Task scheduling using cron expression from properties file

Question

I have written a cron job:

@Scheduled(cron="${process.virtual.account.start}")
public void ecomProcessVirAccOrderPaymentsScheduler() {
    LOGGER.info("Start --->" + this.getClass().getCanonicalName() + ".ecomProcessVirAccOrderPaymentsScheduler() Method");
    schedulerJobHelper.ecomProcessVirAccOrderPaymentsScheduler();
    LOGGER.info("End --->" + this.getClass().getCanonicalName() + ".ecomProcessVirAccOrderPaymentsScheduler() Method");
}

I want to get the cron attribute used with @Scheduled annotation to be populated from a external properties file. Currently I am fetching it from a property file inside the application scope. I am able to fetch the value, but not able to use it with @Schedule annotation.

score 45 · Answer 1 · edited Jun 14 '19 at 14:19

45

it is working in spring boot.

@Scheduled(cron="${cronExpression}")
private void testSchedule()  {
    System.out.println("Helloooo");
}

in application.properties I have a property like this as below:

cronExpression=* * * ? * *

edited Jun 14 '19 at 14:19

Dherik

17,757
11
115
164

answered Feb 13 '19 at 17:10

karthik akinapelli

710
1
7
14

In which version of spring boot? – NeeruKSingh Jun 29 '21 at 08:48
1

@NeeruKSingh I have tested it in the latest spring boot version V2.5.2 and it is working – karthik akinapelli Jun 30 '21 at 10:19
1

I've tested. This solution is working. Spring v 2.6.2 – Alex Jun 10 '22 at 15:37

Rajeev · Accepted Answer · 2020-07-21T16:53:42.873

Which version of spring framework are you using? This won't work if it is less than 3.0.1.

Bug Report here in Spring 3.0.0 and it has been fixed in 3.0.1.

So if you are using Spring 3.0.1 or greater then following things you have to do to use in cron expression

Make an entry in applicationContext.xml for PropertyPlaceHolderConfigurer class that is

<bean id="placeholderConfig"
    class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="locations">
        <list>
            <value>classpath:ApplicationProps.properties</value>
        </list>
    </property>
</bean>

After That Use it in using the @Scheduled method like

Update: In case if you are using spring boot no need to do anything, below code excerpt should work.

@Scheduled(cron="${instructionSchedularTime}")
public void load(){
}

Note: fixed delay and fixed-rate cann't take property value from placeholder because they take long value. Cron attribute take argument as String so you can use placeholder for that.

As of Spring 3.2.2 you now have: [fixedDelayString](http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/scheduling/annotation/Scheduled.html#fixedDelayString--) and [fixedRateString](http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/scheduling/annotation/Scheduled.html#fixedRateString--) as well. — Håvard Geithus, Jul 09 '15 at 13:59

Gulfam Suleman · Answer 3 · 2018-12-31T12:59:42.020

4

You can assign value directly from property file, i'm using spring boot BTW

@Scheduled(cron = "${com.oracle.fusion.cron}")
public void getInvoiceInterfaceHeader() {

}

edited Dec 31 '18 at 12:59

answered Dec 28 '18 at 06:55

Gulfam Suleman

71
2

score 2 · Answer 4 · answered Nov 26 '18 at 13:52

2

Try something like

@Configuration
@PropertySource("/path/to/file")
public class LoadPropertiesFile{
   //Other project configurations
}

For more, click here

answered Nov 26 '18 at 13:52

sitakant

1,766
2
18
38

Oleh Tatsiun · Answer 5 · 2021-02-17T16:07:37.490

0

For me works in that way:

"#{${cronExpression}}

edited Feb 17 '21 at 16:07

answered Feb 17 '21 at 15:45

Oleh Tatsiun

749
6
7

Very curious as to that syntax and as I am sure others would be benefited by it could you break down the "what/why"? – JGlass Sep 16 '22 at 20:40
This gives error: Caused by: org.springframework.expression.spel.SpelParseException: Expression [* 1 * * * *] @0: EL1070E: Problem parsing left operand – Amit Chaurasia Jul 10 '23 at 20:31

Task scheduling using cron expression from properties file

5 Answers5

Linked