在Custom portlet中嵌入outofbox portlet

Question

我试图在我的自定义portlet中嵌入日历portlet。但是无法实现这一目标。我收到以下错误：

javax.servlet.ServletException: javax.servlet.jsp.JspException:
    ServletException in '/html/common/themes/portlet.jsp': 

File "/html/common/themes/portlet.jsp" not found
    at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:911)

这是我的班级：

public class Hello extends MVCPortlet {

    public void doView(RenderRequest request, RenderResponse response) 
                    throws IOException, PortletException {

        final String portletId = "47"; //hello world portlet id

        final ThemeDisplay themeDisplay = (ThemeDisplay) request.getAttribute(WebKeys.THEME_DISPLAY);
        HttpServletRequest req = PortalUtil.getHttpServletRequest(request);

        HttpServletResponse res = (HttpServletResponse) request.getAttribute(PortletServlet.PORTLET_SERVLET_RESPONSE);

        ServletContext servletContext = req.getSession().getServletContext();

        PortletPreferences prefs = null;

        try {
            // get the portlet preferences
            prefs = PortletPreferencesFactoryUtil.getPortletPreferences(req, portletId);
        } catch (PortalException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (SystemException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        System.out.println("portlet preferences are " + prefs.toString());

        //method 3
        PortletPreferences originalPrefs = null;

        try {
            originalPrefs = PortletPreferencesFactoryUtil.getStrictLayoutPortletSetup(
            themeDisplay.getLayout(), portletId);
        } catch (SystemException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        PortletPreferences targetPrefs = null;

        try {
            targetPrefs = PortletPreferencesFactoryUtil.getStrictLayoutPortletSetup(
            themeDisplay.getLayout(), portletId);
        } catch (SystemException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        for (java.util.Map.Entry<String, String[]> entry : targetPrefs.getMap().entrySet()) {
            targetPrefs.reset(entry.getKey());
        }

        for (java.util.Map.Entry<String, String[]> entry : originalPrefs.getMap().entrySet()) {
            targetPrefs.setValues(entry.getKey(), entry.getValue());
        }

        // Store preferencec.
        targetPrefs.store();

        try {
            //finally render the portlet
            final String portletHtml = RuntimePortletEmbedUtil.renderPortlet(request, response, portletId, "");
        } catch (SystemException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (ServletException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

对portlet嵌入的任何见解，我已经尝试过this blog的建议，但没有帮助。

有任何建议或方法可以实现这一目标吗？

我想有一些问题需要获得正确的portlet首选项和权限，以便在目标portlet上添加一个portlet。

如果您找到问题的解决方案，请更新。