Get the sessionID in an EJB

Question

Hello,
I would like to add the session ID as an extra info in my log (log=DB).
There is no problem when I use a Servlet but in an EJB this information doesn't exists any more. Where can I put this session ID to avoid to pass it in parameter ? I prefer avoid to store it in the Principal.
Thx in advance

Answer 1

If you go the ThreadLocal route, try setting it with a filter:
public class SessionAccess {
    private static final ThreadLocal SESSION_IDS = new ThreadLocal();
    public static String getId() {
        return (String)SESSION_IDS.get();
    public static void setId(String id) {
        SESSION_IDS.set(id);
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
public class SessionAccessFilter implements Filter {
    private FilterConfig filterConfig;
    public SessionAccessFilter() {
        super();
    public void init(FilterConfig filterConfig) throws ServletException {
        this.filterConfig = filterConfig;
    public void destroy() {
        this.filterConfig = null;
    public void doFilter(ServletRequest request,
                         ServletResponse response,
                         FilterChain chain) throws IOException, ServletException {
        HttpSession session = ((HttpServletRequest)request).getSession(true);
        String sessionId = session.getId();
        try {
            SessionAccess.setId(sessionId);
            chain.doFilter(request, response);
        } finally {
            SessionAccess.setId(null);
}Then, in your EJB, you should be able to access the session id with:
String sessionId = SessionAccess.getId();