Interportlet Communication using Public Render Parameters
Create two portlets named as PortletA and PortletB with classes PortletActionA, PortletActionB.
IN PortletA , do below things:
-----------------------------------
portlet.xml --> IN portlet configuration mention the below line :
<supported-public-render-parameter>firstName</supported-public-render-parameter>
after ending the portlet tag give the below lines:
<public-render-parameter>
<identifier>firstName</identifier>
<qname xmlns:x="http://sun.com/params">x:firstName</qname>
</public-render-parameter>
Repeat the above thing in PortletB also...
In Portlet A:-
PortletActionA Class:-
set the render parameter as below like:
public void portletAActionURL(ActionRequest actionRequest, ActionResponse actionResponse){
System.out.println("portletA callign");
actionResponse.setRenderParameter("firstName", "devi");
}
In PortletB :-
doview() method write below code:
String firstname =renderRequest.getParameter("firstName");
System.out.println("firstname == "+firstname);
renderRequest.setAttribute("firstname", firstname);
Then u will observe the value in your jsp as
renderRequest.getAttribute("firstName") and print this..
