return new ForwardResolution(sourcePage);
if (sourcePage == null) { throw new IllegalStateException( "Here's how it is. Someone (quite possible the Stripes Dispatcher) needed " + "to get the source page resolution. But no source page was supplied in the " + "request, and unless you override ActionBeanContext.getSourcePageResolution() " + "you're going to need that value. When you use a <stripes:form> tag a hidden " + "field called '" + StripesConstants.URL_KEY_SOURCE_PAGE + "' is included. " + "If you write your own forms or links that could generate validation errors, " + "you must include a value  for this parameter. This can be done by calling " + "request.getServletPath()."); } else { return new ForwardResolution(sourcePage); }
    public Resolution getSourcePageResolution() {        String sourcePage = request.getParameter(StripesConstants.URL_KEY_SOURCE_PAGE);        return new ForwardResolution(sourcePage);    }