Spring Framework

How to work with Spring Scheduler

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• published: 27 Aug 2016
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http://spring-java4dev.com/spring-framework/spring-scheduler How to work with Spring Scheduler Spring Framework provides a mechanism for scheduling purpose: Spring Scheduler. The tutorial will introduce about how to schedule tasks with Spring. I. Technology for Spring Scheduler tutorial – Java 1.8 – Maven: 3.3.9 – Editor: Spring Tool Suite – Version 3.7.3.RELEASE – Spring Boot: Version: 3.8.0.RELEASE II. Overview 1. Structure of project 2. Step to Do – Create Spring Boot project – Create Create Scheduler Task – Enable Spring Scheduler – Run & Check result 3. Demo Video III. Practices 1. Create Spring Boot project Open Spring Tool Suite, on main menu, Choose File-New-Spring Starter Project. Input needed information about project as below images Press Next button then press Finish. Spring Boot project is created. 2. Create Create Scheduler Task Create a simple component class with 3 scheduled tasks defined by 3 methods: – @Scheduled(fixedRate = 2000) public void timeReport(): the method will be invoked each 2 seconds – @Scheduled(initialDelay=1000, fixedRate = 2000) public void initDelayTimeReport(): the method will be delay 1 second & will be invoked each 2 seconds after the first time – @Scheduled(cron = “*/5 * * * * *”) public void cronTimeReport(): using cron-expression for define a scheduled task that will be invoked for each 5 seconds. – @Scheduled: An annotation that marks a method to be scheduled. Exactly one of the cron(), fixedDelay(), or fixedRate() attributes must be specified. 3. Enable Spring Scheduler Using @EnableScheduling in main Spring class: Enables Spring’s scheduled task execution capability, similar to functionality found in Spring’s XML namespace. 4. Run & Check result – Compile sourcecode: clean install – Run project with Spring mode: Spring Boot App. – Log: [TimeReport] Now: 16:01:13 2016-08-21 16:01:13.938 INFO 5292 --- [ main] c.s.s.SpringSchedulerApplication : Started SpringSchedulerApplication in 4.827 seconds (JVM running for 7.839) [InitDelayTimeReport] Now: 16:01:14 [CronTimeReport] Now: 16:01:15 [TimeReport] Now: 16:01:15 [InitDelayTimeReport] Now: 16:01:16 [TimeReport] Now: 16:01:17 [InitDelayTimeReport] Now: 16:01:18 [TimeReport] Now: 16:01:19 [CronTimeReport] Now: 16:01:20 [InitDelayTimeReport] Now: 16:01:20 [TimeReport] Now: 16:01:21 [InitDelayTimeReport] Now: 16:01:22 [TimeReport] Now: 16:01:23 [InitDelayTimeReport] Now: 16:01:24 [CronTimeReport] Now: 16:01:25 [TimeReport] Now: 16:01:25 [InitDelayTimeReport] Now: 16:01:26 IV. Source code Spring Scheduler =============================Related Keyword================================ #spring scheduler example #springschedulerexample #spring scheduler vs quartz #springschedulervsquartz #spring scheduler clustered environment #springschedulerclusteredenvironment #spring scheduler tutorial #springschedulertutorial #spring boot scheduler #springbootscheduler #spring scheduler cron expression #springschedulercronexpression #threadpooltaskscheduler #threadpooltaskscheduler #spring scheduler cron syntax #springschedulercronsyntax #how to enable task scheduler in windows 7 #howtoenabletaskschedulerinwindows7 #scheduled task enable history #scheduledtaskenablehistory #powershell enable scheduled task #powershellenablescheduledtask #how to schedule a exe in task scheduler #howtoscheduleaexeintaskscheduler #schedule vbscript task scheduler #schedulevbscripttaskscheduler #schedule reboot task scheduler #schedulereboottaskscheduler #spring task scheduler example #springtaskschedulerexample #spring boot task scheduler #springboottaskscheduler