Can JSP and EJB share httpsession? Can the content in the session be changed in EJB?

I can see some netizens mentioned this problem and asked for more information. In fact, both of these questions have positive answers, but it is best not to do so.
If all the objects in the session are serialized, you can pass httpsession as a parameter to the EJB method. In this way, the value is passed, which is equivalent to the fact that the httpsession is read by itself, if the session value is changed in EJB, The httpsession In the servlet container will not be affected, but because the remote interfaces of EJB use remote reference, that is, reference transmission, therefore, it is possible to pass httpsession as a parameter to the EJB object, but this is against the object-oriented principle, in this case, an unnecessary dependency is created between the EJB and the front-end httpsession, in this case, ejbs also depend on HTTP-based clients (ejbs may also serve non-HTTP clients). In fact, instead of passing an entire httpsession object to ejbs, it is better to create another object with a similar structure, and then return to the client after processing the EJB.