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Tip of the Day
Language: Java
Expertise: Intermediate
May 5, 2011

Using EJB Interceptors for Java EE Audits

Enterprise JavaBeans (EJB) 3.0 provided the ability to intercept EJB business methods by using AroundInvoke interceptors. Based on these interceptors, you can access the method name, its parameters, and its EJB context.

You also can perform tasks such as security checks, logging, auditing or frequently changing the values of method parameters in your Java EE applications using EJB interceptors.

Here is a simple EJB interceptor:

public class MyInterceptor { 

  private EJBContext context; 
  protected Object audit(InvocationContext ctx) throws Exception { 
    Principal principal = context.getCallerPrincipal(); 
    if (userIsValid(principal)) { 
      //TODO logging here 
           //TODO logging & exception
    return ctx.proceed(); 

To use this interceptor, you need only to place an annotation on the designated EJB, like this:

public class MyBean { 
  // TODO
Leonard Anghel
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