kapok

级别: 中级

public class HelloWorld extends AbstractPortlet implements ActionListener
{
  public void doView (PortletRequest request, PortletResponse response)
   throws PortletException, IOException
    {
   //Get the user's name to display from persistent storage
   PortletData portletData = request.getData();
   String stringToDisplay=(String)portletData.getAttribute("userName");

   if (stringToDisplay == null) {
       stringToDisplay = defaultString;    // set default string
   }

   // Add the display string to the portlet request to make it 
   // accessible by the view JSP
   request.setAttribute("userName", stringToDisplay);

   // Get a context for the current session for invoking the JSP
   PortletContext context = getPortletConfig().getContext();
   context.include(viewJSP, request, response);
    }

    public void doEdit(PortletRequest portletRequest, 
        PortletResponse portletResponse )
      throws PortletException, IOException
    {
   // Create the cancel return URI for the edit page
   PortletURI cancelURI = portletResponse.createReturnURI();
   // Preserve the Cancel URI in the request to make it 
   // accessible by the edit JSP
   portletRequest.setAttribute("cancelURI", cancelURI.toString());

   // Create the save URI for the edit page
   PortletURI saveURI = portletResponse.createReturnURI();
   // For the "Save" button the return URI must include the "Save" action
   //    so the Action Listener for this portlet will be invoked       
   SimpleActionHelper.
   addSimplePortletAction(getPortletConfig().getContext(), saveURI, "save");

   // Preserve the Save URI in the request to make it accessible by 
   // the edit JSP
   portletRequest.setAttribute("saveURI", saveURI.toString());

   //Get the user's name to display from persistent storage
   String stringToDisplay = (String) 
        portletRequest.getData().getAttribute("userName");
   if (stringToDisplay == null) {
       stringToDisplay = defaultString;    // none found, set default string
   }

   // Add the display string to the request to make it accessible by the 
   // edit JSP as an inital value of the input field on the edit form
   portletRequest.setAttribute("userName", stringToDisplay);

   // Get a context for the current session for invoking the JSP
   PortletContext context = getPortletConfig().getContext();
   context.include(editJSP, portletRequest, portletResponse);
    }
    
public void actionPerformed(ActionEvent event) {
    String action = 
    SimpleActionHelper.getActionString(getPortletConfig().getContext(),
            event);
    HelloWorld helloPortlet = (HelloWorld)event.getPortlet();
    PortletLog log = helloPortlet.getPortletLog();

    // If this is a save action, then see if the user specified a name
    if ( action!=null ) {
      if ( action.equals("save") ) {
       PortletRequest request = event.getRequest();
       PortletData portData = request.getData();
       String userName = request.getParameter("userName");
       try {
       // Save the name specified by the user
         if ( userName != null ) {
         portData.setAttribute("userName", userName);
         portData.store();
      }
      } catch ( AccessDeniedException ade ) {
      } catch ( IOException ioe ) {
       log.error( "
        
          Couldn't write the user date to 
persistence because an I/O Error occurred.
        " );
      }
     }
    }
  }
}     

                                
      

public class HelloWorld extends 
        GenericPortlet
{
  public void doView (
        RenderRequest request, 
        RenderResponse response)
   throws PortletException, IOException
   {
   //Get the user's name to display from persistent storage
   Portlet
        Preferences portletData = request.get
        Preferences();  String stringToDisplay = (String) portletData.get
        Value("userName",
        defaultString);

   // Add the display string to the portlet request to make it 
   // accessible by the view JSP
   request.setAttribute("userName", stringToDisplay);

   // Get a context for the current session for invoking the JSP
   
        PortletRequestDispatcher rd = getPortletContext().getRequestDispatcher(viewJSP);      
   rd.include(request, response);

    }
    public void doEdit(
        RenderRequest portletRequest, 
        
        RenderResponse portletResponse )
      throws PortletException, IOException
    {
   // Create the cancel URI for the edit page
   PortletUR
        L cancelURI = portletResponse.create
        ActionUR
        L();

   // Preserve the Cancel URI in the request to make it 
   // accessible by the edit JSP
   portletRequest.setAttribute("cancelURI", cancelURI.toString());

   // Create the save URI for the edit page
   PortletUR
        L saveURI = portletResponse.create
        ActionUR
        L();

   // For the "Save" button the return URI must include the "Save" action
   // so the Action Listener for this portlet will be invoked
   
        saveURI.setParameter("action", "save");

   // Preserve the Save URI in the request to make it accessible by 
   // the edit JSP
   portletRequest.setAttribute("saveURI", saveURI.toString());

   //Get the user's name to display from persistent storage
   String stringToDisplay = portletRequest.get
        Preferences().get
        Value("userName", 
                             
        defaultString);

   // Add the display string to the request to make it accessible by the edit JSP
   // as an inital value of the input field on the edit form
   portletRequest.setAttribute("userName", stringToDisplay);

       // Get a context for the current session for invoking the JSP
   
        PortletRequestDispatcher rd = getPortletContext().getRequestDispatcher(editJSP);
   rd.include(portletRequest, portletResponse);
    }

  public void 
        processAction(ActionRequest request, ActionResponse response) 
    throws PortletException, IOException 
  {
    String action = 
        request.getParameter("action");

  // If this is a save action, then see if the user specified a name
  if ( action!=null ) {
      if ( action.equals("save") ) {
   Portlet
        Preferences portData = request.get
        Preferences();
   String userName = request.getParameter("userName");
   // Save the name specified by the user
   if ( userName != null ) {
     portData.setAttribute("userName", userName);
     portData.store();
   }
  }