Spring provides support for using AspectJ annotations to create aspects and we will be using that for simplicity. All the above AOP annotations are defined in org.aspectj.lang.annotation package. Spring Tool Suite provides useful information about the aspects, so I would suggest you use it.
Why to use Spring AOP AspectJ AOP implementation?
The Spring Framework recommends you to use Spring AspectJ AOP implementation over the Spring 1.2 old style dtd based AOP implementation because it provides you more control and it is easy to use. There are two ways to use Spring AOP AspectJ implementation:
How many types of advices are there in Spring AOP?
There are 4 types of advices supported in spring1.2 old style aop implementation. Before Advice it is executed before the actual method call. After Advice it is executed after the actual method call. If method returns a value, it is executed after returning value.
What is the use of @pointcut annotation in spring?
It is applied if actual method throws exception. Pointcut is an expression language of Spring AOP. The @Pointcut annotation is used to define the pointcut. We can refer the pointcut expression by name also. Let’s see the simple example of pointcut expression. @Pointcut(“execution (* Operation.*
What is the use of AOP + AspectJ in spring?
In simple, Spring AOP + AspectJ allow you to intercept method easily. Common AspectJ annotations : @AfterReturning – Run after the method returned a result, intercept the returned result as well.
How to use Spring AOP in spring beans?
For using Spring AOP in Spring beans, we need to do the following: 1 Declare AOP namespace like xmlns:aop=” 2 Add aop:aspectj-autoproxy element to enable Spring AspectJ support with auto proxy at runtime 3 Configure Aspect classes as other Spring beans More
How to use ARGs() expression in pointcut?
We can use args () expression in the pointcut to be applied to any method that matches the argument pattern. If we use this, then we need to use the same name in the advice method from where the argument type is determined. We can use Generic objects also in the advice arguments.
