我的web应用程序中有一些预定的功能，可以在glassfish上运行。 这些功能计划在每天，每周，每月和每年运行。但只有每日预定的功能才会开始。请看一下代码：
public class SchedulerServlet extends GenericServlet {
private static Boolean isLoaded = Boolean.FALSE;
@Override
public void service(ServletRequest arg0, ServletResponse arg1) throws ServletException, IOException {
}
@Override
public String getServletInfo() {
return null;
}
private void scheduleCronJob(String ejbName, String methodName, String cronExpr) {
final String jobName = "quartz job: " + ejbName + "." + methodName;
System.out.println("SchedulerServlet.scheduleCronJob: ejbName: "+ ejbName +" methodname: "+ methodName +" cronExpr: "+ cronExpr ); //asd
CronTrigger cronTrigger = new CronTrigger(jobName, "Quartz Trigger");
try {
cronTrigger.setCronExpression(cronExpr);
scheduleJob(ejbName, methodName, cronTrigger, "-cron");
} catch (Exception ex) {
System.out.println("STATE : " + "scheduleCronJob fonksiyonunda hata var.") ;
Logger.getLogger(SchedulerServlet.class.getName()).log(Level.SEVERE, null, ex);
}
}
private void scheduleSimpleJob(String ejbName, String methodName, Date time) {
System.out.println("SchedulerServlet.scheduleSimpleJob: ejbName: "+ ejbName +" methodname: "+ methodName +" time: "+ time ); //asd
final String jobName = "quartz job: " + ejbName + "." + methodName;
SimpleTrigger simpleTrigger = new SimpleTrigger(jobName, "Quartz Trigger", time);
try {
scheduleJob(ejbName, methodName, simpleTrigger, "-simple");
} catch (Exception ex) {
System.out.println("STATE : " + "scheduleSimpleJob fonksiyonunda hata var.") ;
Logger.getLogger(SchedulerServlet.class.getName()).log(Level.SEVERE, null, ex);
}
}
private void scheduleJob (String ejbName, String methodName, Trigger trigger, String tail) throws SchedulerException {
try {
final String jobName = "quartz job: " + ejbName + "." + methodName + tail;
JobDetail jd = new JobDetail(jobName , "Quartz Job", GFv3EJBInvokerJob.class);
jd.getJobDataMap().put("ejb", "java:module/"+ejbName);
jd.getJobDataMap().put("method", methodName);
System.out.println("SchedulerServlet.scheduleJob: ejbName: "+ ejbName +" methodname: "+ methodName +" trigger: "+ trigger +" tail: "+tail); //asd
Scheduler sched = StdSchedulerFactory.getDefaultScheduler();
sched.scheduleJob(jd, trigger);
Logger.getLogger(SchedulerServlet.class.getName()).log(Level.INFO, null, jobName + " is scheduled...");
} catch ( Exception ex ) {
System.out.println("STATE : " + "scheduleJob fonksiyonunda hata var.") ;
}
}
@Override
public synchronized void init(ServletConfig config) throws ServletException {
if (!isLoaded) {
super.init(config);
System.out.println("SchedulerServlet.init: "+config.toString()); //asd
scheduleCronJob("OFReportTimeoutService", "ofTimeout", "*/15 * * * * ?");//Seconds, Minutes, Hours, Day of month, Month, Day of week, Year
scheduleCronJob("ScheduledReportTimeoutService", "protectionInformationTimeout", "0 0 */3 * * ?");
Calendar now = new GregorianCalendar();
if (!(now.get(Calendar.HOUR)%3 == 2 && now.get(Calendar.MINUTE) > 40)) {
now.add(Calendar.MINUTE, 5);
scheduleSimpleJob("ScheduledReportTimeoutService", "protectionInformationTimeout", now.getTime());
}
scheduleCronJob("ScheduledReportTimeoutService", "dailyTimeout", "0 0 4 * * ?");
scheduleCronJob("ScheduledReportTimeoutService", "weeklyTimeout", "0 15 4 ? * MON");
scheduleCronJob("ScheduledReportTimeoutService", "monthlyTimeout", "0 0 4 1 * ?");
scheduleCronJob("ScheduledReportTimeoutService", "yearlyTimeout", "0 0 4 1 1 ?");
isLoaded = Boolean.TRUE;
}
else {
System.out.println("STATE : " + "synchronized isn't running. isLoaded = TRUE") ;
System.out.println("STATE : " + "OFReportTimeoutService and protectionInformationTimeout services can't run.") ;
System.out.println("STATE : " + "synchronized isn't running. ") ;
Logger.getLogger(SchedulerServlet.class.getName()).log(Level.SEVERE, null, " isn't scheduled...");
}
}
}
但有趣的是当我改变浮动线的顺序时
scheduleCronJob("ScheduledReportTimeoutService", "dailyTimeout", "0 0 4 * * ?");
scheduleCronJob("ScheduledReportTimeoutService", "weeklyTimeout", "0 15 4 ? * MON");
scheduleCronJob("ScheduledReportTimeoutService", "monthlyTimeout", "0 0 4 1 * ?");
scheduleCronJob("ScheduledReportTimeoutService", "yearlyTimeout", "0 0 4 1 1 ?");
这是
scheduleCronJob("ScheduledReportTimeoutService", "weeklyTimeout", "0 15 4 ? * MON");
scheduleCronJob("ScheduledReportTimeoutService", "dailyTimeout", "0 0 4 * * ?");
scheduleCronJob("ScheduledReportTimeoutService", "monthlyTimeout", "0 0 4 1 * ?");
scheduleCronJob("ScheduledReportTimeoutService", "yearlyTimeout", "0 0 4 1 1 ?");
所有功能都会在时机成熟时触发。这有意义吗。只需更改两个函数的顺序即可使代码正常工作。我错过了什么吗？
答案 0 :(得分：0)
我无法纠正您的代码，但这对我的项目有用。我已经使用Quartz通过一个Cron表达式来安排两个不同的事件，这个表达式在服务器启动时通过web.xml发送。以下是我的示例，供您参考。也许，你可以按照类似的方式来纠正你的代码...希望这会有所帮助。
web.xml条目
<servlet>
<servlet-name>QuartzInitializer</servlet-name>
<servlet-class>org.quartz.ee.servlet.QuartzInitializerServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>QuartzServlet</servlet-name>
<servlet-class>com.xyz.SampleSchedulerServlet</servlet-class>
<init-param><param-name>firstCronExpr</param-name><param-value>7 0/1 * * * ?</param-value></init-param>
<init-param><param-name>secondCronExpr</param-name><param-value>7 0/20 * * * ?</param-value></init-param>
<load-on-startup>2</load-on-startup>
</servlet>
Servlet代码
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.GenericServlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import org.quartz.CronTrigger;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.impl.StdSchedulerFactory;
public class SampleSchedulerServlet extends GenericServlet {
private static Logger log = Logger.getLogger(SampleSchedulerServlet.class.getName());
private static final long serialVersionUID = 1L;
private static final String FIRST_JOB_NAME = "First Sample Scheduler Job";
private static final String FIRST_GROUP_NAME = "First Sample Scheduler Group";
private static final String FIRST_TRIGGER_NAME = "First Sample Scheduler Trigger";
private static final String SECOND_JOB_NAME = "Second Sample Scheduler Job";
private static final String SECOND_GROUP_NAME = "Second Sample Scheduler Group";
private static final String SECOND_TRIGGER_NAME = "Second Sample Scheduler Trigger";
public void init(ServletConfig config) throws ServletException {
super.init(config);
log.log(Level.INFO, "Invoking scheduler for Sample..");
try {
String cronExpression = getInitParameter("firstCronExpr");
Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
CronTrigger cronTrigger = new CronTrigger(FIRST_TRIGGER_NAME, FIRST_GROUP_NAME, cronExpression);
JobDetail jobDetail = new JobDetail(FIRST_JOB_NAME, FIRST_GROUP_NAME, SomeClass.class);
scheduler.scheduleJob(jobDetail, cronTrigger);
cronExpression = getInitParameter("secondCronExpr");
scheduler = StdSchedulerFactory.getDefaultScheduler();
cronTrigger = new CronTrigger(SECOND_TRIGGER_NAME, SECOND_GROUP_NAME, cronExpression);
jobDetail = new JobDetail(SECOND_JOB_NAME, SECOND_GROUP_NAME, SomeClass.class);
scheduler.scheduleJob(jobDetail, cronTrigger);
log.log(Level.INFO, "Sample Timer scheduled...");
} catch (Exception e) {
log.log(Level.SEVERE, "Problem invoking SampleSchedulerServlet to schedule the Sample jobs..");
e.printStackTrace();
}
}
public void service(ServletRequest arg0, ServletResponse arg1) throws ServletException, IOException {
}
public String getServletInfo() {
return null;
}
public void destroy() {
try {
Scheduler sched = StdSchedulerFactory.getDefaultScheduler();
sched.shutdown();
log.log(Level.INFO, "Shutting down Sample scheduler - Successful !");
} catch (Exception e) {
log.log(Level.SEVERE, "Shutting down Sample scheduler - FAILED !");
e.printStackTrace();
}
}
}