11g Passing a backing hasmap to a servlet

Question

Hi,
I want to generate a image in a servlet and stream this back to the jsf page where it is shown in the 11g jsf page
in jdev 10.1.3 I had a session hashmap in faces-config.xml
<managed-bean>
<managed-bean-name>ImageParametersBean</managed-bean-name>
<managed-bean-class>java.util.HashMap</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
In a backing bean I got a reference to this hashmap by using this code
FacesContext fctx = FacesContext.getCurrentInstance();
return (HashMap)fctx.getApplication().createValueBinding("#{ImageParametersBean}").getValue(fctx);
I could read this hashmap in the servlet with this code
HttpSession sess = request.getSession();
HashMap parameters = (HashMap)sess.getAttribute("ImageParametersBean");
In 11g I use this code to get a reference to the hashmap
private HashMap getHashMap() {
FacesContext fc = FacesContext.getCurrentInstance();
Application app = fc.getApplication();
ExpressionFactory elFactory = app.getExpressionFactory();
ELContext elContext = fc.getELContext();
ValueExpression valueExp = elFactory.createValueExpression(elContext, "#{ImageParametersBean}", Object.class);
return (HashMap) valueExp.getValue(elContext);
But when I want to get a handle to this hashmap from a servlet it is everytime null.
How can I pass the hashmap with variables to the servlet.
thanks Edwin

Answer 1

Hi ,
I already solved it , the url of the jsf app and servlet must be same and the url must be the full domain name
so don't use http://localhost:7101 and for the servlet http://machine.work.local :7101 else this is a new session.
thanks Edwin