QT开发的即时通讯软件(基于TCP)
这是本人在学习QT和计算机网络的时候自己开发的TCP网络通讯软件，包含服务端和客户端两个工程，亲测可用，我自己也经常用它们做网络的测试，注释详细，欢迎参考，先上图，源码附在下面，也可以直接在这下载：https://download.csdn.net/download/qq_18108083/10798425 赚点积分，嘿嘿，谢谢大家~
一、server端
(1).mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include
#include
#include //保证正常显示中文
#include
#include
#include
#include
#include //图片
#include
#include
#include //线程实验
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
QImage *image;
QTimer *timer;
//线程实验
myThread *thread;
int pb;
private:
Ui::MainWindow *ui;
QTcpServer *tserver;
QTcpSocket *tsocket;
private slots:
void listenStartSlot(); //开始侦听槽
void newConnectSlot(); //收到新连接
void receiveTcpSlot(); //槽函数用于对接受的数据进行处理
void sendTcpSlot(); //发送tcp信号槽（发送按钮触发）
void tcpDisconnect(); //tcp连接中断
//线程实验
void closeThreadSlot();
};
#endif // MAINWINDOW_H
(2).mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
tserver =new QTcpServer; //创建新TCP服务器
QObject::connect(ui->listenButton,SIGNAL(clicked(bool)),this,SLOT(listenStartSlot())); //开始侦听
QObject::connect(this->tserver,SIGNAL(newConnection()),this,SLOT(newConnectSlot())); //侦听到新连接
QObject::connect(ui->sendButton,SIGNAL(clicked(bool)),this,SLOT(sendTcpSlot())); //发送数据
//线程实验
QObject::connect(ui->closeThreadButton,SIGNAL(clicked(bool)),this,SLOT(closeThreadSlot()));
//线程实验
pb=0;
thread=new myThread(pb);
thread->start();
}
MainWindow::~MainWindow()
{
tserver->close();
tserver->deleteLater();
delete thread; //线程实验
delete ui;
}
void MainWindow::listenStartSlot() //开始侦听槽
{
if(ui->listenButton->text()=="侦听")
{
quint16 port=quint16(ui->listenPortLineEdit->text().toUInt());//获取监听端口
qDebug()<<"port:"<listen(QHostAddress::Any,port))
{
QMessageBox::information(this,"提示","侦听设置出错");
return;
}
else
{
QMessageBox::information(this,"提示","开始侦听");
ui->listenButton->setText("取消侦听");
}
}
else
{
if(tsocket->state()==QAbstractSocket::ConnectedState)
{
tsocket->disconnectFromHost(); //关闭连接
}
tserver->close(); //取消侦听
ui->listenButton->setText("侦听");
}
}
void MainWindow::newConnectSlot() //收到新连接
{
tsocket=tserver->nextPendingConnection(); //server让自己的socket与client的socket相连
QObject::connect(this->tsocket,SIGNAL(disconnected()),this,SLOT(tcpDisconnect())); //套接字断开连接
QObject::connect(this->tsocket,SIGNAL(readyRead()),this,SLOT(receiveTcpSlot())); //收到数据
QMessageBox::information(this,"提示","侦听到新连接");
}
void MainWindow::receiveTcpSlot() //槽函数用于对接受的数据进行处理
{
QByteArray receiveData; //因为传来的数据类型是未知的，用bytearray类型
receiveData=tsocket->readAll();
ui->receiveContextTextEdit->append(QString::fromUtf8(receiveData)); //////////////
}
void MainWindow::sendTcpSlot() //发送tcp信号槽（发送按钮触发）
{
//发送图片
// qDebug()<<"sendPicture clicked"<write(dataArray);
// qDebug("write len:%d",write_len);
//添加判断连接
QString sendContext=ui->sendContextTextEdit->document()->toPlainText();//////////////////////
tsocket->write(sendContext.toUtf8()); //以Utf8形式的bytearray发送
tsocket->flush();
}
void MainWindow::tcpDisconnect() //tcp连接中断
{
ui->listenButton->setText("侦听");
QMessageBox::information(this,"提示","TCP连接中断");
}
void MainWindow::closeThreadSlot()
{
delete thread;
}
二、client端
(1).mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include
#include //保证正常显示中文
#include
#include
#include
#include
#include
#include
#include
#include //数据流
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
private:
Ui::MainWindow *ui;
QTcpSocket *tsocket;
private slots:
void connectHostSlot(); //请求建立连接
void receiveTcpSlot(); //槽函数用于对接受的数据进行处理
void sendTcpSlot(); //发送tcp信号槽（发送按钮触发）
void tcpDisconnect(); //tcp连接中断
};
#endif // MAINWINDOW_H
(2)mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
tsocket =new QTcpSocket; //新建一个TCP套接字
QObject::connect(ui->connectButton,SIGNAL(clicked(bool)),this,SLOT(connectHostSlot())); //连接主机
QObject::connect(ui->sendButton,SIGNAL(clicked(bool)),this,SLOT(sendTcpSlot())); //发送数据
QObject::connect(tsocket,SIGNAL(readyRead()),this,SLOT(receiveTcpSlot())); //接收数据
QObject::connect(tsocket,SIGNAL(disconnected()),this,SLOT(tcpDisconnect())); //tcp连接中断
}
MainWindow::~MainWindow()
{
delete ui;
delete this->tsocket; //清理内存
}
void MainWindow::connectHostSlot() //请求建立连接
{
if(ui->connectButton->text()=="连接")
{
QString hostip=ui->hostIpLineEdit->text(); //获取主机ip
quint16 hostport=quint16(ui->hostPortLineEdit->text().toUInt()); //获取主机端口
tsocket->abort(); //取消已有连接
tsocket->connectToHost(hostip,hostport); //请求与服务器建立连接
if(!tsocket->waitForConnected(30000)) //等待30s
{
QMessageBox::information(this,"提示","连接失败");
return;
}
else
{
QMessageBox::information(this,"提示","连接成功");
ui->connectButton->setText("断开连接");
}
}
else
{
tsocket->disconnectFromHost(); //断开连接
ui->connectButton->setText("连接");
}
}
void MainWindow::receiveTcpSlot() //槽函数用于对接受的数据进行处理
{
// QByteArray array;
// while(tsocket->waitForReadyRead(1)){ //连续接收 ，知道接收完毕
// qDebug()<<"bytesAvailable"<readAll());
// }
//
// QBuffer buffer(&array);
// buffer.open(QIODevice::ReadOnly);
//
// QImageReader reader(&buffer,"JPG");
// QImage img = reader.read();
//
// if(!img.isNull()){
// qDebug()<<"right"<imageLabel->setPixmap(QPixmap::fromImage(img).scaled(ui->imageLabel->size()));//按比例缩放
// } else {
// qDebug()<<"error"<readAll();
ui->receiveContextTextEdit->append(QString::fromUtf8(receiveData)); //转换成char *
}
void MainWindow::sendTcpSlot() //发送tcp信号槽（发送按钮触发）
{
//添加判断连接
QString sendContext=ui->sendContextTextEdit->document()->toPlainText();//////////////////////
// tsocket->write(sendContext.toLatin1());
tsocket->write(sendContext.toUtf8()); //将QString转换成QByteArray类型发送
tsocket->flush();
}
void MainWindow::tcpDisconnect() //tcp连接中断
{
ui->connectButton->setText("连接");
QMessageBox::information(this,"提示","TCP连接中断");
}