Defining an Aspect
Explore how to define an aspect in Spring AOP for intercepting method calls in the business layer. Understand how to write advice methods, create pointcut expressions, and use join points to implement cross-cutting concerns such as access checking. This lesson helps you modularize tasks before and after method execution for maintainable and secure applications.
We'll cover the following...
In this lesson, we will define an aspect to intercept all the calls to the business layer and log their output. We will create a number of aspects and place all of them in a separate package.
When we intercept method calls, we have the option to perform tasks before the method is executed as well as afterwards. To define an aspect for a cross-cutting concern, we will perform the following steps:
Define aspect class.
Write methods containing the advice to be executed when method calls are intercepted.
Write pointcut expressions for intercepting method calls.
Aspect
Suppose we want to intercept method calls to check if the user has access ...