CODEWITHSUNDEEP
spring-boot
quma
quma

Reputation: 5733

Spring @ConditionalOnProperty - how to make it work

I have this component- class and if the property accounting.generalServiceConfig.accountPageSize is in application.properties than a log entry should be written into the log file. But with this class at bottom it does not work. If I add the annotation @Bean at method printAccountPageSize and return e.g. new Object() than it works. Is there a possibility to make it work with the class like it is alt the bottom?

@Component
public class ConditionalPropertyChecker extends AbstractService {

    protected final Logger logger = LoggerFactory.getLogger(getClass());

    public ConditionalPropertyChecker() {
    }

    @ConditionalOnProperty(name = "accounting.generalServiceConfig.accountPageSize")
    public void printAccountPageSize() {
        logger
            .info("the accountPageSize is set in application.properties");
    }
}

Upvotes: 1

Views: 2792

Answers (2)

Ivan Xue
Ivan Xue

Reputation: 909

In my case, I have totally different properties filename, it seems like @ConditionalOnProperty can only read properties in the application.properties or application.yml. I tried to add annotation like @PropetySource, still not working.

Once I add for example application.properties in my project, my class (not only bean, but also component, service, etc) can conditionally be initialized perfectly. However,I don't want to add a new properties file (i.e. application.properties) in the project only because of this annotation. If someone has a more decent solution, please comment below:) Otherwise, I have to create the object manually.

Upvotes: 0

Strelok
Strelok

Reputation: 51451

@ConditionalOnProperty is for @Configuration classes producing @Bean.

You can do this:

@Component
public class ConditionalPropertyChecker extends AbstractService {

    protected final Logger logger = LoggerFactory.getLogger(getClass());

    public ConditionalPropertyChecker(@Value("${accounting.generalServiceConfig.accountPageSize}") Integer pageSize) {
      if (pageSize) {
        logger.info("the accountPageSize is set in application.properties");
      }
    }
}

Upvotes: 1

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