CODEWITHSUNDEEP
javaspringspring-bootproperties-file
drenda
drenda

Reputation: 6244

Spring Read value from properties file into @SpringBootApplication class

I've a SpringBootApplication and I want read a value from my property file.

My @SpringBootApplication class is this:

@SpringBootApplication
@ComponentScan(basePackages = "it.test")
@PropertySource("classpath:application.properties")
public class Application {
      private static Logger log = LogManager.getLogger();

      @Value("${server.modem.delay}")
      private int modemSmsDelay;

     @Order(Ordered.HIGHEST_PRECEDENCE)
     @Bean(initMethod = "start", destroyMethod = "stop")
     public Service smsService() {      
         settings();
         Service service = Service.getInstance();       
         return service;
     }
      private void settings() {     
           log.debug("Delay per invio sms " + modemSmsDelay +"ms");     
            Settings.gatewayDispatcherYield = modemSmsDelay;
     }
}

Unfortunately in in method called "settings" the value of property modemSmsDelay is 0 also if in my application.properties file it's 1000.

In other parts of my app I can read values without problems.

==== UPDATE =====

I solved the problem. Infact my code works, is not needed @PostConstruct to make @Value tag work, also if it's desiderable in several circustances. I had a problem in my Spring configuration that prevented the execution of all annotation as @PostConstruct,@Autowire, etc. I noticed this from log where Spring printed a Warning message.

Upvotes: 1

Views: 2857

Answers (2)

JRichardsz
JRichardsz

Reputation: 16495

This works for me :

@Resource private Environment environment;

import javax.annotation.Resource;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.web.SpringBootServletInitializer;
import org.springframework.context.annotation.Bean;
import org.springframework.core.env.Environment;

import my.beautiful.code.SomeClient;

@SpringBootApplication
public class Application extends SpringBootServletInitializer {

  @Resource
  private Environment environment;

  @Override
  protected SpringApplicationBuilder configure(final SpringApplicationBuilder application) {
    return application.sources(Application.class);
  }

  @Bean(name = "someClient")
  public SomeClient loadSomeClient() {
      SomeClient bean = new SomeClient();
      ...
      bean.setHeaderContentType(environment.getProperty("contentType"));
      bean.setRestUrl(environment.getProperty("rest.url"));   
      ...
      return bean;
  }

  public static void main(final String[] args) {
    SpringApplication.run(Application.class, args);
  }

}

And in my application.properties

contentType=some_value
rest.url=http://localhost/....

HTH

Upvotes: 0

Steve Cohen
Steve Cohen

Reputation: 4859

Try putting the @PostConstruct annotation on your settings() method rather than calling it from the constructor. This will cause the method to be called automagically after the constructor exits.

Upvotes: 1

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