Inject environment variable to annotation value with Spring

Question

I use Spring 4. I run Spring context like:

AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
    context.scan(BASE_PACKAGE);
    context.refresh();

I use injecting of environment variables like:

@Value("#{systemEnvironment['ENV_VAR'] ?: 60}")
private int someDelay;

And it works pretty fine.

The question is how to make this work:

@Scheduled(fixedDelayString = "${ENV_VAR ?: 60000}")
public void runSomeTask(){
    System.out.println("hello ");
}

Now spring throws exception:

Initialization of bean failed; nested exception is java.lang.IllegalStateException: Encountered invalid @Scheduled method 'runSomeTask': Invalid fixedDelayString value "${ENV_VAR ?: 60000}" - cannot parse into integer

I suppose I need to create a BeanPostProcessor which is responsible for processing such values, but I have no idea which one exactly.

P.S. It works fine with Spring Boot out of the box.

What is wrong with `Scheduled(fixedDelayString = "("#{systemEnvironment['ENV_VAR'] ?: 60000}")`? — Jens, Jan 17 '18 at 12:06
@Jens the same exception actually as with `"${ENV_VAR ?: 60000}"` — , Jan 17 '18 at 12:25
Alternatively, you can do something like this https://stackoverflow.com/a/2602676/1654233 — yegodm, Jan 17 '18 at 14:21
@Jens `Initialization of bean failed; nested exception is java.lang.IllegalStateException: Encountered invalid @Scheduled method 'runSomeTask': Invalid fixedDelayString value "#{systemEnvironment['ENV_VAR'] ?: 60000}" - cannot parse into integer` — , Jan 17 '18 at 15:00

score 0 · Answer 1 · answered Jan 18 '18 at 14:36

0

Try with this :

#{'${ENV_VAR}' == null ? '60000' : '${ENV_VAR}' }

answered Jan 18 '18 at 14:36

harsh tibrewal

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Inject environment variable to annotation value with Spring

1 Answers1