我如何从另一个人那里获得行动课的价值

Question

I have two action classes

public class TokenAction extends Action {
    private ActionForward getToken(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest request,
            HttpServletResponse response) throws IOException {
        String token = generateToken();
        response.setContentType("text/plain");
        response.getWriter().print(token);

        return null;
    }

and

public class ActionTwo extends Action{
    private ActionForward doSomething(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest request,
            HttpServletResponse response)  {
        token = ???
        return actionMapping.findForward("page");
    }

}

How can I get in ActionTwo from TokenAction?

Answer 1

Basically, in Java there are multiple ways to pass objects across contexts, the most popular being likely:

• through static variables (not recommended)
• through shared parameter maps
• through a controller object

In your case, since the parameters passed to the methods seem to have a lifetime that encompasses both calls (although it's hard to say without the specifics), you should probably store them in the parameters ( HttpServletResponse isn't very useful for that purpose, but the ActionMapping and ActionForm likely are). If your Action s are created in the context of some controller, you could use the controller to pass the parameter instead.