Help! Communication between portlets on diffrence pages

Question

I have two portal pages (A, B) including two portlets (A', B'). When click a link on portlet in page A, i want to redirect to page B and pass parameter to porlet B'.
I tried using Portlet Event but it seem that they just only communicate with each other on the same page.
Can anyone help me?
Thanks very much!

Answer 1

Ok.
Assuming that you have configured portlet.xml with public-render-parameter associated to your portlet. For example:
<portlet id="...">
<supported-public-render-parameter>yourparam</supported-public-render-parameter>
</portlet>
<public-render-parameter>
        <identifier>yourparam</identifier>
        <name>yourparam</name>
</public-render-parameter>And you created your page_parameter.
Now in runtime when you add your portlet assign value from page parameter in parameters tab.
In your portlet you can get your parameter with
PortletRequest req = (PortletRequest)FacesContext.getCurrentInstance().getExternalContext().getRequest();     
String location = req.getParameter("yourparam");PD: Wiring by parameters is so "old", you can try with Contextual Events too :). I recommed you starting to know Contextual Events framework to wire information between task flows, portlets, ui components...
Basically with contextual events you have to:
1) Create a handler method.
2) Create a Data Control from your Java Handler class.
3) Publish in binding layer your method.
4) Publish a event in your page.
5) Configure Event map: event published - your method consumer
Off doc about wiring: http://docs.oracle.com/cd/E14571_01/webcenter.1111/e10149/pages_wiring.htm#BABIIGDD
I hope you'll achieve your goal :).
Regards.