先上效果图
1. 图中样式我采用了qss 总体设计, 然后对每个按钮进行单个设计
2. 使用 "控件提升", 为列表添加删除功能
2. 客户端可以监视多个客户端, 可以群发和单发
3. 输入框使用 "eventFilter" , 来使用 "回车" 发送消息
一、 服务器端
1. 在 .pro 文件中添加 QT += core gui network
2. 定义:
private:
Ui::MainWindow *ui;
QTcpSocket * tcpClientSocket; // 客户端套接字
QTcpServer * tcpServer; // 服务器端对象
QList clientList; // 用户连接表
3 . new 出tcpServer . 添加信号和槽: connect(tcpServer,SIGNAL(newConnection()),this,SLOT(newConnectClient()));
tcpServer = new QTcpServer(this);
ui->server_ip->setText(get_localmachine_ip()); // 获取本机的IP地址
ui->port_lineEdit->setText(tr("666"));
connect(tcpServer,SIGNAL(newConnection()),this,SLOT(newConnectClient())); // 新建连接
4. newConnectClient函数用来保存新的连接, 并添加"读"和"断开" 的处理函数
void MainWindow::newConnectClient()
{
tcpClientSocket = tcpServer->nextPendingConnection(); //获取网络套接字
clientList.append(tcpClientSocket); // 保存连接的Socket
QString strIP =tr("%1 : %2").arg(tcpClientSocket->peerAddress().toString().split("::ffff:")[1]).arg(
tcpClientSocket->peerPort()); // 拼接字符串
ui->connect_listWidget->addItem(strIP);
ui->IP_comboBox->addItem(strIP);
connect(tcpClientSocket,SIGNAL(readyRead()),this,SLOT(readData())); // 读取客户端发送的信息
connect(tcpClientSocket,SIGNAL(error(QAbstractSocket::SocketError)),\
this,SLOT(readError(QAbstractSocket::SocetError)));
connect(tcpClientSocket,SIGNAL(disconnected()),this,SLOT(disconnectedSlot())); // 断开连接
}
5. 点击监听按钮,开始监听客户端的请求:
try {
bool ok = tcpServer->listen(QHostAddress::Any,ui->port_lineEdit->text().toInt());
if(ok)
{
ui->statusBar->showMessage("开始监听");
ui->connect_Button->setText("断开");
ui->connect_Button->setStyleSheet("QPushButton{background-color: rgb(124, 200, 78);color:red;}"
"QPushButton:pressed{background-color:rgb(85, 170, 255); color:red;}");
}
} catch(QAbstractSocket::SocketError e){
readError(e);
}
6. 读取数据使用
void MainWindow::readData()
{
foreach(QTcpSocket *socket, clientList){
QByteArray data = socket->readAll();
if(!data.isEmpty())
{
ui->show_textEdit->append(QString(data));
}
}
}
7. 发送数据
// 发送
void MainWindow::on_send_button_clicked()
{
QString data = ui->send_textEdit->toPlainText();
if (!data.isEmpty())
{
if (!ui->IP_comboBox->currentText().isEmpty())
{
// qDebug() <IP_comboBox->currentText();
// qDebug() << ui->IP_comboBox->itemText(0);
// qDebug() << ui->IP_comboBox->currentIndex();
QString clientIP = ui->IP_comboBox->currentText().split(":")[0].trimmed();
int clientPort = ui->IP_comboBox->currentText().split(":")
[1].trimmed().toInt();
// qDebug() << "ip " <isValid())
{
if (socket->peerAddress().toString().split("::ffff:")[1] == clientIP &&
socket->peerPort() == clientPort)
{
int sendRe = socket->write(data.toUtf8().data());
ui->send_textEdit->clear();
}
}
}
}
}
}
二、客户端:
1. 定义socket
private:
Ui::MainWindow *ui;
QTcpSocket *clientSocket;
2. 设置要连接的服务器IP和端口
this->setWindowTitle(tr("客户端"));
this->setFixedSize(750,600);
ui->statusBar->showMessage(tr("未连接服务器"));
ui->server_ip->setText("192.168.1.3");
ui->port_lineEdit->setText("666");
3. 连接服务器, 注意ip地址需要用 “QHostAddress” 进行转换, 直接用ip无法连接 , 连接成功添加 “读” 和“删除” 信号
if (ui->connect_Button->text() == "连接")
{
this->clientSocket = new QTcpSocket(this);
QString ip = ui->server_ip->text().trimmed();
QHostAddress * addtress = new QHostAddress;
addtress->setAddress(ip);
short port = ui->port_lineEdit->text().toShort();
this->clientSocket->connectToHost(*addtress,port);
connect(clientSocket,SIGNAL(readyRead()),this,SLOT(readyReadSlot()));
connect(clientSocket,SIGNAL(disconnected()),this,SLOT(disconnectedSlots()));
}
4. 读取和发送和服务器一样
源码地址: https://download.csdn.net/download/chen1231985111/10872106