Download it – Struts2-Spring-Quartz-Integration-Example.zip

In this tutorial, it shows how to integrate Struts 2 + Spring + Quartz scheduler together. The relationship as following :

Struts 2 <-- Plugin --> Spring <--(Helper)--> Quartz <---> Scheduler task
This article will do a little explanation on the Struts 2 and Spring integration, for details, please access this Struts 2 + Spring integration example.

1. Project folder

Here’s the project folder structure.

Struts 2 Spring Quartz integration example

2. Dependency Libraries

Get all the dependency libraries, you need Spring, Struts2, Strut2-Spring-Plugin and Quartz jar file.

pom.xml

  ...
  <dependencies>
 
	<!-- Struts 2 -->
	<dependency>
          <groupId>org.apache.struts</groupId>
	  <artifactId>struts2-core</artifactId>
	  <version>2.1.8</version>
        </dependency>
 
	<!-- Quartz framework -->
	<dependency>
          <groupId>opensymphony</groupId>
	  <artifactId>quartz</artifactId>
	  <version>1.6.3</version>
	</dependency>
 
	<!-- Quartz dependency library-->
	<dependency>
	  <groupId>commons-collections</groupId>
	  <artifactId>commons-collections</artifactId>
	  <version>3.2.1</version>
	</dependency>
 
	<!-- Spring framework --> 
	<dependency>
		<groupId>org.springframework</groupId>
		<artifactId>spring</artifactId>
		<version>2.5.6</version>
	</dependency>
 
	<dependency>
		<groupId>org.springframework</groupId>
		<artifactId>spring-web</artifactId>
		<version>2.5.6</version>
	</dependency>
 
	<!-- Struts 2 + Spring plugins -->
	<dependency>
          <groupId>org.apache.struts</groupId>
	  <artifactId>struts2-spring-plugin</artifactId>
	  <version>2.1.8</version>
        </dependency>
 
  </dependencies>
  ...

3. Scheduler Task

Put all the scheduler logic in this class.

SchedulerTask.java

package com.mkyong.quartz;
 
public class SchedulerTask {
 
   public void printSchedulerMessage() {
 
	   System.out.println("Struts 2 + Spring + Quartz ......");
 
   }
}

4. Spring + Quartz

To integrate Spring and Quartz, create a class extends the org.springframework.scheduling.quartz.QuartzJobBean, reference the scheduler task (SchedulerTask.java) via a setter method, and put the scheduler logic inside the executeInternal() method.

SchedulerJob.java

package com.mkyong.quartz;
 
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;
 
public class SchedulerJob extends QuartzJobBean
{
	private SchedulerTask schedulerTask;
 
	public void setSchedulerTask(SchedulerTask schedulerTask) {
		this.schedulerTask = schedulerTask;
	}
 
	protected void executeInternal(JobExecutionContext context)
	throws JobExecutionException {
 
		schedulerTask.printSchedulerMessage();
 
	}
}

Create an applicationContext.xml file, put all the Spring + Quartz integration stuff inside. In Spring configuration file, it will call the “schedulerJob” bean every 10 seconds.

applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
 
   <!-- Scheduler task -->
   <bean name="schedulerTask" class="com.mkyong.quartz.SchedulerTask" />
 
   <!-- Scheduler job -->
   <bean name="schedulerJob"
	   class="org.springframework.scheduling.quartz.JobDetailBean">
 
     <property name="jobClass" value="com.mkyong.quartz.SchedulerJob" />
 
     <property name="jobDataAsMap">
	    <map>
	      <entry key="schedulerTask" value-ref="schedulerTask" />
	     </map>
      </property>
   </bean>
 
   <!-- Cron Trigger -->
   <bean id="cronTrigger"
	class="org.springframework.scheduling.quartz.CronTriggerBean">
 
	<property name="jobDetail" ref="schedulerJob" />
	<property name="cronExpression" value="0/10 * * * * ?" />
 
   </bean>
 
   <!-- Scheduler -->
   <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
	<property name="jobDetails">
	   <list>
	      <ref bean="schedulerJob" />
	   </list>
	</property>
 
	<property name="triggers">
	    <list>
		<ref bean="cronTrigger" />
	    </list>
	</property>
   </bean>
 
</beans>

5. Struts 2 + Spring

To integrate Struts 2 + Spring, just put the org.springframework.web.context.ContextLoaderListener listener class in the web.xml file.

web.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >
 
<web-app>
  <display-name>Struts 2 Web Application</display-name>
 
  <filter>
	<filter-name>struts2</filter-name>
	<filter-class>
	  org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
	</filter-class>
  </filter>
 
  <filter-mapping>
	<filter-name>struts2</filter-name>
	<url-pattern>/*</url-pattern>
  </filter-mapping>
 
  <listener>
    <listener-class>
	  org.springframework.web.context.ContextLoaderListener
	</listener-class>
  </listener>
 
</web-app>

6. Demo

When the Strut2 project is started, the Quartz scheduler job will call the SchedulerTask.printSchedulerMessage() at every 10 seconds.

INFO: ... initialized Struts-Spring integration successfully
16 Julai 2010 12:51:38 PM org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
16 Julai 2010 12:51:38 PM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
16 Julai 2010 12:51:38 PM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/21  config=null
16 Julai 2010 12:51:38 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 2110 ms
Struts 2 + Spring + Quartz ......
Struts 2 + Spring + Quartz ......
Struts 2 + Spring + Quartz ......
Struts 2 + Spring + Quartz ......
Struts 2 + Spring + Quartz ......

Reference

  1. Struts 2 + Spring integration example
  2. Struts 2 Spring plugin documentation
  3. Struts + Spring integration example
  4. Struts + Quartz integration example
  5. Struts + Spring + Quartz integration example
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