Quartz Scheduler - Eclipse

[Dan Van]

Hello and thanks for reading,

I'm trying to use Quartz Scheduler in a web project that sends out emails to users at preset intervals. I would happy to be able to print out simple "hello world" statements at this point.

This is the code for the application that I would like to run.

package testing;

import static org.quartz.JobBuilder.*;
import static org.quartz.SimpleScheduleBuilder.*;
import static org.quartz.CronScheduleBuilder.*;
import static org.quartz.CalendarIntervalScheduleBuilder.*;
import static org.quartz.TriggerBuilder.*;
import static org.quartz.DateBuilder.*;

import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.Trigger;
import org.quartz.impl.StdSchedulerFactory;

public class QuartzTest {

    public static void main(String[] args) throws InterruptedException {
    	System.out.println("MAIN!!!!");
        try {
            // Grab the Scheduler instance from the Factory 
            Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();

            // define the job and tie it to our HelloJob class
            JobDetail job = newJob(HelloJob.class)
                .withIdentity("job1", "group1")
                .build();
            
            // Trigger the job to run now, and then repeat every 40 seconds
            Trigger trigger = newTrigger()
                .withIdentity("trigger1", "group1")
                .startNow()
                .withSchedule(simpleSchedule()
                        .withIntervalInSeconds(40)
                        .repeatForever())            
                .build();
            scheduler.scheduleJob(job, trigger);
            
            // and start it off
            scheduler.start();
            Thread.sleep(60000);
            
            //scheduler.shutdown();

        } catch (SchedulerException se) {
            se.printStackTrace();
        }
    }
}

and this is the job that is to be called:

package testing;

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;

public class HelloJob implements Job {

    public HelloJob() {
    }

    public void execute(JobExecutionContext context)
      throws JobExecutionException
    {
      System.err.println("Hello!  HelloJob is executing.");
      System.out.println("HellowJob is executing");
    }
  }

this is my quartz.properties file:

org.quartz.scheduler.instanceName = QuartzTest
org.quartz.threadPool.threadCount = 3
org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore

and last but not least this is what I have added to my web.xml file

<servlet>
		<display-name>Quartz Initializer Servlet</display-name>
		<servlet-name>QuartzInitializer</servlet-name>
		<servlet-class>org.quartz.ee.servlet.QuartzInitializerServlet</servlet-class>
		<init-param>
			<param-name>shutdown-on-unload</param-name>
			<param-value>true</param-value>
		</init-param>
		<init-param>
			<param-name>start-scheduler-on-load</param-name>
			<param-value>true</param-value>
		</init-param>
		<init-param>
			<param-name>config-file</param-name>
			<param-value>quartz.properties</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet> 

Now, I am quite sure that the project is able to detect and read my quartz.properties file, but I have no reason to believe that the project (i.e. the server) knows anything about QuartzTest.java. I have not registered the class anywhere and likewise it is never called. Does anyone know how I can do this?

[Peter Johnson]

The first code you posted is for a stand-alone application that has nothing to do with web applications of web servers. Thus having is schedule quartz will not affect your web app in any way. Most web application servers have mechanism for scheduling tasks, some even use quartz as the underlying mechanism. If you would tell us which application server you are using, we could provide more help.

[Dan Van]

Hi thanks for the reply, I am using a Tomcat server

[Peter Johnson]

I'll move your post to the Tomcat forum, someone there might be able to help.