Qt TCP客户端与服务端的连接
李木木呀~ 人气:0Qt TCP的客户端与服务端的连接,供大家参考,具体内容如下
可以实现局域网内简单的信息传递(文件传输,稍后更新)
界面是用ui设计师做的简单设计
客户端
(1)、ClientWidget.h 头文件
#ifndef CLIENTWIDGET_H #define CLIENTWIDGET_H #include <QWidget> #include "ui_ClientWidget.h" #include <QTcpSocket> #include <QHostAddress> #include <QTextCodec> class ClientWidget : public QWidget, public Ui::ClientWidget { Q_OBJECT public: ClientWidget(QWidget *parent = 0); ~ClientWidget(); private slots: //连接按钮 void onConnectButtonClicked(); // void onTextEditRead(); //发送按钮 void onButtonSendClicked(); //获取对方发送的内容 void onRecesiveDataFromServer(); //断开连接 void onDisConnect(); private: //Ui::ClientWidget ui; QTcpSocket *tcpSocket; }; #endif // CLIENTWIDGET_H
(2)、ClientWidget.cpp文件
#include "stdafx.h" #include "ClientWidget.h" #include <QPushButton> ClientWidget::ClientWidget(QWidget *parent) : QWidget(parent) { setupUi(this); setWindowTitle(QString::fromWCharArray(L"客户端")); tcpSocket = NULL; //分配空间,指定父对象 tcpSocket = new QTcpSocket(this); ButtonDisconnect->setEnabled(false); //tcpSocket->abort(); //发送与服务器连接信号 connect(connectBtn, SIGNAL(clicked()), this, SLOT(onConnectButtonClicked())); //连接成功后接收到connected信号 connect(tcpSocket, SIGNAL(connected()), this, SLOT(onTextEditRead())); //给服务器发送内容 connect(ButtonSend, SIGNAL(clicked()), this, SLOT(onButtonSendClicked())); //接收来自服务器的内容,信号readReady connect(tcpSocket, SIGNAL(readyRead()), this, SLOT(onRecesiveDataFromServer())); connect(ButtonDisconnect, SIGNAL(clicked()), this, SLOT(onDisConnect())); } ClientWidget::~ClientWidget() { } void ClientWidget::onConnectButtonClicked() { //获取服务器IP和端口 QString ipStr = LineEditIPName->text(); qint16 portName = LineEditPortName->text().toInt(); QHostAddress ip = QHostAddress(ipStr); //主动和服务器建立连接 tcpSocket->connectToHost(ip, portName); } void ClientWidget::onTextEditRead() { TextEditRead->setText(QString::fromLocal8Bit("成功和服务器建立好连接!!!")); connectBtn->setEnabled(false); ButtonDisconnect->setEnabled(true); } void ClientWidget::onButtonSendClicked() { if (tcpSocket == NULL) { return; } //获取编辑框内容 QString str = TextEditWrite->toPlainText(); //发送文本内容 tcpSocket->write(str.toUtf8().data()); TextEditWrite->clear(); } void ClientWidget::onRecesiveDataFromServer() { QByteArray arrayAll = tcpSocket->readAll(); QTextCodec *tc = QTextCodec::codecForName("UTF-8"); QString str = tc->toUnicode(arrayAll); //追加到读取编辑区中 TextEditRead->append(str); } void ClientWidget::onDisConnect() { if (tcpSocket == NULL) { return; } tcpSocket->disconnectFromHost(); tcpSocket->close(); connectBtn->setEnabled(true); ButtonDisconnect->setEnabled(false); TextEditRead->setText(QString::fromLocal8Bit("连接已断开!!!")); }
服务器
(1)、ServerWidget.h文件
#ifndef SERVERWIDGET_H #define SERVERWIDGET_H #include <QtGui/QWidget> #include "ui_ServerWidget.h" #include <QTcpServer> #include <QTcpSocket> #include <QString> #include <QTextCodec> class ServerWidget : public QWidget { Q_OBJECT public: ServerWidget(QWidget *parent = 0, Qt::WFlags flags = 0); ~ServerWidget(); QTcpServer *tcpServer; QTcpSocket *tcpSocket; private slots: void OnConnectTcpServer(); void OnSendButtonClicked(); void OnCloseButtonClicked(); void OnSeResiveData(); void OnDisconnected(); private: Ui::ServerWidgetClass ui; }; #endif // SERVERWIDGET_H
(2)、ServerWidget.cpp 文件
#include "stdafx.h" #include "ServerWidget.h" ServerWidget::ServerWidget(QWidget *parent, Qt::WFlags flags) : QWidget(parent, flags) { ui.setupUi(this); tcpServer = NULL; tcpSocket = NULL; setWindowTitle(QString::fromWCharArray(L"服务器(端口:8888)")); //箭筒套接字,指定父对象,让其自动回收空间 tcpServer = new QTcpServer(this); //监听并绑定端口 tcpServer->listen(QHostAddress::Any, 8888); connect(tcpServer, SIGNAL(newConnection()), this, SLOT(OnConnectTcpServer())); connect(ui.sendButton, SIGNAL(clicked()), this, SLOT(OnSendButtonClicked())); connect(ui.closeButton, SIGNAL(clicked()), this, SLOT(OnCloseButtonClicked())); connect(tcpServer, SIGNAL(disconnected()), this, SLOT(OnDisconnected())); } ServerWidget::~ServerWidget() { } #include <QDebug> void ServerWidget::OnConnectTcpServer() { //取出建立好的套接字 tcpSocket = tcpServer->nextPendingConnection(); //获取对方的IP和端口号 QString ipStr = tcpSocket->peerAddress().toString(); qint16 portName = tcpSocket->peerPort(); QString connectStr = QString::fromLocal8Bit("成功连接"); QString tempStr = QString("[%1 : %2]:" + connectStr).arg(ipStr).arg(portName); ui.textRead->setText(tempStr); connect(tcpSocket, SIGNAL(readyRead()), this, SLOT(OnSeResiveData())); } void ServerWidget::OnSendButtonClicked() { if (tcpSocket == NULL) { return; } //获取编辑区的内容 QString str = ui.textWrite->toPlainText(); //给对方发送数据。使用套接字是tcpSocket tcpSocket->write(str.toUtf8().data()); ui.textWrite->clear(); } void ServerWidget::OnCloseButtonClicked() { if (tcpSocket == NULL) { return; } //主动和客户端断开连接 tcpSocket->disconnectFromHost(); ui.textRead->setText(QString::fromLocal8Bit("连接已断开!!!")); tcpSocket = NULL; } void ServerWidget::OnSeResiveData() { //从通信套接字中取出内容 QByteArray dataAll = tcpSocket->readAll(); QTextCodec *tc = QTextCodec::codecForName("UTF-8"); QString str = tc->toUnicode(dataAll); ui.textRead->append(str); } void ServerWidget::OnDisconnected() { ui.textRead->setText(QString::fromLocal8Bit("连接已断开!!!")); }
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