Session作り直し

gistfile1.java

final Map<String, Object> attributes = new HashMap<String, Object>();
final Enumeration<String> names = (Enumeration<String>) session.getAttributeNames(); // SuppressWarnings!
for (;names.hasMoreElements();) {
    final String key = names.nextElement();
    final Object value = session.getAttribute(key);
    attributes.put(key, value);
}
session.invalidate();
final HttpSession newSession = httpServletRequest.getSession(true);
for (final Entry<String, Object> entry : attributes.entrySet()) {
    newSession.setAttribute(entry.getKey(), entry.getValue());
}
newSession.setAttribute("username", loginForm.username);
newSession.setAttribute("password", loginForm.password);
newSession.setAttribute("path", loginRedirectContextDto.redirectPath);