登录后重定向（GAE上的Spring安全性）

Question

I am having some troubles making my login redirect to the same place always. I have done something like this

<http auto-config="true" use-expressions="true" entry-point-ref="gaeEntryPoint" >
    <intercept-url pattern="/_ah/login" access="permitAll"/>
    <intercept-url pattern="/**" access="isAuthenticated()"/>
    <custom-filter position="PRE_AUTH_FILTER" ref="gaeFilter"/>
    <form-login authentication-success-handler-ref="authSuccessHandler"/>
</http>

<beans:bean id="authSuccessHandler"
            class="dk.lindhardt.arbejdsfordeling.server.security.AuthenticationSuccessHandlerImpl"/>

And

public class AuthenticationSuccessHandlerImpl implements AuthenticationSuccessHandler {

   public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) 
   throws IOException, ServletException {
       if (authentication != null && authentication.isAuthenticated()) {
           response.sendRedirect(OrganizationListServlet.URL);
       }
   }

 }

It never gets into this method above. How do I make it do that?

Edit: I was following this guide http://blog.springsource.com/2010/08/02/spring-security-in-google-app-engine/

Answer 1

You shouldn't need to have that servlet there that then does the redirect. You can have the redirect in the config itself.

<http auto-config="true">   
    <intercept-url pattern="/app/login" filters="none" />
    <form-login 
        login-page="/app/login" 
        login-processing-url="/app/dologin" 
        authentication-failure-url="/app/login?login_error=1" 
        default-target-url="/app/home"/>
</http>

Answer 2

I think we can extend SimpleUrlAuthenticationSuccessHandler and call super.onAuthenticationSuccess() method to use DefaultRedirectStrategy . The modified code will be:

public class AuthenticationSuccessHandlerImpl extends SimpleUrlAuthenticationSuccessHandler {
       @Override
   public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) 
   throws IOException, ServletException {
       if (authentication != null) {
       setDefaultTargetUrl(OrganizationListServlet.URL);
              super.onAuthenticationSuccess(request, response, authentication);
       }

   }

 }

Answer 3

You could do it without the Handler by adding the "always-use-default-target" to your form-login settings

<form-login default-target-url='/your/target/url.htm' always-use-default-target='true' />

See http://static.springsource.org/spring-security/site/docs/3.1.x/reference/springsecurity-single.html#ns-form-and-basic under "Setting a Default Post-Login Destination"

Answer 4

It is not pretty but I solved it by positioning a custom filter at position LAST.

public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws
            IOException, ServletException {
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();

       if (authentication != null && authentication.isAuthenticated()) {
            User user = (User) authentication.getPrincipal();
            if (user.isLoggingIn()) {
                if (authentication.getAuthorities().contains(AppRole.ROLE_NEW_USER)) {
                    ((HttpServletResponse) response).sendRedirect(RegistrationServlet.URL);
                } else {
                    ((HttpServletResponse) response).sendRedirect("/" + OrganizationListServlet.URL);
                }
                user.setLoggingIn(false);
            } else if (user.isLoggingOut()) {
                ((HttpServletRequest) request).getSession().invalidate();
            }
        }
        filterChain.doFilter(request, response);
}

I think the problem is that the gaeFilter bypasses the normal login procedure and therefore I can't use the authentication-success-handler.