How do I get the Session Object in Spring

Question

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

User · Answer

In my scenario  I ve injected the HttpSession into the CustomAuthenticationProvider class like this  public class CustomAuthenticationProvider extends  AbstractUserDetailsAuthenticationProvider        Autowired      private HttpSession httpSession        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         httpSession setAttribute  userObject   myUserObject

User · Answer

Indeed you can access the information from the session even when the session is being destroyed on an HttpSessionLisener by doing    public void sessionDestroyed HttpSessionEvent hse        SecurityContextImpl sci    SecurityContextImpl  hse getSession   getAttribute  SPRING SECURITY CONTEXT           be sure to check is not null since for users who just get into the home page but never get authenticated it will be     if  sci    null            UserDetails cud    UserDetails  sci getAuthentication   getPrincipal               do whatever you need here with the UserDetails            or you could also access the information anywhere you have the HttpSession object available like   SecurityContextImpl sci    SecurityContextImpl  session   getAttribute  SPRING SECURITY CONTEXT      the last assuming you have something like   HttpSession sesssion           can come from request getSession false

User · Answer

I try with next code and work excellent       import org springframework security core Authentication      import org springframework security core context SecurityContextHolder      import org springframework stereotype Controller      import org springframework ui ModelMap      import org springframework web bind annotation RequestMapping      import org springframework web bind annotation RequestMethod                  Created by jaime on 14 01 15                Controller     public class obteinUserSession            RequestMapping value     loginds   method   RequestMethod GET          public String UserSession ModelMap modelMap                Authentication auth   SecurityContextHolder getContext   getAuthentication                String name   auth getName                modelMap addAttribute  username   name               return  hellos     name

User · Answer

ServletRequestAttributes attr    ServletRequestAttributes  RequestContextHolder currentRequestAttributes    attr getSessionId

User · Answer

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

User · Answer

If all that you need is details of User  for Spring Version 4 x you can use  AuthenticationPrincipal and  EnableWebSecurity tag provided by Spring as shown below   Security Configuration Class    Configuration  EnableWebSecurity public class SecurityConfig extends WebSecurityConfigurerAdapter              Controller method    RequestMapping   messages inbox   public ModelAndView findMessagesForUser  AuthenticationPrincipal User user

User · Answer

Since you re using Spring  stick with Spring  don t hack it yourself like the other post posits    The Spring manual says      You shouldn t interact directly with the HttpSession for security   purposes  There is simply no justification for doing so - always use   the SecurityContextHolder instead    The suggested best practice for accessing the session is   Object principal   SecurityContextHolder getContext   getAuthentication   getPrincipal     if  principal instanceof UserDetails      String username     UserDetails principal  getUsername      else     String username   principal toString        The key here is that Spring and Spring Security do all sorts of great stuff for you like Session Fixation Prevention  These things assume that you re using the Spring framework as it was designed to be used  So  in your servlet  make it context aware and access the session like the above example   If you just need to stash some data in the session scope  try creating some session scoped bean like this example and let autowire do its magic

User · Answer

i made my own utils  it is handy      package samples utils   import java util Arrays  import java util Collection  import java util Locale   import javax servlet ServletContext  import javax servlet http HttpServletRequest  import javax servlet http HttpSession  import javax sql DataSource   import org slf4j Logger  import org slf4j LoggerFactory  import org springframework beans factory NoSuchBeanDefinitionException  import org springframework beans factory NoUniqueBeanDefinitionException  import org springframework context ApplicationContext  import org springframework context ApplicationEventPublisher  import org springframework context MessageSource  import org springframework core convert ConversionService  import org springframework core io ResourceLoader  import org springframework core io support ResourcePatternResolver  import org springframework ui context Theme  import org springframework util ClassUtils  import org springframework web context request RequestContextHolder  import org springframework web context request ServletRequestAttributes  import org springframework web context support WebApplicationContextUtils  import org springframework web servlet LocaleResolver  import org springframework web servlet ThemeResolver  import org springframework web servlet support RequestContextUtils           SpringMVC             author    yingzhor gmail com         public final class WebContextHolder        private static final Logger LOGGER   LoggerFactory getLogger WebContextHolder class        private static WebContextHolder INSTANCE   new WebContextHolder         public WebContextHolder get             return INSTANCE             private WebContextHolder             super                  --------------------------------------------------------------------------------------------------------------      public HttpServletRequest getRequest             ServletRequestAttributes attributes    ServletRequestAttributes  RequestContextHolder currentRequestAttributes            return attributes getRequest               public HttpSession getSession             return getSession true              public HttpSession getSession boolean create            return getRequest   getSession create              public String getSessionId             return getSession   getId               public ServletContext getServletContext             return getSession   getServletContext          servlet2 3            public Locale getLocale             return RequestContextUtils getLocale getRequest                public Theme getTheme             return RequestContextUtils getTheme getRequest                public ApplicationContext getApplicationContext             return WebApplicationContextUtils getWebApplicationContext getServletContext                public ApplicationEventPublisher getApplicationEventPublisher             return  ApplicationEventPublisher  getApplicationContext               public LocaleResolver getLocaleResolver             return RequestContextUtils getLocaleResolver getRequest                public ThemeResolver getThemeResolver             return RequestContextUtils getThemeResolver getRequest                public ResourceLoader getResourceLoader             return  ResourceLoader  getApplicationContext               public ResourcePatternResolver getResourcePatternResolver             return  ResourcePatternResolver  getApplicationContext               public MessageSource getMessageSource             return  MessageSource  getApplicationContext               public ConversionService getConversionService             return getBeanFromApplicationContext ConversionService class              public DataSource getDataSource             return getBeanFromApplicationContext DataSource class              public Collection lt String gt  getActiveProfiles             return Arrays asList getApplicationContext   getEnvironment   getActiveProfiles                public ClassLoader getBeanClassLoader             return ClassUtils getDefaultClassLoader               private  lt T gt  T getBeanFromApplicationContext Class lt T gt  requiredType            try               return getApplicationContext   getBean requiredType             catch  NoUniqueBeanDefinitionException e                LOGGER error e getMessage    e               throw e            catch  NoSuchBeanDefinitionException e                LOGGER warn e getMessage                 return null

[spring] How do I get the Session Object in Spring?

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