Qt实现telnet服务【记录】
最近在做关于FlightGear的一个指令控制的研究，由于每次都需要手动从cmd跳到telnet中，所以实现拿Qt实现一个telnet功能的小模块。
目录
-
- FlightGear(开源)
- 源码
-
- 项目结构
- Pro配置文件
- mainWindow类
- qttelnet类
- 效果图
- Error：'telnet' 不是内部或外部命令，也不是可运行的程序或批处理文件。
- 编译报错：No such file or directory #include "qttelnet.moc"
FlightGear(开源)
FlightGear是一款开源飞行模拟器。项目始于1997年，主要目标是为学术科研领域创造一个尖端的飞行模拟器框架，也可拓展到飞行训练，飞行仿真，模拟飞行游戏等方面。
它支持全球三维实景，20,000多个跑道、400多种飞行器、跨平台、多人联飞、多样的开放飞行数据模型等功能。重点这是开源的。
源码
项目结构
Pro配置文件
在*.pro文件中需要添加
QT += network
win32
{
LIBS +=-lws2_32
}
mainWindow类
mainWindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include mainWindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
telnet = new QtTelnet(this);
connect(telnet, SIGNAL(message(const QString &)),this, SLOT(telnetMessage(const QString &)));
connect(telnet, SIGNAL(loginRequired()),this, SLOT(telnetLoginRequired()));
connect(telnet, SIGNAL(loginFailed()),this, SLOT(telnetLoginFailed()));
connect(telnet, SIGNAL(loggedOut()),this, SLOT(telnetLoggedOut()));
connect(telnet, SIGNAL(loggedIn()),this, SLOT(telnetLoggedIn()));
connect(telnet, SIGNAL(connectionError(QAbstractSocket::SocketError)),
this, SLOT(telnetConnectionError(QAbstractSocket::SocketError)));
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::telnetMessage(const QString &msg)
{
ui->te_Msg->append(msg);
}
void MainWindow::telnetLoginRequired()
{
QString user = ui->le_User->text();
QString passwd = ui->le_Passwd->text();
if(user == "" || passwd == "")
{
ui->te_Msg->append("用户名和密码不能为空!");
return;
}
telnet->login(user,passwd); // 登入telnet
// telnet->logout(); // 登出
}
void MainWindow::telnetLoginFailed()
{
ui->te_Msg->append("登录失败!");
}
void MainWindow::telnetLoggedOut()
{
ui->te_Msg->append("登出成功!");
}
void MainWindow::telnetLoggedIn()
{
ui->te_Msg->append("登录成功!");
}
void MainWindow::telnetConnectionError(QAbstractSocket::SocketError error)
{
ui->te_Msg->append(QString("连接错误: %1").arg(error));
}
void MainWindow::on_pb_Link_clicked()
{
QString host = ui->le_Host->text();
if(host == "")
{
ui->te_Msg->append("IP地址不能为空!");
return ;
}
telnet->connectToHost(host);
}
void MainWindow::on_pb_close_clicked()
{
telnet->close();
}
void MainWindow::on_pb_Send_clicked()
{
QString cmd = ui->le_SendText->text() + "\r\n" ;
telnet->sendData(cmd);
}
mainWindow.ui
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>MainWindow</class>
<widget class="QMainWindow" name="MainWindow">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>713</width>
<height>483</height>
</rect>
</property>
<property name="windowTitle">
<string>Telnet客户端</string>
</property>
<widget class="QWidget" name="centralWidget">
<layout class="QGridLayout" name="gridLayout">
<item row="0" column="0">
<widget class="QLabel" name="label">
<property name="text">
<string>IP地址：</string>
</property>
</widget>
</item>
<item row="0" column="1">
<widget class="QLineEdit" name="le_Host"/>
</item>
<item row="0" column="2">
<widget class="QLabel" name="label_2">
<property name="text">
<string>用户名：</string>
</property>
</widget>
</item>
<item row="0" column="3">
<widget class="QLineEdit" name="le_User"/>
</item>
<item row="0" column="4">
<widget class="QLabel" name="label_3">
<property name="text">
<string>密码：</string>
</property>
</widget>
</item>
<item row="0" column="5">
<widget class="QLineEdit" name="le_Passwd"/>
</item>
<item row="0" column="6">
<widget class="QPushButton" name="pb_Link">
<property name="text">
<string>连接</string>
</property>
</widget>
</item>
<item row="0" column="7">
<widget class="QPushButton" name="pb_close">
<property name="text">
<string>断开</string>
</property>
</widget>
</item>
<item row="1" column="0" colspan="8">
<widget class="QTextEdit" name="te_Msg"/>
</item>
<item row="2" column="7">
<widget class="QPushButton" name="pb_Send">
<property name="text">
<string>发送</string>
</property>
</widget>
</item>
<item row="2" column="0" colspan="7">
<widget class="QLineEdit" name="le_SendText"/>
</item>
</layout>
</widget>
</widget>
<layoutdefault spacing="6" margin="11"/>
<resources/>
<connections/>
</ui>
qttelnet类
qttelnet.h
/****************************************************************************
**
** This file is part of a Qt Solutions component.
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Qt Software Information ([email protected])
**
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Solutions Commercial License Agreement provided
** with the Software or, alternatively, in accordance with the terms
** contained in a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** Please note Third Party Software included with Qt Solutions may impose
** additional restrictions and it is the user's responsibility to ensure
** that they have met the licensing requirements of the GPL, LGPL, or Qt
** Solutions Commercial license and the relevant license of the Third
** Party Software they are using.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at [email protected].
**
****************************************************************************/
#ifndef QTTELNET_H
#define QTTELNET_H
#include qttelnet.cpp
/****************************************************************************
**
** This file is part of a Qt Solutions component.
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Qt Software Information ([email protected])
**
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Solutions Commercial License Agreement provided
** with the Software or, alternatively, in accordance with the terms
** contained in a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** Please note Third Party Software included with Qt Solutions may impose
** additional restrictions and it is the user's responsibility to ensure
** that they have met the licensing requirements of the GPL, LGPL, or Qt
** Solutions Commercial license and the relevant license of the Third
** Party Software they are using.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at [email protected].
**
****************************************************************************/
/*!
\class QtTelnet
\brief The QtTelnet class proveds an API to connect to Telnet servers,
issue commands and receive replies.
When a QtTelnet object has been created, you need to call
connectToHost() to establish a connection with a Telnet server.
When the connection is established the connected() signal is
emitted. At this point you should call login(). The
QtTelnet object will emit connectionError() if the connection
fails, and authenticationFailed() if the login() failed.
Once the connection has been successfully established and
you've logged in you can send control messages using sendControl()
and data using sendData(). Connect to the message() signal to
receive data from the Telnet server. The connection is closed with
close().
You can use your own socket if you call setSocket() before
connecting. The socket used by QtTelnet is available from
socket().
*/
#include "qttelnet.h"
#include 效果图
Error：‘telnet’ 不是内部或外部命令，也不是可运行的程序或批处理文件。
这个方法能解决大多数情况。一般是Windows默认未开启Tenlnet Client。需要我们手动开启。
Step1：打开控制面板
Step2：点程序
Step3：点启动或关闭Windows功能
Step4：找到Telnet Client 并勾上。
执行完以上步骤在启动cmd执行telnet IP命令就可以识别了。（我这是因为端口没开启，FlightGear在公司电脑上，我这个电脑没有，所以这里演示了）
编译报错：No such file or directory #include “qttelnet.moc”
这是因为你在构建项目时选择了构建目录，导致找不到qttelnet.mocl了。
在QtCeater右侧点击项目进入下面图片这个界面将shadow build的勾去掉等待项目更新。重写生成即可。
