get HttpSession|Request from simple java class not servlet class

Question

i want session Object not in servlet class but ordinary from we application.

WEB.XML

Answer 1

There are multiple ways to do that, but.. don't. Only your web layer should have access to the session. The other layers should only get the parameters from the session that it needs. For example:

service.doSomeBusinessLogic(
     session.getAttribute("currentUser"), 
     session.getAttribute("foo"));

The options that you have to obtain the request, and from it - the session in a non-servlet class, that is still in the web layer:

• store the request in a ThreadLocal in a Filter (and clean it afterwards)
• pass it as argument - either in constructor (if the object is instantiated on each request) or as method argument.