Difference between AOP and Interceptor

[Naresh Shanmugam]

If a project is designed using Spring and Struts2, can somebody tell when to use Interceptor in Struts2 and When to use AOP in Spring. This is always confusing us.

[David Newton]

Use S2 interceptors when it's something related only to the normal S2 flow and/or need access to S2 infrastructure. Use AOP for everything else.

[Naresh Shanmugam]

need access to S2 infrastructure

David could you please give me an example for this.

[David Newton]

Something on the value stack, like the action.

[Naresh Shanmugam]

Got the point. Thanks for your valuable time David