Have a look at the ExceptionMappingInterceptor, with a bit of tweaking I believe you can achieve what you want.
http://struts.apache.org/release/2.0.x/struts2-core/apidocs/com/opensymphony/xwork2/interceptor/ExceptionMappingInterceptor.html Antonios On 29 October 2013 10:15, Vaishampayan, Shailesh Arvind < svaishampa...@inautix.co.in> wrote: > > > > > > I am working with an application involving Struts2 in web layer and Spring > in business layer. I also have BusinessException class which will be used > by all business services to create business related validation failures > which must go up to web layer and should be shown to users as validation > message(s). I can easily do this by writing in my Action class: > > ClientAction extends ActionSupport throws Exception{ > > .... > > try{ > > clientService.searchClient(); > > }catch(InvalidClientSearchCriteriaException e){ > > addActionMessage("Invlid Search Criteria"); > > } > > ... > > And similar code in every action class. However i dont want to pollute my > action classes with try catch blocks. Instead it would be much better if i > can write on try catch block at one place and catch all the exceptions > there as BusinessExceptions and create messages /errors from embedded > messages/errors in those exceptions. One approach i could think of was to > use interceptor or preresult listener. But I cannot use interceptor like > below which catches BusinessExceptions thrown from action classes... > > ExceptionInterceptor extends AbstractInterceptor(ActionInvocation > ivocation,...){ > > try{ > > invocation.invoke(); > > }catch(Exception e){ > > if(e instanceof BusinessException){ > > ActionSupport as = > (ActionSupport)invocation.getAction(); > > String message = > extractMessagefromException()//--custom method to extract message embedded > in exception. > > as.addActionMessages(message); > > //-- above will not work result has already been rendered right? and > hence it wouldn't matter if i add action messages now. > > } > > } > > } > > Second approach of using pre-result listener is to add action messages > just like above in pre-result listener's method, as result is yet to be > rendered and I can safely change that. However I am not sure if pre-result > listener will ever execute, if exception is thrown in action ? And even if > it does, how i can get the exception object thrown by the action ? > > Please let me know any other approach by which i don't have to clutter my > classes with try-catch block > > > > > ****************************************************** > This message and any files or attachments sent with this message contain > confidential information and is intended only for the individual named. If > you are not the named addressee, you should not disseminate, distribute, > copy or use any part of this email. If you have received this message in > error, please delete it and all copies from your system and notify the > sender immediately by return Email. > > Email transmission cannot be guaranteed to be secure or error-free as > information can be intercepted, corrupted, lost, destroyed, late, > incomplete or may contain viruses. The sender, therefore, does not accept > liability for any errors or omissions in the contents of this message, > which arise as a result of email transmission. > ******************************************************
