RequestDispatcherTask.java 文件源码

public void perform(TaskRequest req, TaskResponse res) {

        RenderRequest preq = (RenderRequest) request.evaluate(req, res);
        RenderResponse pres = (RenderResponse) response.evaluate(req, res);
        String rsc = (String) resource.evaluate(req, res);

        try {

            // Load the PortletRequest...
            for (String key : req.getAttributeNames()) {
                preq.setAttribute(key, req.getAttribute(key));
            }

            PortletRequestDispatcher prd = preq.getPortletSession(true).getPortletContext().getRequestDispatcher(rsc);
            prd.include(preq, pres);

        } catch (Throwable t) {
            String msg = "Error dispatching to the specified resource:  " + rsc;
            throw new RuntimeException(msg, t);
        }

    }