Why is using considered best practice? Your layer classes should have your DAO Spring beans dependency injected into them thereby achieving a clean separation of concern. Meaning that it’s intent is to clearly identify and document your applications business layer’s entry point (AKA: Your Service Layer). The commonly repeated answer given is “intent”. However, one annotation from this group does not do anything extra! None is more confusing than the annotation. – does nothing special, What? I’m confused!Īt this point it should be clear that we could directly use to wire up our Java Classes as Spring beans and inherit the magic of Dependency Injection via annotations like these stereotype annotations were created to introduce some specialized functionality (they actually do something that doesn’t).– Java based configuration/code representing a factory to create Spring beans.– Vendor neutral Exception Translation Service on DAO Classes – DataAcessException.or – Web Layer services like mapping HTTP request to handler methods and processing response.– Identifies a Java Class that is to be registered as a Spring Bean.Here are some common suspects that you will comes across … Spring Stereotype annotations Our applications may be using many stereotype annotations to identify different boundaries/layers of our application. Essentially, if your annotation is of type it gets picked up. What are stereotype annotations? These annotations are used to create Spring beans automatically in the application context by scanning for anything of type Once Spring has your beans in the application context via its classpath scanning, it can perform autowiring for you. The annotation is the parent in a hierarchy of annotations categorized as stereotype annotations. In Spring we have annotations that can represent different layers of our applications, therefore provide some type of service. In this post, you’ll learn when and why you should favor the over annotation through some actual use cases. Views: 17,217 Reading Time: 6 minutes Are you confused on what’s the difference between and in Spring? Your not alone! The confusion over when to use vs.
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