I have an Interceptor that wants to put something in the session after the action has executed.
But if the session doesn't already exist I get an exception:
java.lang.IllegalStateException: Cannot create a session after the response has been committed
How can I determine if the session already exists from within an Interceptor?
public String doIntercept(ActionInvocation invocation) throws Exception
String result = invocation.invoke();
Map session = invocation.getInvocationContext().getSession();
session.put(key, value); // throws exception if session doesn't exist