How to put object in ThreadLocal in Struts 2?

Question

I am trying to open Hibernate Session on each request and close it at the end.

This seems like it could work, but I have now idea how am I supposed to put my Session object in ThreadLocal and answer does not explain that.

Is there any Struts2 specific way to do this?

Spring can manage Hibernate session for you. Look for Spring OpenSessionInViewFilter. — Aleksandr M, Feb 05 '13 at 19:54

score 1 · Accepted Answer · answered Feb 05 '13 at 19:54

You can add a HttpFilter that is in front of the Struts2 Servlet. In the filter:

public class SessionProviderFilter implements Filter {
    private static ThreadLocal<Session> sessionStore = new ThreadLocal<Session>();


    public void doFilter(...) {
        Session session = ... // get the session
        sessionStore.set(session);
        chain.doFilter(...);
        sessionStore.set(null);
   }

   public static Session getCurrentSession() {
        return sessionStore.get();
   }
}

Now from any code, to get current hibernate session, you call SessionProviderFilter.getCurrentSession().

How to put object in ThreadLocal in Struts 2?

1 Answers1