想到倒计时,定时任务,大家首先想到的肯定就是定时器,定时器在web和winfrom程序中也有着很大的作用。本文也将为大家介绍Quartzs定时器的简单使用。需要的朋友可以参考一下
前言
首先想到倒计时,定时任务。大家想到的肯定就是定时器。那么定时器在web和winfrom程序中有着很大的作用。那在服务器端有没有像定时器一样的存在呢。
有了这些需求,我找到了第三方的组件 Quartz.Net 来实现(源码位置)
实现步骤
(1)第一步,通过NuGet下载Quartz.Net组件并且引用到当前工程中
(2)创建两个类,一个是操作类,一个类继承IJob 并且需要实现IJob的方法。
/// <summary>
/// 操作类
/// </summary>
public class Operation : BaseBusiness<Auction>
{
#region 实例化
public Operation()
{
_options = new Options();
}
internal IOptions _options { get; }
#endregion
public static IScheduler scheduler;
public static ISchedulerFactory factory;
/// <summary>
/// 获取cron表达式
/// </summary>
/// <param name="time">时间</param>
/// <returns></returns>
public string GetCron(DateTime? time)
{
var txt = Convert.ToDateTime(time).ToString("yyyy-MM-dd-HH-mm-ss");
var arr = txt.Split('-');
var result = string.Format("{0} {1} {2} {3} {4} ? {5}", arr[5], arr[4], arr[3], arr[2], arr[1], arr[0]);
return result;
}
/// <summary>
/// 删除job
/// </summary>
/// <param name="Id">拍卖数据对象主键</param>
/// <param name="GroupName">job的组名</param>
public void RemoveJob(string Id, string MarkGoodsId, string GroupName)
{
//var jobKey = new JobKey(GroupName + Id + MId + "j", GroupName);
var job = new JobKey(GroupName + Id + MarkGoodsId + "j", GroupName);
scheduler.DeleteJob(job);
}
//清楚所有定时任务
public void ClearJob()
{
if (scheduler != null)
{
scheduler.Clear();
}
}
}
public class SetAuctionings : Operation, IJob
{
public async Task Execute(IJobExecutionContext context)
{
await Task.Run(() =>
{
DateTime freeTime = context.JobDetail.JobDataMap.GetDateTime("FreeTime");
var now = DateTime.Now;
//记录两个时间的差
var days = freeTime.Subtract(now).Days;
var hours = freeTime.Subtract(now).Hours;
var minutes = freeTime.Subtract(now).Minutes;
var seconds = freeTime.Subtract(now).Seconds;
var result = days + "天" + hours + "时" + minutes + "分" + seconds + "秒";
//推送倒计时
PushHelper.AuctionCountDown(markId, days, hours, minutes, seconds);
//getTriggerState
});
}
/// <summary>
/// 设置定时任务
/// </summary>
/// <param name="Id">标的ID</param>
public void AddQz(DateTime BeginTime, DateTime FreeTime)
{
var GroupName = _options.GetPKById<Options_AuctionState>("1316283839361847296").ToString();
factory = new StdSchedulerFactory();
scheduler = factory.GetScheduler().Result;
var jobKey = new JobKey(GroupName + Id + MId + "j", GroupName);
var GjobDetail = scheduler.GetJobDetail(jobKey);
if (GjobDetail != null)
{
//删除任务
scheduler.DeleteJob(jobKey);
}
//设置Job StatefulJob
var job = JobBuilder.Create<SetAuctionings>()
.WithIdentity(GroupName + Id + MId + "j", GroupName)
.Build();
job.JobDataMap.Put("FreeTime", FreeTime);
//【方法1】 设置每秒执行
ITrigger trigger = TriggerBuilder.Create()
.WithIdentity(GroupName + Id + MId + "t", GroupName)
.WithSimpleSchedule(x => x.WithIntervalInSeconds(1)
.RepeatForever())
.StartAt(new DateTimeOffset(BeginTime))
.EndAt(new DateTimeOffset(FreeTime))
.Build();
//【方法2】
//var ExecSs = "0/1 * * * * ?";
//ITrigger trigger = TriggerBuilder.Create()
// .WithIdentity(GroupName + Id + MeetingPlace + "t", GroupName)
// .WithCronSchedule(ExecSs)
// .StartAt(new DateTimeOffset(BeginTime))
// .EndAt(new DateTimeOffset(FreeTime))
// .Build();
scheduler.ScheduleJob(job, trigger);
}
}
以上是一个简单的封装,可以根据这个倒计时的推送。增加一些封装 如:暂停,恢复,结束,更新等。
调用的话只需要简单的实例化一下进行调用。
然后我在大概说下其他封装的思路和代码片段;
延时倒计时:
根据传过来的参数时间进行一个修改,删除之前的任务重新开始一个任务;
/// <summary>
/// 【拍卖延时】修改倒计时任务
/// </summary>
/// <param name="Id"></param>
/// <param name="MeetingPlace"></param>
/// <param name="FreeTime"></param>
public void UpdateQz(String Id, string Mid, DateTime FreeTime, DateTime LimitTime)
{
//scheduler = factory.GetScheduler().Result;
//if (scheduler == null)
// return;
//拍卖进行中
var GroupName = _options.GetPKById<Options_AuctionState>("1316283839361847296").ToString();
var jobKey = new JobKey(GroupName + Id + Mid + "j", GroupName);
var GjobDetail = scheduler.GetJobDetail(jobKey);
if (GjobDetail.Result == null)
return;
var triggerKey = new TriggerKey(GroupName + Id + Mid + "t", GroupName);
var triggerr = scheduler.GetTrigger(triggerKey);
var triggerBuilder = triggerr.Result.GetTriggerBuilder();
//修改结束时间 WithCronSchedule(ExecSs).
ITrigger newTrigger = triggerBuilder.EndAt(new DateTimeOffset(FreeTime)).Build();
var job = GjobDetail.Result;
job.JobDataMap.Put("AuctionId", Id);
job.JobDataMap.Put("MarkId", Mid);
job.JobDataMap.Put("FreeTime", FreeTime);
job.JobDataMap.Put("LimitTime", LimitTime);
//删除任务
scheduler.DeleteJob(jobKey);
scheduler.ScheduleJob(job, newTrigger);
//修改最终结束的定时任务;
SetAuctioneds setAuctioneds = new SetAuctioneds();
setAuctioneds.SetEndQz(Id, FreeTime, Mid);
}
倒计时暂停:
调用组件的PauseTrigger方法可以进行暂停;
/// <summary>
/// 倒计时暂停
/// </summary>
public AjaxResult StopQz(string Id, string MId)
{
try
{
//方法1
//拍卖进行中
var GroupName = _options.GetPKById<Options_AuctionState>("1316283839361847296").ToString();
var mark = Service.GetIQueryable<MarkGoods>().FirstOrDefault(x => x.Id == MId);
if (mark == null)
return Error("找不到标的!");
//获取实际结束时间。
var subEndTime = mark.EndTime.Value;
//计算暂停后剩余的时间 = audEndTime(结束时间) - 当前时间
var nowEndTime = DateTime.Now;
var DifferTime = subEndTime.Subtract(nowEndTime);
//追加 剩余时间 和 当前结束时间;
mark.SurplusTime = DifferTime.ToString();
//mark.EndTime = nowEndTime;
//GroupName + Id + MId + "t", GroupName
var TriKey = new TriggerKey(GroupName + Id + MId + "t", GroupName);
var Result = scheduler.GetTriggerState(TriKey).Result;
if (Result == TriggerState.None)
{
return Error("失败:不存在此任务!");
}
if (Result == TriggerState.Paused)//暂停
{
return Success("失败:该任务已暂停!");
}
else
{
scheduler.PauseTrigger(TriKey);
mark.AucTimeStatus = 2;
Service.UpdateAny<MarkGoods>(mark, new List<string> { "SurplusTime", "AucTimeStatus" });
return Success("成功:任务已暂停");
}
//方法2
//var mark = Service.GetIQueryable<MarkGoods>().FirstOrDefault(x => x.Id == MId);
//if (mark == null)
// return;
////获取实际结束时间。
//var subEndTime = mark.EndTime.Value;
////计算暂停后剩余的时间 = audEndTime(结束时间) - 当前时间
//var nowEndTime = DateTime.Now;
//var DifferTime = subEndTime.Subtract(nowEndTime);
////追加 剩余时间 和 当前结束时间;
//mark.SurplusTime = DifferTime.ToString();
////mark.EndTime = nowEndTime;
//Service.UpdateAny<MarkGoods>(mark, new List<string> { "SurplusTime" });
////拍卖进行中
//var GroupName = _options.GetPKById<Options_AuctionState>("1316283839361847296").ToString();
////关闭该定时器
//RemoveJob(mark.AuctionId, mark.Id, GroupName);
}
catch (Exception)
{
throw;
}
}
倒计时恢复:
俗话说得好破镜难圆,泼出去的水很难收回来。恢复也是这个道理,比如:倒计时走到了7暂停,那么恢复的时候如何从7继续呢。这里就牵扯到了时间戳并且存入数据库的介入了。
/// <summary>
/// 恢复倒计时
/// </summary>
public AjaxResult ReturnQz(string Id, string MId)
{
try
{
var mark = Service.GetIQueryable<MarkGoods>().FirstOrDefault(x => x.Id == MId);
if (mark == null)
return Error();
//获取实际结束时间。
if (mark.SurplusTime.IsNullOrEmpty())
{
return Error();
}
TimeSpan.TryParse(mark.SurplusTime, out TimeSpan surplusTime);
//方法1
//拍卖进行中
//拍卖进行中
var GroupName = _options.GetPKById<Options_AuctionState>("1316283839361847296").ToString();
var TriKey = new TriggerKey(GroupName + Id + MId + "t", GroupName);
var Result = scheduler.GetTriggerState(TriKey).Result;
if (Result == TriggerState.None)
{
return Error("失败:不存在此任务!");
}
if (Result == TriggerState.Normal)//暂停
{
return Error("失败:任务正在进行,无需恢复!");
}
else
{
//结束时间 = 当前时间 + 剩余时间
var endTime = DateTime.Now.Add(surplusTime);
//获取限时竞价时间
var LimitTime = endTime.AddHours(-mark.LimitHH.Value).AddMinutes(-mark.LimitMM.Value).AddSeconds(-mark.LimitSS.Value);
//修改倒计时任务;
UpdateQz(mark.AuctionId, mark.Id, endTime, LimitTime);
//追加 剩余时间 和 当前结束时间;
mark.SurplusTime = "";
mark.EndTime = endTime;
var C1 = endTime.Subtract(DateTime.Now);
var C2 = endTime.Subtract(LimitTime);
if (C1 > C2)
mark.AucTimeStatus = 0;
else
mark.AucTimeStatus = 1;
Service.UpdateAny<MarkGoods>(mark, new List<string> { "SurplusTime", "EndTime", "AucTimeStatus" });
return Success();
}
//方法2
//var mark = Service.GetIQueryable<MarkGoods>().FirstOrDefault(x => x.Id == MId);
//if (mark == null)
// return;
////获取实际结束时间。
//if (mark.SurplusTime.IsNullOrEmpty())
//{
// return;
/
本文标题为:C# Quartzs定时器的使用教程
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