一个定时重启的小程序

今天有个朋友找我问有没有一些能像Windows一样计划任务重启的软件，我也不清楚。他它说能让我做一个给他它么？我考虑了一下，他的服务器都是有安装.NET框架的，那可以用.NET来使下~~！

原理我像大家都很清楚，这里只说.NET（c#实现）。服务器每次启动或者重启，都是没登陆的。那意味着启动项里不只能做，我就考虑到使用Windows服务。Windows服务在系统加载时候就会启动所有服务，把程序写进里面应该没错了。
需要重启，那就要一个时间来效验，写法都有很多。我这里采用ini来存放。

Time 记录要重启的时间，验证时间。
Day 用来累加天数。

 

[Reboot]
Time=02:02:01
Day=3

使用System.Timers.Timer循环验证时间（不知道始终对占用资源是否会太大）

 

        private void Timer_Elapsed(object sender, ElapsedEventArgs e)
        {
            if (DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") == retime)
            {
                Shoutdown.DoExitWin(0x00000002);
            }
        }

服务首次启动初始化重启的时间以及天数,初始化时候读取ini文件，把时间放进变量里，将天数累加3天。（减少读写I/O的开销）
始终不停的循环验证。

 

 protected override void OnStart(string[] args)
  {
            ini = new IniFile(AppDomain.CurrentDomain.BaseDirectory + "Current.ini");
            time = ini.IniReadValue("Reboot", "Time");
            day = ini.IniReadValue("Reboot", "Day");

            retime = DateTime.Now.AddDays(double.Parse(day)).ToString("yyyy-MM-dd ") + time;

            autoTimer.AutoReset = true;
            autoTimer.Enabled = true;
            autoTimer.Elapsed += Timer_Elapsed;
            autoTimer.Start();
  }

这里可以改造成用线程来做，我想应该比这个会好。

放出一段自动备份SQLSERVER的代码端，将后会发布。
        private readonly Dictionary<string, bool> cache =
            new Dictionary<string, bool>();

        private readonly IniFile ini = new IniFile(SysUtil.GetMapPath("Task.ini"));
        private bool _flag;
        private string day;
        private string fHour;
        private string fWeek;
        private string hour;
        private Thread timeThread;


        protected override void OnStart(string[] args)
        {
            Go();
        }

        protected override void OnStop()
        {
            StopThread();
        }

        /// <summary>
        /// 执行
        /// </summary>
        public void Go()
        {
            day = DateTime.Now.ToString("yyyy-MM-dd");
            fWeek = ini.IniReadValue("Task", "Week");
            fHour = ini.IniReadValue("Task", "Hour");
            RunThread();
        }

        /// <summary>
        /// 执行线程
        /// </summary>
        private void RunThread()
        {
            //这里开始线程   
            _flag = true;
            timeThread = new Thread(ThreadTimer);
            timeThread.Start();
        }

        /// <summary>
        /// 停止线程
        /// </summary>
        private void StopThread()
        {
            _flag = false;
            if (timeThread != null) timeThread.Abort();
        }

        /// <summary>
        /// 线程方法
        /// </summary>
        public void ThreadTimer()
        {
            while (_flag)
            {
                if (fWeek == "") //按天
                {
                    RunBackup();
                }
                else
                {
                    // 按周
                    if (WeekSwitch(fWeek) == DateUtil.getWeek(DateTime.Now) && WeekSwitch(fWeek) != "")
                    {
                        RunBackup();
                    }
                }
            }
        }

        /// <summary>
        /// 数据库列表
        /// </summary>
        private DataTable GetTaskList()
        {
            DataSet ds = new DataSet();
            ds.ReadXml(SysUtil.GetMapPath("Db.xml"));
            return ds.Tables["DataSet"];
        }

        private void RunBackup()
        {
            if (!File.Exists(SysUtil.GetMapPath("Db.xml"))) return;

            day = DateTime.Now.ToString("yyyy-MM-dd");

            hour = DateTime.Now.ToString("HH");
            if (hour.Equals(fHour))
            {
                if (!cache.ContainsKey(day)) cache.Add(day, false);

                if (fWeek != "" && cache[day] == false)
                {
                    if (WeekSwitch(fWeek) == DateUtil.getWeek(DateTime.Parse(day)))
                    {
                        StartWork();
                        cache[day] = true;
                    }
                }
                else
                {
                    if (cache[day] == false)
                    {
                        StartWork();
                        cache[day] = true;
                    }
                }
            }

private readonly Dictionary<string, bool> cache =
            new Dictionary<string, bool>();

        private readonly IniFile ini = new IniFile(SysUtil.GetMapPath("Task.ini"));
        private bool _flag;
        private string day;
        private string fHour;
        private string fWeek;
        private string hour;
        private Thread timeThread;


        protected override void OnStart(string[] args)
        {
            Go();
        }

        protected override void OnStop()
        {
            StopThread();
        }

        /// <summary>
        /// 执行
        /// </summary>
        public void Go()
        {
            day = DateTime.Now.ToString("yyyy-MM-dd");
            fWeek = ini.IniReadValue("Task", "Week");
            fHour = ini.IniReadValue("Task", "Hour");
            RunThread();
        }

        /// <summary>
        /// 执行线程
        /// </summary>
        private void RunThread()
        {
            //这里开始线程   
            _flag = true;
            timeThread = new Thread(ThreadTimer);
            timeThread.Priority = ThreadPriority.Lowest;//设置线程优先级降低系统资源占用
            timeThread.Start();
        }

        /// <summary>
        /// 停止线程
        /// </summary>
        private void StopThread()
        {
            _flag = false;
            if (timeThread != null) timeThread.Abort();
        }

        /// <summary>
        /// 线程方法
        /// </summary>
        public void ThreadTimer()
        {
            while (_flag)
            {
                Thread.Sleep(1000);//线程阻塞，这样可以降低系统资源占用
                if (fWeek == "") //按天
                {
                    RunBackup();
                }
                else
                {
                    // 按周
                    if (WeekSwitch(fWeek) == DateUtil.getWeek(DateTime.Now) && WeekSwitch(fWeek) != "")
                    {
                        RunBackup();
                    }
                }
            }
        }

        /// <summary>
        /// 数据库列表
        /// </summary>
        private DataTable GetTaskList()
        {
            DataSet ds = new DataSet();
            ds.ReadXml(SysUtil.GetMapPath("Db.xml"));
            return ds.Tables["DataSet"];
        }

        private void RunBackup()
        {
            day = DateTime.Now.ToString("yyyy-MM-dd");
            hour = DateTime.Now.ToString("HH");
            if (hour.Equals(fHour))
            {
                if (!cache.ContainsKey(day)) cache.Add(day, false);

                if (fWeek != "" && cache[day] == false)
                {
                    if (WeekSwitch(fWeek) == DateUtil.getWeek(DateTime.Parse(day)))
                    {
                        Console.Write("Execute");
                        //if (!File.Exists(SysUtil.GetMapPath("Db.xml"))) return;
                        //StartWork();
                        //cache[day] = true;
                    }
                }
                else
                {
                    if (cache[day] == false)
                    {
                        Console.Write("Execute");
                        //if (!File.Exists(SysUtil.GetMapPath("Db.xml"))) return;
                        //StartWork();
                        //cache[day] = true;
                    }
                }
            }
        }

到这里基本的任务已经完成，代码没有适当的优化。还有一个不完善的GUI管理工具。

Reboot

（小弟重建博客的第一次发表文章，有望高手指点以及留下您的批评。）