I am relatively new to Spring and Spring security.
I was attempting to write a program where I needed to authenticate a user at the server end using Spring security,
I came up with the following:
public class CustomAuthenticationProvider extends AbstractUserDetailsAuthenticationProvider{
@Override
protected void additionalAuthenticationChecks(UserDetails userDetails, UsernamePasswordAuthenticationToken usernamePasswordAuthenticationToken)
throws AuthenticationException
{
System.out.println("Method invoked : additionalAuthenticationChecks isAuthenticated ? :"+usernamePasswordAuthenticationToken.isAuthenticated());
}
@Override
protected UserDetails retrieveUser(String username,UsernamePasswordAuthenticationToken authentication) throws AuthenticationException
{
System.out.println("Method invoked : retrieveUser");
//so far so good, i can authenticate user here, and throw exception if not authenticated!!
//THIS IS WHERE I WANT TO ACCESS SESSION OBJECT
}
}
My usecase is that when a user is authenticated, I need to place an attribute like:
session.setAttribute("userObject", myUserObject);
myUserObject is an object of some class that I can access throughout my server code across multiple user requests.
Your friend here is org.springframework.web.context.request.RequestContextHolder
// example usage
public static HttpSession session() {
ServletRequestAttributes attr = (ServletRequestAttributes) RequestContextHolder.currentRequestAttributes();
return attr.getRequest().getSession(true); // true == allow create
}
This will be populated by the standard spring mvc dispatch servlet, but if you are using a different web framework you have add org.springframework.web.filter.RequestContextFilter
as a filter in your web.xml
to manage the holder.
EDIT: just as a side issue what are you actually trying to do, I'm not sure you should need access to the HttpSession
in the retieveUser
method of a UserDetailsService
. Spring security will put the UserDetails object in the session for you any how. It can be retrieved by accessing the SecurityContextHolder
:
public static UserDetails currentUserDetails(){
SecurityContext securityContext = SecurityContextHolder.getContext();
Authentication authentication = securityContext.getAuthentication();
if (authentication != null) {
Object principal = authentication.getPrincipal();
return principal instanceof UserDetails ? (UserDetails) principal : null;
}
return null;
}