Provide time zone to Spring @Scheduled?

cron, java, scheduling, spring, timezone

Solution

It turned out that I could not use the `@Scheduled` annotation, but I implemented a work-around. In the JavaDoc of the SchedulingConfigurer it is stated that:

[SchedulingConfigurer is] Typically used for setting a specific TaskScheduler bean to be used when executing scheduled tasks or for registering scheduled tasks in a programmatic fashion as opposed to the declarative approach of using the @Scheduled annotation.

Next, I changed the cron job to implement the `Runnable` interface and then updated my configuration file to implement the `SchedulingConfigurer`, see below:

@Configuration
@EnableScheduling
@ComponentScan("package.that.contains.the.runnable.job.bean")
public class JobConfiguration implements SchedulingConfigurer {

    private static final String cronExpression = "0 0 14 * * *";
    private static final String timeZone = "CET";

    @Autowired
    private Runnable cronJob;

    @Bean
    CronTrigger cronTrigger() {
        return new CronTrigger(cronExpression, TimeZone.getTimeZone(timeZone));
    }

    @Override
    public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
        taskRegistrar.addCronTask(new CronTask(job, cronTrigger()));
    }
}

Please read the JavaDoc of the @EnableScheduling for more information.

Update

As of Spring 4, Spring Jira issue SPR-10456 has been resolved. Consequently, the `@Scheduled` annotation has a new zone attribute for exactly this purpose, e.g.

@Scheduled(cron = "0 0 14 * * *", zone = "CET")
public void execute() {
    // do scheduled job
}

Problem

How can I configure the time zone for a Spring based @Scheduled cron job? Background: I have a job that executes once a day, say 2 PM, using Spring's `@Scheduled` annotation: ``` @Scheduled(cron = "0 0 14 * * *") public void execute() { // do scheduled job } ``` The problem is that 2 PM differs between different servers, because Spring uses on `TimeZone.getDefault()` internally. Moreover, the JavaDoc of `TimeZone.getDefault()` states that: Gets the default TimeZone for this host. The source of the default TimeZone may vary with implementation. In other words, the time zone is not determined. It may depend on JVM implementation, server time zone configuration, server location, and / or other unknown factors. Consequently, the cron job triggers on different times on different servers, unless there is a way to explicitly set which time zone that should be used? I am using Spring 3.2.2. Update As of Spring 4, Spring Jira issue SPR-10456 has been resolved. Consequently, the `@Scheduled` annotation has a new zone attribute for exactly this purpose.

Original source

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