title: Read properties by dynamic keys in spring boot
body: <p>I wanted to know if there is any way in Spring Boot to read property values from properties file by using <em>Dynamic Keys</em>. I know properties can be put in <code>application.properties</code> and can be read using <code>@Value("propertyKey")</code> But my keys are going to be dynamic. </p>
  
  <p>I know about <code>@PropertySource</code> to read property values and I can construct my keys dynamically. So is there any way that is provided by Spring Boot?</p>