I have a Spring Boot application that uses Spring profiles to create environment specific configurations, for example:
@Configuration
@Profile("local")
public class LocalConfiguration
...
@Configuration
@Profile("prod")
public class ProdConfiguration
...
I have a @RestContoller that needs to access the values that the configurations load from application.properties. How can I inject the current environment specific configuration bean inside the controller?
Example:
@Autowired
private <config_based_on_env_here> config;
@RestController
public String getSomeString() {
return config.getSomeString();
}
Advertisement
Answer
If you need to access values from the application.properties or .yaml configuration you could use a much simpler way for achieving this.
Firstly configure different configs:
application-local.properties
my.value=local-value
application-prod.properties
my.value=prod-value
Create a configuration for reading needed value:
@Configuration
@ConfigurationProperties(prefix = "my")
public class ConfigProperties {
private String value;
// standard getters and setters
}
Finally, you could autowire this configuration at the controller:
@RestController
class MyController {
@Autowire
private ConfigProperties config;
@GetMapping("/hello")
public void hello() {
System.out.println("Config value: " + config.getValue());
}
}
When you run your app with the needed profile – the appropriate config file will be loaded and accessed at the controller.
Also, you could have a look at @Value annotation
Additional resources: