用qt写一个多客户端连接服务端的代码

好的，以下是可以给您提供参考的Qt代码：

// Server端代码
#include <QTcpServer>
#include <QTcpSocket>

QTcpServer *server;
QList<QTcpSocket *> clients;

void newConnection()
{
QTcpSocket *client = server->nextPendingConnection();
clients.append(client);

connect(client, &QTcpSocket::readyRead, [client]() {
QByteArray data = client->readAll();
// 处理客户端发送的数据
});

connect(client, &QTcpSocket::disconnected, [client]() {
clients.removeOne(client);
client->deleteLater();
});
}

int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);

server = new QTcpServer(&app);

if (!server->listen(QHostAddress::Any, 1234)) {
qWarning() << "Failed to start server:" << server->errorString();
return 1;
} else {
qDebug() << "Server started!";
}

connect(server, &QTcpServer::newConnection, newConnection);

return app.exec();
}

// Client端代码
#include <QTcpSocket>

QTcpSocket *socket;

void connected()
{
qDebug() << "Connected to server!";
}

void disconnected()
{
qDebug() << "Disconnected from server!";
}

void readyRead()
{
QByteArray data = socket->readAll();
// 处理从服务器接收到的数据
}

int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);

socket = new QTcpSocket(&app);

connect(socket, &QTcpSocket::connected, connected);
connect(socket, &QTcpSocket::disconnected, disconnected);
connect(socket, &QTcpSocket::readyRead, readyRead);

socket->connectToHost("127.0.0.1", 1234);

return app.exec();
}

希望能帮到您！