Replace environment variables in Spring properties file other than application.properties

Question

Spring Boot will automatically resolve any ${ENV} placeholders in application.properties files, with the respective environment variable.

However such resolution will not happen when I provide a quartz.properties through a PropertiesFactoryBean file for Quartz configuration.

@Bean
public Properties getQuartzProperties() throws IOException {
    PropertiesFactoryBean propertiesFactoryBean = new PropertiesFactoryBean();
    propertiesFactoryBean.setLocation(new ClassPathResource("/quartz.properties"));
    propertiesFactoryBean.afterPropertiesSet();
    return propertiesFactoryBean.getObject();
}

Is there any Spring way of replacing these environment variables in the property file without utilising an external library?

Answer 1

You can declare a new class to provide the properties (annotated with @Configuration) and also mention the @PropertySource

@Configuration
@PropertySource("classpath:quartz.properties")
public class QuartzConfig {
      //...
}

In this way your spring boot application can read as many properties file as you want.