Before Annotation
Marks an action method that needs to be executed before the main action method.
Usage
The Before annotation can be applied at method level.
Parameters
- priority(optional) - Priority order of method execution, default: 10
Examples
 public class SampleAction extends ActionSupport {
  @Before
  public void isAuthorized() throws AuthenticationException {
    // authorize request, throw exception if failed
  }
  public String execute() {
     // perform secure action
     return SUCCESS;
  }
 }
