I have cleared the catch both in jsp file and in server side, and wondering what is the reason of the problem?
I mean in other way like using xml instead of json, I think they are not big difference between them, just the data format difference.
I got another problem, in struts 1, I usually handle the request and forward reponse to a jsp file , as result jsp file got a form. Now I use ajax to call the action, the action handle request and convert java object to json ( ), how could I get that from jsp file? As I know, strus only forward the action form to jsp file.