国庆作业5

QT实现TCP服务器客户端的搭建

服务器代码：

#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    server = new QTcpServer(this);
    connect(server,&QTcpServer::newConnection,this,&Widget::newConnection_slot);
}

Widget::~Widget()
{
    delete ui;
}

//启动按钮的槽函数
void Widget::on_startBtn_clicked()
{
    quint16 port=ui->portEdit->text().toUInt();
    if(server->listen(QHostAddress::Any,port))
    {
        QMessageBox::information(this,"失败","监听失败");
        return ;
    }else
    {
        QMessageBox::information(this,"成功","服务器监听成功");
        return ;
    }
}
void Widget::newConnection_slot()
{
    qDebug()<<"您有新的客户端请求";
    QTcpSocket *s=server->nextPendingConnection();
    clientList.push_back(s);
    connect(s,&QTcpSocket::readyRead,this,& Widget::readyRead_slot);
}
void Widget::readyRead_slot()
{
    qDebug("有新消息发来了");
    for(int i=0;istate()==0)
        {
            clientList.removeAt(i);
        }
    }
    for(int i=0;ibytesAvailable()!=0)
        {
            QByteArray msg=clientList[i]->readAll();
            ui->msgWidget->addItem(QString::fromLocal8Bit(msg));
            for(int j=0;jwrite(msg);
            }
        }
    }
}

客户端代码：

#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    socket =new QTcpSocket(this);
    connect(socket,&QTcpSocket::connected,this,&Widget::connected_slot);
    connect(socket,&QTcpSocket::readyRead,this,&Widget::readyRead_slot);
    connect(socket,&QTcpSocket::disconnected,this,&Widget::disconnected_slot);
}

Widget::~Widget()
{
    delete ui;
}

//连接服务器按钮
void Widget::on_connectBtn_clicked()
{
    userName =ui->userNameEdit->text();
    QString ip=ui->ipEdit->text();
    quint16 port = ui->portEdit->text().toUInt();
    socket->connectToHost(ip,port);
}

void Widget::connected_slot()
{
    QMessageBox::information(this,"成功","您已经成功进入聊天室");
    QString msg=userName + ":进入聊天室";
    socket->write(msg.toLocal8Bit());
}

void Widget::readyRead_slot()
{
    QByteArray msg=socket->readAll();

    ui->msgWidget->addItem(QString::fromLocal8Bit(msg));
}

void Widget::on_sendBtn_clicked()
{
    QString msg=userName+":"+ui->msgedit->text();
    socket->write(msg.toLocal8Bit());
    ui->msgedit->clear();
}

void Widget::on_disconnectBtn_clicked()
{
    QString msg =userName+":我走了哈，我不打扰";
    socket->write(msg.toLocal8Bit());
    socket->disconnectFromHost();
}

void Widget::disconnected_slot()
{
    QMessageBox::information(this,"提示","退出成功");
}