window环境下Qt5 基于C++ 语言编写的局域网聊天系统

#include "mainwindow.h" #include "ui_mainwindow.h" extern QString myNickname; MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); tcpSocket =NULL; //分配空间指定父对象 tcpSocket = new QTcpSocket(this); isStart = true; //是没有传文件状态 sendForName = ""; //聊天对象 haveOtherName = false; //有聊天对象 ui->label_3->setText(QString("我是%1").arg(myNickname)); connect(tcpSocket,&QTcpSocket::connected,[=]() { //qDebug()<<"yyyy"; ui->msgRead->append("成功和服务器建立好连接"); link(); //发送建立连接函数 }); //读数据连接 connect(tcpSocket,SIGNAL(readyRead()),this,SLOT(readData())); //定时器连接槽函数发送文件 pathTimer = new QTimer(this); connect(pathTimer,SIGNAL(timeout()),this,SLOT(TimeSendData())); } MainWindow::~MainWindow() { delete ui; } //连接 void MainWindow::on_pushButton_connect_clicked() { QString ip = ui->lineEdit_ip->text(); qint16 port = ui->lineEdit_port->text().toInt(); tcpSocket->connectToHost(QHostAddress(ip),port); } //发送文本点击 void MainWindow::on_pushButton_send_clicked() { if(haveOtherName == true) { QString str = ui->msgWrite->toPlainText(); //组包发送 QString sendStr = "AAAA"+sendForName+"##"+str; tcpSocket->write(sendStr.toUtf8().data()); ui->msgWrite->clear(); ui->msgWrite->setFocus(); }else { QMessageBox::information(NULL,"提示信息","先选择需要发送的用户"); } } //读数据槽 void MainWindow::readData() { QByteArray buf = tcpSocket->readAll(); if(true == isStart) { QString strbuf = QString(buf); qDebug()<<strbuf; if(strbuf.mid(0,4) == "AAAA") //普通聊天 { QString mycmd = strbuf.mid(4); QString otherName = mycmd.section("##",0,0); QString text = mycmd.section("##",1,1); QDateTime time = QDateTime::currentDateTime(); QString strtime = time.toString("yyyy-MM-dd hh:mm:ss"); ui->msgRead->setTextColor(QColor(Qt::green)); //变成绿色字体 ui->msgRead->append(QString("[%1%2发布的私聊]::%3").arg(strtime).arg(otherName).arg(text)); } else if(strbuf.mid(0,4) == "BBBB") //上线 { QString otherName = strbuf.mid(4); QString str = otherName+"已上线"; QDateTime time = QDateTime::currentDateTime(); QString strtime = time.toString("yyyy-MM-dd hh:mm:ss"); ui->msgRead->setTextColor(QColor(Qt::gray)); //变成灰色字体 ui->msgRead->append(QString("[%1]%2").arg(strtime).arg(str)); // 添加 itemForm *dataItem = new itemForm(this); dataItem->showData(otherName); connect(dataItem,SIGNAL(nameBtnCleck(QString)),this,SLOT(sendForNameSlot(QString))); QString itemName = dataItem->giveName(); QListWidgetItem *item = new QListWidgetItem(itemName); QIcon icon(":/res/check1.ico"); item->setIcon(icon); item->setSizeHint(QSize(139,37)); ui->listWidget->addItem(item); ui->listWidget->setItemWidget(item,dataItem); }else if(strbuf.mid(0,4) == "CCCC") //下线 { QString otherName = strbuf.mid(4); QString str = otherName+"已下线"; QDateTime time = QDateTime::currentDateTime(); QString strtime = time.toString("yyyy-MM-dd hh:mm:ss"); ui->msgRead->setTextColor(QColor(Qt::gray)); //变成灰色字体 ui->msgRead->append(QString("[%1]%2").arg(strtime).arg(str)); int count = ui->listWidget->count(); for(int i = 0;i<count;i++) { QListWidgetItem *item = ui->listWidget->item(i); if(item->text() == otherName) //是这个 { ui->listWidget->removeItemWidget(item); delete item; if(otherName == sendForName) { haveOtherName = false; } return; //退出 } } }else if(strbuf.mid(0,4) == "DDDD") //传输文件名 { QString mycmd = strbuf.mid(4); isStart = false; //取到名字 recvfileName = mycmd.section("##",0,0); recvfileSize = mycmd.section("##",1,1).toInt(); //谁发来的 recvOtherPathName = mycmd.section("##",2,2); recvSize = 0; recvfile.setFileName(recvfileName); bool isok = recvfile.open(QIODevice::WriteOnly); if(false == isok) { qDebug()<<"接收出错"; } }else if (strbuf.mid(0,4) == "EEEE") { //刚上线时，收到在线的名字 QString textname = strbuf.mid(4); //王五##李四## textname.chop(2); //删除后面两个字符（##） QStringList strList = textname.split("##"); //以##分开 foreach (QString s, strList) { //添加 itemForm *dataItem = new itemForm(this); dataItem->showData(s); connect(dataItem,SIGNAL(nameBtnCleck(QString)),this,SLOT(sendForNameSlot(QString))); QString itemName = dataItem->giveName(); QListWidgetItem *item = new QListWidgetItem(itemName); QIcon icon(":/res/check1.ico"); item->setIcon(icon); item->setSizeHint(QSize(139,37)); ui->listWidget->addItem(item); ui->listWidget->setItemWidget(item,dataItem); } }else if (strbuf.mid(0,4) == "FFFF") { QString mycmd = strbuf.mid(4); QString otherName = mycmd.section("##",0,0); QString text = mycmd.section("##",1,1); QDateTime time = QDateTime::currentDateTime(); QString strtime = time.toString("yyyy-MM-dd hh:mm:ss"); ui->msgRead->setTextColor(QColor(Qt::blue)); //变成蓝色字体 ui->msgRead->append(QString("[%1%2发布的群消息]::%3").arg(strtime).arg(otherName).arg(text)); } }else { //接收文件 qint64 len = recvfile.write(buf); recvSize += len; if(recvSize == recvfileSize) { qDebug()<<"接收完成"; recvfile.close(); isStart = true; //显示一下 QString str = QString("接收%1传来的文件%2成功").arg(recvOtherPathName).arg(recvfileName); QDateTime time = QDateTime::currentDateTime(); QString strtime = time.toString("yyyy-MM-dd hh:mm:ss"); ui->msgRead->setTextColor(QColor(Qt::red)); //变成灰色字体 ui->msgRead->append(QString("[%1]%2").arg(strtime).arg(str)); } } } //上线函数 void MainWindow::link() { QString str = "BBBB"+myNickname; tcpSocket->write(str.toUtf8().data()); } //下线函数 void MainWindow::unlink() { QString str = "CCCC"+myNickname; tcpSocket->write(str.toUtf8().data()); } //发送文件点击 void MainWindow::on_pushButton_sendpath_clicked() { if(haveOtherName == true) { QString filePath = QFileDialog::getOpenFileName(this,"open","../"); if(false == filePath.isEmpty()) { sendfileName.clear(); sendfile