使用带自动缩放的java的GAE上的Cron作业失败

我正在尝试使用cron job每天执行一次工作。 我正在使用自动缩放。 使用cron job我每天都会发送一次电子邮件。 我有两个条件：

1. 每当我每天设置一次时间，例如every day 18:00然后cron作业成功运行，但它只执行3,4行CronJob实现类。 在记录器中我只得到4行执行如下： –

   

2. 每当我every 2 minutes或every 5 minutes设置一次时间，然后cron作业成功运行并且cron作业实现类成功执行意味着它成功发送电子邮件。

为什么第一个条件不发送电子邮件？

是否有应用程序在那个时候闲置，这就是为什么它没有执行？

有帮助吗？ Cron.xml： –

   /slick_erp/cronCustomerService Implemented for due services of customer. every day 11:30   

web.xml中： –

  CustomerServiceCronJobImpl com.slicktechnologies.server.cronjobimpl.CustomerServiceCronJobImpl   CustomerServiceCronJobImpl /slick_erp/cronCustomerService  

我的cronjob实现类： –

 public class CustomerServiceCronJobImpl extends HttpServlet { /** * */ private static final long serialVersionUID = -6268357776825855510L; private SimpleDateFormat fmt = new SimpleDateFormat("dd-MMM-yyyy"); private SimpleDateFormat fmt1 = new SimpleDateFormat("dd/MM/yyyy"); Logger logger = Logger.getLogger("NameOfYourLogger"); public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException { servicecontactlist(); } private void servicecontactlist() { fmt.setTimeZone(TimeZone.getTimeZone("IST")); fmt1.setTimeZone(TimeZone.getTimeZone("IST")); Email cronEmail = new Email(); Date today=DateUtility.getDateWithTimeZone("IST", new Date()); /** * Adding 1 day extra to date */ logger.log(Level.SEVERE,"Date Before Adding One Day"+today); DateFormat dateFormat=new SimpleDateFormat("dd/MM/yyyy"); Calendar cal=Calendar.getInstance(); cal.setTime(today); cal.add(Calendar.DATE, 0); Date dateForFilter=null; try { dateForFilter=dateFormat.parse(dateFormat.format(cal.getTime())); cal.set(Calendar.HOUR_OF_DAY,23); cal.set(Calendar.MINUTE,59); cal.set(Calendar.SECOND,59); cal.set(Calendar.MILLISECOND,999); dateForFilter=cal.getTime(); } catch (ParseException e) { e.printStackTrace(); } logger.log(Level.SEVERE,"Date After Adding One Date"+dateForFilter); /*************************************End*********************************/ try{ logger.log(Level.SEVERE,"In service ContactList"); logger.log(Level.SEVERE,"Date After Adding One Date=="+dateForFilter); logger.log(Level.SEVERE," 1 "); /********************************Adding status in the list ***********************/ logger.log(Level.SEVERE," 2 "); ArrayList obj = new ArrayList(); obj.add("Scheduled"); obj.add("Pending"); obj.add("Rescheduled"); logger.log(Level.SEVERE," 3 "); /******************************Converting todayDate to String format*****************/ logger.log(Level.SEVERE," 4 "); Date todaysDate = new Date(); SimpleDateFormat df = new SimpleDateFormat("dd/MM/yyyy"); logger.log(Level.SEVERE," 5 "); String todayDateString = df.format(todaysDate); logger.log(Level.SEVERE," 6 "); System.out.println("String in dd/MM/yyyy format is: " + todayDateString); logger.log(Level.SEVERE," 7 "); /********************************Adding Companies in the list ***********************/ logger.log(Level.SEVERE," 8 "); List compEntity = ofy().load().type(Company.class).list(); logger.log(Level.SEVERE," 9 "); if(compEntity.size()>0){ logger.log(Level.SEVERE,"If compEntity size > 0"); logger.log(Level.SEVERE,"Size of compEntity"+compEntity.size()); for(int i=0;i<compEntity.size();i++){ Company c=compEntity.get(i); logger.log(Level.SEVERE,"In the for loop"); logger.log(Level.SEVERE,"Company Name="+c); logger.log(Level.SEVERE,"The value of i is:" +i); logger.log(Level.SEVERE,"Date After Adding One Date"+dateForFilter); /********************************Checking prosname & prosconfig for each company ***********************/ ProcessName prosName = ofy().load().type(ProcessName.class).filter("processName","CronJob").filter("status",true).filter("companyId", compEntity.get(i).getCompanyId()).first().now(); ProcessConfiguration prosconfig = ofy().load().type(ProcessConfiguration.class).filter("processList.processName", "CronJob").filter("processList.processType", "ServiceDailyMail").filter("processList.status",true).filter("companyId", compEntity.get(i).getCompanyId()).first().now(); logger.log(Level.SEVERE,"after 3 filters for ProcessConfigurations"); System.out.println("after 3 filters for ProcessConfigurations"); if(prosName!=null){ logger.log(Level.SEVERE,"In the prossName"); if(prosconfig!=null){ logger.log(Level.SEVERE,"In the ProsConfifg !=null "); /********************************Reading services from Service entity ***********************/ List serEntity = ofy().load().type(Service.class).filter("companyId",compEntity.get(i).getCompanyId()).filter("serviceDate <=",dateForFilter).filter("status IN",obj).list(); logger.log(Level.SEVERE,"Today date Is:"+dateForFilter); logger.log(Level.SEVERE,"service entity size:"+serEntity.size()); // email id is added to emailList ArrayList toEmailList=new ArrayList(); toEmailList.add(compEntity.get(i).getPocEmail()); String mailTitl = "Services Due As On Date"; if(serEntity.size()>0){ ArrayList tbl_header = new ArrayList(); tbl_header.add("Branch"); tbl_header.add("Customer Id"); tbl_header.add("Customer Name"); tbl_header.add("Customer Contact No"); tbl_header.add("Crontact Id"); tbl_header.add("Service Id"); tbl_header.add("Service Date"); tbl_header.add("Service Engineer"); tbl_header.add("Product Name"); tbl_header.add("Status"); tbl_header.add("Ageing"); /********************************Sorting table with Branch & Service Date ***********************/ Comparator serviceDateComparator2 = new Comparator() { public int compare(Service s1, Service s2) { Date date1 = s1.getServiceDate(); Date date2 = s2.getServiceDate(); //ascending order return date1.compareTo(date2); } }; Collections.sort(serEntity, serviceDateComparator2); Comparator serviceDateComparator = new Comparator() { public int compare(Service s1, Service s2) { String branch1 = s1.getBranch(); String branch2 = s2.getBranch(); //ascending order return branch1.compareTo(branch2); } }; Collections.sort(serEntity, serviceDateComparator); /********************************Getting serviceEntity data and adding in the tbl1 List ***********************/ ArrayList tbl1=new ArrayList(); for(int j=0;j0){ System.out.println("Sorry no services found for this company"); logger.log(Level.SEVERE,"Sorry no services found for this company"); // mailTitl = "No Services Found Due"; cronEmail.cronSendEmail(toEmailList, "Services Due As On Date"+" "+ todayDateString, mailTitl , c, null, null, null, null, null, null); } } else{ //else block for prosconfig logger.log(Level.SEVERE,"ProcessConfiguration is null"); System.out.println("ProcessConfiguration is null"); } }else{ //else block for pross!=null logger.log(Level.SEVERE,"Cron job status is Inactive"); System.out.println("Cron job status is Inactive"); } } //end of for loop } else{ //else block for if(compEntity.size()>0) logger.log(Level.SEVERE,"No Company found from cron job completed"); System.out.println("No Company found from cron job completed"); } }catch(Exception e2){ e2.printStackTrace(); } } }