Interceptors provide an excellent means to wrap before/after processing. The concept reduces code duplication (think AOP).
Order of interceptors...
| Code Block |
|---|
<interceptor-stack name="xaStack"> <interceptor-ref name="thisWillRunFirstInterceptor"/> <interceptor-ref name="thisWillRunNextInterceptor"/> <interceptor-ref name="followedByThisInterceptor"/> <interceptor-ref name="thisWillRunLastInterceptor"/> </interceptor-stack> |
Note that some interceptors will interrupt the stack/chain/flow... so the order is very important.
Iterceptors implementing com.opensymphony.xwork.interceptor.PreResultListener will run after the Action executes its action method but before the Result executes
| Code Block |
|---|
thisWillRunFirstInterceptor
thisWillRunNextInterceptor
followedByThisInterceptor
thisWillRunLastInterceptor
MyAction1
MyAction2 (chain)
MyPreResultListener
MyResult (result)
thisWillRunLastInterceptor
followedByThisInterceptor
thisWillRunNextInterceptor
thisWillRunFirstInterceptor
|