基于TCP通讯的局域网内聊天（qt实现）

#include "tcpclient.h" #include "ui_tcpclient.h" #include <QMessageBox> TcpClient::TcpClient(QWidget *parent) : QWidget(parent), ui(new Ui::TcpClient) { ui->setupUi(this); QFont font("ZYSong18030",12); this->setFont(font); this->setWindowTitle(tr("TCP Client")); connect(ui->pushButtonSend,SIGNAL(clicked()),this,SLOT(slotSend()));//发送信息 connect(ui->pushButtonEnter,SIGNAL(clicked()),this,SLOT(slotEnter()));//发送数据 serverIP = new QHostAddress();//服务器 port = 8010; ui->lineEditPort->setText(QString::number(port)); ui->pushButtonSend->setEnabled(false); status = false; } TcpClient::~TcpClient() { delete ui; } void TcpClient::slotEnter()//进入聊天室的条件判断 { if(! status) { QString ip = ui->lineEditServerIP->text(); //获取服务器ip if(!serverIP->setAddress(ip)) //设置服务器ip { QMessageBox::information(this,tr("error"),tr("server ip address error!")); return; } if(ui->lineEditUser->text() == "") { QMessageBox::information(this,tr("error"),tr("user name error!")); return; } userName = ui->lineEditUser->text(); //获取用户名 tcpSocket = new QTcpSocket(this); connect(tcpSocket,SIGNAL(connected()),this,SLOT(slotConnected())); connect(tcpSocket,SIGNAL(disconnected()),this,SLOT(slotDisconnected())); connect(tcpSocket,SIGNAL(readyRead()),this,SLOT(dataReceived())); tcpSocket->connectToHost(*serverIP,port); //连接服务器 status = true; } else//离开聊天室 { int length = 0; QString msg = userName + tr(":leave char room"); length = tcpSocket->write(msg.toLatin1(),msg.length()); if(length != msg.length()) { return; } tcpSocket->disconnectFromHost(); status = false; } } void TcpClient::slotConnected() { int length = 0; ui->pushButtonSend->setEnabled(true); ui->pushButtonEnter->setText(tr("离开聊天室")); QString msg = userName + tr("enter char room"); length = tcpSocket->write(msg.toLatin1(),msg.length()); if(length != msg.length()) { return; } } void TcpClient::slotDisconnected() { ui->pushButtonSend->setEnabled(false); ui->pushButtonEnter->setText(tr("进入聊天室")); } void TcpClient::slotSend() //发送信息 { if(ui->lineEditSend->text() == "") { return; } QString msg = userName + ":" + ui->lineEditSend->text();//将用户名和内容发送服务器 tcpSocket->write(msg.toLatin1(),msg.length()); ui->lineEditSend->clear(); } void TcpClient::dataReceived() { while(tcpSocket->bytesAvailable() > 0) //一直等待数据发送过来 判断套接字内容是否有数据 { QByteArray datagram; datagram.resize(tcpSocket->bytesAvailable()); tcpSocket->read(datagram.data(),datagram.size()); //读报文数据和大小 QString msg = datagram.data(); ui->listWidgetContent->addItem(msg.left(datagram.size())); } }