JAVA EE: Spring Job Scheduling using Task Scheduler - Fixed Rate (XML Config)

Saturday, 8 December 2018

Spring Job Scheduling using Task Scheduler - Fixed Rate (XML Config) | Spring Scheduler tutorial

Click here to watch on Youtube:
https://www.youtube.com/watch?v=3wp4PKJ1rdI&list=UUhwKlOVR041tngjerWxVccw

Click the below Image to Enlarge:

Spring Job Scheduling using Task Scheduler - Fixed Rate (XML Config) | Spring Scheduler tutorial

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/maven-v4_0_0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>com.ram.core</groupId>

    <artifactId>SpringDemo</artifactId>

    <packaging>jar</packaging>

    <version>1.0-SNAPSHOT</version>

    <name>SpringDemo</name>

    <url>http://maven.apache.org</url>

    <properties>

        <spring.version>5.0.9.RELEASE</spring.version>

    </properties>

    <dependencies>

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>3.8.1</version>

            <scope>test</scope>

        </dependency>

        <!-- Spring 5 dependencies -->

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-core</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework/spring-context-support -->

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-context-support</artifactId>

            <version>${spring.version}</version>

        </dependency>

    </dependencies>

</project>

ScheduledTasks.java

package com.ram.scheduler;

import java.text.SimpleDateFormat;

import java.util.Date;

public class ScheduledTasks

{

    private static final SimpleDateFormat dateFormat = new SimpleDateFormat(

            "HH:mm:ss");

    public void reportCurrentTime()

    {

        System.out.println(

                "Current time = " + dateFormat.format(new Date()));

    }

}

Spring-Scheduler.xml

<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"

    xmlns:task="http://www.springframework.org/schema/task"

    xsi:schemaLocation="http://www.springframework.org/schema/beans

    http://www.springframework.org/schema/beans/spring-beans-4.3.xsd

    http://www.springframework.org/schema/context

    http://www.springframework.org/schema/context/spring-context-4.3.xsd

    http://www.springframework.org/schema/task 

    http://www.springframework.org/schema/task/spring-task-3.0.xsd">

    <bean id="scheduledTasks" class="com.ram.scheduler.ScheduledTasks" />

    <!-- Configure the scheduler -->

    <task:scheduler id="myScheduler" pool-size="10" />

    <!-- Configure parameters -->

    <task:scheduled-tasks scheduler="myScheduler">

        <task:scheduled ref="scheduledTasks" method="reportCurrentTime"

            fixed-rate="5000" />

    </task:scheduled-tasks>

</beans>

App.java

package com.ram.core;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class App

{

    public static void main(String[] args)

    {

        ApplicationContext context = new ClassPathXmlApplicationContext(

                "Spring-Scheduler.xml");

    }

}

Output

Nov 24, 2018 10:36:48 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh

INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@4783da3f: startup date [Sat Nov 24 10:36:48 IST 2018]; root of context hierarchy

Nov 24, 2018 10:36:48 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions

INFO: Loading XML bean definitions from class path resource [Spring-Scheduler.xml]

Nov 24, 2018 10:36:49 AM org.springframework.scheduling.concurrent.ExecutorConfigurationSupport initialize

INFO: Initializing ExecutorService  'myScheduler'

Current time = 10:36:49

Current time = 10:36:54

Current time = 10:36:59

Current time = 10:37:04

Current time = 10:37:09