In this post we will see how to schedule Jobs using Quartz Scheduler with Spring. Spring provides couple of classes that simplify the usage of Quartz within Spring-based applications.
Step 1: Provide Dependencies in Maven pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion> <groupId>com.websystique.spring</groupId>
<artifactId>SpringQuartzIntegrationExample</artifactId>
<version>1.0.0</version>
<packaging>jar</packaging>
<name>SpringQuartzIntegrationExample</name> <properties>
<springframework.version>4.2.4.RELEASE</springframework.version>
<quartz.version>2.2.1</quartz.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${springframework.version}</version>
</dependency>
<!-- Transaction dependency is required with Quartz integration -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${springframework.version}</version>
</dependency>
<!-- Quartz framework -->
<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz</artifactId>
<version>${quartz.version}</version>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
<encoding>UTF-8</encoding>
<showDeprecation>true</showDeprecation>
<showWarnings>true</showWarnings>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
Step 2: Configure Jobs in Quartz Scheduler
There are 2 ways to configure a Job in Spring using Quartz
A : Using MethodInvokingJobDetailFactoryBean
Really handy when you just need to invoke a method on a specific bean. This is the simplest among two.
<!-- For times when you just need to invoke a method on a specific object -->
<bean id="simpleJobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
<property name="targetObject" ref="myBean" />
<property name="targetMethod" value="printMessage" />
</bean>
Above job configuration simply invokes printMessage method of bean myJobBean which is simple POJO
B : Using JobDetailFactoryBean
When you need more advanced setup, need to pass data to job, being more flexible.
<!-- For times when you need more complex processing, passing data to the scheduled job -->
<bean name="complexJobDetail" class="org.springframework.scheduling.quartz.JobDetailFactoryBean">
<property name="jobClass" value="com.**.spring.quartz.ScheduledJob" />
<property name="jobDataMap">
<map>
<entry key="anotherBean" value-ref="anotherBean" />
</map>
</property>
<property name="durability" value="true" />
</bean>
jobClass refers to a class which extends QuartzJobBean, an implementation of Quartz job interface. On invocation of this job, it’s executeInternal method gets called.jobDataMap provides opportunity to pass some data to underlying job bean. In this case, we are passing a bean ‘anotherBean’ which will be used by ScheduledJob.
Below is the referred jobclass (ScheduledJob) implementation.
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean; import com.bianjq.spring.scheduling.AnotherBean; public class ScheduledJob extends QuartzJobBean{ private AnotherBean anotherBean; @Override
protected void executeInternal(JobExecutionContext arg0)
throws JobExecutionException {
anotherBean.printAnotherMessage();
} public void setAnotherBean(AnotherBean anotherBean) {
this.anotherBean = anotherBean;
}
}
Step 3: Configure Triggers to be used in Quartz Scheduler
Trigger defines the time when scheduler will run your scheduled job. There are two possible trigger type:
A: Simple Trigger , using SimpleTriggerFactoryBean
You can specify start time, delay between triggers and repeatInterval(frequency) to run the job.
<!-- Run the job every 2 seconds with initial delay of 1 second -->
<bean id="simpleTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerFactoryBean">
<property name="jobDetail" ref="simpleJobDetail" />
<property name="startDelay" value="1000" />
<property name="repeatInterval" value="2000" />
</bean>
B: Cron Trigger , using CronTriggerFactoryBean
It’s more flexible and allows you to choose scheduled job at specific instance (time, day, date,..) and frequency in future.
<!-- Run the job every 5 seconds only on Weekends -->
<bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
<property name="jobDetail" ref="complexJobDetail" />
<property name="cronExpression" value="0/5 * * ? * SAT-SUN" />
</bean>
Step 4: Configure SchedulerFactoryBean that creates and configures Quartz Scheduler
SchedulerFactoryBean glues together jobDetails and triggers to Configure Quartz Scheduler
<!-- Scheduler factory bean to glue together jobDetails and triggers to Configure Quartz Scheduler -->
<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="jobDetails">
<list>
<ref bean="simpleJobDetail" />
<ref bean="complexJobDetail" />
</list>
</property> <property name="triggers">
<list>
<ref bean="simpleTrigger" />
<ref bean="cronTrigger" />
</list>
</property>
</bean>
Below shown is complete context file for our example
src/main/resources/quartz-context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"> <context:component-scan base-package="com.websystique.spring" /> <!-- For times when you just need to invoke a method on a specific object -->
<bean id="simpleJobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
<property name="targetObject" ref="myBean" />
<property name="targetMethod" value="printMessage" />
</bean> <!-- For times when you need more complex processing, passing data to the scheduled job -->
<bean name="complexJobDetail" class="org.springframework.scheduling.quartz.JobDetailFactoryBean">
<property name="jobClass" value="com.websystique.spring.quartz.ScheduledJob" />
<property name="jobDataMap">
<map>
<entry key="anotherBean" value-ref="anotherBean" />
</map>
</property>
<property name="durability" value="true" />
</bean> <!-- Run the job every 2 seconds with initial delay of 1 second -->
<bean id="simpleTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerFactoryBean">
<property name="jobDetail" ref="simpleJobDetail" />
<property name="startDelay" value="1000" />
<property name="repeatInterval" value="2000" />
</bean> <!-- Run the job every 5 seconds only on Weekends -->
<bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
<property name="jobDetail" ref="complexJobDetail" />
<property name="cronExpression" value="0/5 * * ? * SAT-SUN" />
</bean> <!-- Scheduler factory bean to glue together jobDetails and triggers to Configure Quartz Scheduler -->
<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="jobDetails">
<list>
<ref bean="simpleJobDetail" />
<ref bean="complexJobDetail" />
</list>
</property> <property name="triggers">
<list>
<ref bean="simpleTrigger" />
<ref bean="cronTrigger" />
</list>
</property>
</bean> </beans>
Step 5: Create simple POJO’s Task Beans used in this example
import org.springframework.stereotype.Component;
@Component("myBean")
public class MyBean {
public void printMessage() {
System.out.println("I am called by MethodInvokingJobDetailFactoryBean using SimpleTriggerFactoryBean");
}
}
import org.springframework.stereotype.Component;
@Component("anotherBean")
public class AnotherBean {
public void printAnotherMessage(){
System.out.println("I am called by Quartz jobBean using CronTriggerFactoryBean");
}
}
Step 6: Create Main, and Run the application
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext; public class AppMain {
public static void main(String args[]){
AbstractApplicationContext context = new ClassPathXmlApplicationContext("quartz-context.xml");
} }
Run it as Java application, you will see following output.
INFO: Starting Quartz Scheduler now
I am called by MethodInvokingJobDetailFactoryBean using SimpleTriggerFactoryBean
I am called by Quartz jobBean using CronTriggerFactoryBean
I am called by MethodInvokingJobDetailFactoryBean using SimpleTriggerFactoryBean
I am called by MethodInvokingJobDetailFactoryBean using SimpleTriggerFactoryBean
I am called by Quartz jobBean using CronTriggerFactoryBean
I am called by MethodInvokingJobDetailFactoryBean using SimpleTriggerFactoryBean
I am called by MethodInvokingJobDetailFactoryBean using SimpleTriggerFactoryBean
I am called by MethodInvokingJobDetailFactoryBean using SimpleTriggerFactoryBean
I am called by Quartz jobBean using CronTriggerFactoryBean
I am called by MethodInvokingJobDetailFactoryBean using SimpleTriggerFactoryBean