I don't use this method to externalise properties. First, I'll try a suggestion for your method and then I'll show you what I'm using.
The suggestion for your method is to use file:/// instead of file:/ as with Spring I found that when not passing the three slashes after the colon it didn't recognise the property.
I've created a sample project for you, available here with instructions.
Now for the method I use.
I define a Configuration file for each profile and I keep the application.properties file under src/main/resources.
Then I use the @Profile and @PropertySource annotations on each configuration file.
For example:
@Configuration
@Profile("dev")
@PropertySource("file:///${user.home}/.devopsbuddy/application-dev.properties")
public class DevelopmentConfig {
@Bean
public EmailService emailService() {
return new MockEmailService();
}
@Bean
public ServletRegistrationBean h2ConsoleServletRegistration() {
ServletRegistrationBean bean = new ServletRegistrationBean(new WebServlet());
bean.addUrlMappings("/console/*");
return bean;
}
}
And
@Configuration
@Profile("prod")
@PropertySource("file:///${user.home}/.devopsbuddy/application-prod.properties")
public class ProductionConfig {
@Bean
public EmailService emailService() {
return new SmtpEmailService();
}
}
I have also got a Configuration file that is valid for all profiles, which I call ApplicationConfig, as follows:
@Configuration
@EnableJpaRepositories(basePackages = "com.devopsbuddy.backend.persistence.repositories")
@EntityScan(basePackages = "com.devopsbuddy.backend.persistence.domain.backend")
@EnableTransactionManagement
@PropertySource("file:///${user.home}/.devopsbuddy/application-common.properties")
public class ApplicationConfig {
}
My src/main/resources/application.properties file looks like the following:
spring.profiles.active=dev
default.to.address=me@example.com
token.expiration.length.minutes=120
Of course I could externalise the spring.profile.active property by passing it as a system property but for my case and for now it's fine.
When running the application, if I pass the "dev" profile, Spring will load all properties and Beans defined in the DevelopmentConfig class plus all those in ApplicationConfig. If I pass "prod", the ProductionConfig and ApplicationConfig properties will be loaded instead.
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