feat: 增加数据回复功能

mainwindow.cpp

@@ -61,4 +61,10 @@ void MainWindow::read_data()
     QByteArray data = socket->readAll();
     QString str = data.data();
     ui->pte_info->append(str);
+    str = "收到数据：" + str;
+    // std::cout << str.toStdString() << std::endl;
+    QByteArray data1 = str.toUtf8();
+    socket->write(data1);
+
+
 }