractSocket::ConnectingState:
labSocketState->setText("ConnectingState");
break;
case QAbstractSocket::ConnectedState:
labSocketState->setText("ConnectedState");
break;
case QAbstractSocket::BoundState:
labSocketState->setText("BoundState");
break;
case QAbstractSocket::ClosingState:
labSocketState->setText("ClosingState");
break;
case QAbstractSocket::ListeningState:
labSocketState->setText("ListeningState");
break;
}
}
void MainWindow::on_actStop_clicked()
{
if(tcpServer->isListening())
{
if(tcpSocket != nullptr)
{
if(tcpSocket->state() == QAbstractSocket::ConnectedState)
{
tcpSocket->disconnectFromHost();
}
}
tcpServer->close();
ui->actStart->setEnabled(true);
ui->actStop->setEnabled(false);
labListen->setText("监听状态：已停止监听");
}
}
void MainWindow::on_send_clicked()
{
QString msg = ui->lineEdit->text();
ui->TextEdit->appendPlainText("[out]:" + msg);
ui->lineEdit->clear();
ui->lineEdit->setFocus();
QByteArray str = msg.toUtf8();
str.append('\n');
tcpSocket->write(str);
}
void MainWindow::slotSocketReadyRead()
{
while (tcpSocket->canReadLine()) {
ui->TextEdit->appendPlainText("[in]:" + tcpSocket->readLine());
}
}
void MainWindow::on_clear_clicked()
{
ui->lineEdit->clear();
ui->TextEdit->clear();
}
void MainWindow::on_exit_clicked()
{
this->close();
}
TCP-QT.zip （10个子文件） 
TCP-QT client client 
mainwindow.h 874B mainwindow.cpp 4KB main.cpp 183B mainwindow.ui 4KB client.pro 1KB server server mainwindow.h 1KB mainwindow.cpp 5KB main.cpp 183B server.pro 1KB mainwindow.ui 4KB资源评论
