The Java properties file can be used to store project configurations or settings.
constant.properties
ui.defaultIconUrl=graph.facebook.com/ek.pranav/picture
Environment – Interface representing the environment in which the current application is running.
@Configuration – Configuration classes are candidates for component scanning (typically using Spring XML’s <context:component-scan/> element) and therefore may also take advantage of @Autowired/@Inject at the field and method level (but not at the constructor level).
@PropertySource – Adds property sources to the enclosing Environment.
The values in the properties can be accessed by injecting Environment object to the configuration class.
ConstantPropertyInjector.java
@Configuration
@PropertySource("classpath:META-INF/constant.properties")
public class ConstantPropertyInjector {
@Autowired Environment env;
@Bean
public ConstantImageHolder getConstantProperty(){
ConstantImageHolder constant = new ConstantImageHolder ();
constant.setDefaultIcon(env.getProperty("ui.defaultIconUrl"));
return constant;
}
}
Advertisements
