现在用视觉开始执行石英计划，间隔24小时

我创建了一个爬虫，它从我之前定义的其他网站获取新闻，因此我使用quartz在后台运行任务。计划定义如下：

 public class JobBackground : IJob { public void Execute(IJobExecutionContext context) { for (int j = 1; j <= 920; j++) { NewsRepository newsRepository = new NewsRepository(); GoyaAgent Goyaagent = new GoyaAgent(); Task<List> lst = Goyaagent.parsing("http://www.gooyait.com/page/"+j); List enresult = lst.Result; foreach (NewsContent newsContent in enresult) { News newnews = new News(); newnews.Subject = newsContent.Title; newnews.NewsDate = DateTime.Now; newnews.NewsBrief = newsContent.abs; newnews.NewsText = newsContent.Content; newnews.ShowOnSlide = "Yes"; newnews.GroupId = 1049; newnews.NewsImageSmall = newsContent.Img; newnews.NewsImageBig = newsContent.Img; newnews.Reference = newsContent.Url; newnews.UserId = "3"; newnews.Visible = "Yes"; newnews.ViewCounter = 0; newsRepository.Add(newnews); if (newsRepository.FindBy(i => i.Reference == newsContent.Url).Count() == 0) newsRepository.Save(); } } } } 

parsingfunction：

  public async Task<List> parsing(string newsArchive) { List lstResult = new List(); try { HttpClient http = new HttpClient(); var response = await http.GetByteArrayAsync(newsArchive); String source = Encoding.GetEncoding("utf-8").GetString(response, 0, response.Length - 1); source = WebUtility.HtmlDecode(source); HtmlDocument resultat = new HtmlDocument(); resultat.LoadHtml(source); List toftitle = resultat.DocumentNode.Descendants().Where (x => (x.Name == "div" && x.Attributes["class"] != null && x.Attributes["class"].Value.Contains("main-col"))).ToList(); var li = toftitle[0].Descendants().Where (x => (x.Name == "div" && x.Attributes["class"] != null && x.Attributes["class"].Value.Contains("base-box blog-post"))).ToList(); foreach (var item in li) { NewsContent newsContent = new NewsContent(); newsContent.Url = item.Descendants("a").ToList()[0].GetAttributeValue("href", null); newsContent.Img = item.Descendants("img").ToList()[0].GetAttributeValue("src", null); newsContent.Title = item.Descendants("h2").ToList()[0].InnerText; newsContent.abs = item.Descendants("p").ToList()[0].InnerText; //finding main news content var response1 = await http.GetByteArrayAsync(newsContent.Url); String source1 = Encoding.GetEncoding("utf-8").GetString(response1, 0, response1.Length - 1); source1 = WebUtility.HtmlDecode(source1); HtmlDocument resultat1 = new HtmlDocument(); resultat1.LoadHtml(source1); HtmlNode doc = resultat1.DocumentNode.SelectSingleNode("//div[@class='entry-content']"); HtmlNode node = doc.SelectSingleNode("//div[@class='yasr-visitor-votes']"); if (node != null) node.ParentNode.RemoveChild(node); HtmlNode node1 = doc.SelectSingleNode("//div[@class='post-tags']"); if (node1 != null) node1.ParentNode.RemoveChild(node1); HtmlNode node2 = doc.SelectSingleNode("//div[@class='mom-social-share ss-horizontal border-box']"); if (node2 != null) node2.ParentNode.RemoveChild(node2); HtmlNode node3 = doc.SelectSingleNode("//script|//style"); if (node3 != null) node3.ParentNode.RemoveChild(node3); newsContent.Content = doc.InnerHtml; lstResult.Add(newsContent); } } catch (Exception e) { } return lstResult; } 

时间表以此代码开头：

  public class JobScheduler { public static void Start() { IScheduler scheduler = StdSchedulerFactory.GetDefaultScheduler(); scheduler.Start(); IJobDetail job = JobBuilder.Create().Build(); ITrigger trigger = TriggerBuilder.Create().StartNow() .WithDailyTimeIntervalSchedule (s => s.WithIntervalInHours(24) .OnEveryDay() .StartingDailyAt(TimeOfDay.HourAndMinuteOfDay(0, 0)) ) .Build(); scheduler.ScheduleJob(job, trigger); } } 

有几个问题：

当我运行此代码时代码从未执行因为ITrigger trigger = TriggerBuilder.Create().StartNow()所以我必须等待24小时才能看到结果为什么？

第二个问题，当我将代码上传到Web服务器时，它不起作用。为什么？

Answer 1

尝试更新您的方法，如下所示：

 public class JobScheduler { public static void Start() { IScheduler scheduler = StdSchedulerFactory.GetDefaultScheduler(); scheduler.Start(); IJobDetail job = JobBuilder.Create().Build(); ITrigger trigger = TriggerBuilder.Create() .WithIdentity("trigger1", "group1") .StartNow() .WithSchedule(CronScheduleBuilder .DailyAtHourAndMinute(0,0) .WithMisfireHandlingInstructionFireAndProceed() //MISFIRE_INSTRUCTION_FIRE_NOW .InTimeZone(TimeZoneInfo.FindSystemTimeZoneById("GTB Standard Time")) //(GMT+02:00) //https://alexandrebrisebois.wordpress.com/2013/01/20/using-quartz-net-to-schedule-jobs-in-windows-azure-worker-roles/ ) .Build(); scheduler.ScheduleJob(job, trigger); } } 

关于第二个问题，问题与IIS而不是调度程序Quartz.NET ， Hangfire等有关。另一方面，Web上发布了许多解决方法，但只有部分工作正常。 在我看来，没有必要应用大量的配置设置。 只需在您发布应用程序并享受的服务器上安装Keep Alive Service for IIS 6.0 / 7.5即可。 然后，在应用程序池回收，IIS /应用程序重新启动等之后，您发布的应用程序将处于活动状

更新：这是我在IIS上使用了几个月的完整工作代码没有任何问题。 另一方面，对于基于IIS的触发问题，看看我在Quartz.net上的答案调度程序一旦部署就不会触发作业/触发器 。

Global.asax中：

 protected void Application_Start() { JobScheduler.Start(); } 

EmailJob.cs：

 using Quartz; public class EmailJob : IJob { public void Execute(IJobExecutionContext context) { SendEmail(); } } 

JobScheduler.cs：

 using Quartz; using Quartz.Impl; public class JobScheduler { public static void Start() { IScheduler scheduler = StdSchedulerFactory.GetDefaultScheduler(); scheduler.Start(); IJobDetail job = JobBuilder.Create().Build(); ITrigger trigger = TriggerBuilder.Create() .WithIdentity("trigger1", "group1") //.StartAt(new DateTime(2015, 12, 21, 17, 19, 0, 0)) .StartNow() .WithSchedule(CronScheduleBuilder .WeeklyOnDayAndHourAndMinute(DayOfWeek.Monday, 10, 00) //.WithMisfireHandlingInstructionDoNothing() //Do not fire if the firing is missed .WithMisfireHandlingInstructionFireAndProceed() //MISFIRE_INSTRUCTION_FIRE_NOW .InTimeZone(TimeZoneInfo.FindSystemTimeZoneById("GTB Standard Time")) //(GMT+02:00) ) .Build(); scheduler.ScheduleJob(job, trigger); } }