Let's see the use of @Before annotation:
//Before transfer service
@Before("execution(* com.packt.patterninspring.chapter6.
bankapp.service.TransferService.transfer(..))")
public void validate(){
System.out.println("bank validate your credentials before amount
transferring");
}
//Before transfer service
@Before("execution(* com.packt.patterninspring.chapter6.
bankapp.service.TransferService.transfer(..))")
public void transferInstantiate(){
System.out.println("bank instantiate your amount transferring");
}
Note--if the advice throws an exception, target will not be called--this is a valid use of a Before Advice.
Now you have seen the before advice, let's have a look into another type advice.