java - Spring Security SwitchUserFilter exitUserUrl は無視されましたか?

Question

春のセキュリティに問題がありSwitchUserFilterます。ADMIN ロールでログインすると、ユーザーを切り替えて元に戻すことができます。問題は、ユーザーを 2 回目に切り替えると、元に戻せないように見えることです。ブラウザで /secured/switch/back に直接アクセスすると、これがログに表示されます。

[FilterChainProxy] : /secured/admin at position 1 of 10 in additional filter chain; firing Filter: 'SecurityContextPersistenceFilter'
...
[AbstractSecurityInterceptor] : Secure object: FilterInvocation: URL: /secured/admin; Attributes: [hasRole('ADMIN')]
[AbstractSecurityInterceptor] : Previously Authenticated: org.springframework.security.authentication.UsernamePasswordAuthenticationToken@99f3cebe: Principal: harry [OTHER]; Credentials: [PROTECTED]; Authenticated: true; Details: org.springframework.security.web.authentication.WebAuthenticationDetails@2cd90: RemoteIpAddress: 0:0:0:0:0:0:0:1; SessionId: 756CEC9064C2B1B4D788624786F26137; Granted Authorities: OTHER, Switch User Authority [ROLE_PREVIOUS_ADMINISTRATOR,org.springframework.security.authentication.UsernamePasswordAuthenticationToken@6b846d6c: Principal: max [ADMIN]; Credentials: [PROTECTED]; Authenticated: true; Details: org.springframework.security.web.authentication.WebAuthenticationDetails@fffe9938: RemoteIpAddress: 0:0:0:0:0:0:0:1; SessionId: 26B09EEF635C1758BE96B86AB6354434; Granted Authorities: ADMIN]
[AffirmativeBased] : Voter: org.springframework.security.web.access.expression.WebExpressionVoter@3e35ec54, returned: -1
[ExceptionTranslationFilter] : Access is denied (user is not anonymous); delegating to AccessDeniedHandler

通常、ユーザーが構成され/secured/switch/backた URLを使用して元に戻すと、 は URL /secured/switch/backFilterChainProxyのリクエストのフィルタリングを開始します。ただし、2 回目は URL が/secured/adminに変更され、許可が拒否されます。

誰かがここで何が起こっているのか手がかりを持っていますか?

次の構成があります。

<beans:bean id="switchUserProcessingFilter" 
    class="org.springframework.security.web.authentication.switchuser.SwitchUserFilter">

    <beans:property name="userDetailsService" ref="org.example.CustomUserDetailsService"/>
    <beans:property name="switchUserUrl" value="/secured/admin/switch/user" />
    <beans:property name="exitUserUrl" value="/secured/switch/back" />
    <beans:property name="usernameParameter" value="username" />
    <beans:property name="successHandler" ref="RedirectingAuthenticationSuccessHandler" />
</beans:bean>

<beans:bean id="authenticationSuccessHandler" class="org.example.RedirectingAuthenticationSuccessHandler" />

<http use-expressions="true" access-denied-page="/secured/access/denied" >
    <custom-filter ref="switchUserProcessingFilter" position="SWITCH_USER_FILTER" />

    <intercept-url pattern="/secured/login" access="permitAll()" />
    <intercept-url pattern="/secured/login/auth" access="permitAll()" />
    <intercept-url pattern="/secured/switch/back" access="hasAnyRole('ADMIN', 'OTHER')" />
    <intercept-url pattern="/secured/admin/**" access="hasRole('ADMIN')" />
    <intercept-url pattern="/secured/other/**" access="hasRole('OTHER')" />

    <form-login
            login-page='/secured/login'
            login-processing-url="/secured/login/auth"
            authentication-success-handler-ref="authenticationSuccessHandler"
            username-parameter="username"
            password-parameter="password"
            />

    <logout logout-url="/secured/logout" logout-success-url="/secured/login" />

および成功ハンドラー

public class RedirectingAuthenticationSuccessHandler implements AuthenticationSuccessHandler {

    private static final Logger logger = LoggerFactory.getLogger(RedirectingAuthenticationSuccessHandler.class);

    private static final RoleBasedRedirectStrategy redirectHandler = new RoleBasedRedirectStrategy();

    /*
     *  Redirect request based on user role.
     *
     *  For example:
     *      Role ADMIN redirects to /secured/admin
     *      Role OTHER redirects to /secured/other
     */
    @Override
    public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws ServletException, IOException {
        User user = (User) authentication.getPrincipal();
        logger.info("Authentication successful for {}", user);
        redirectHandler.handleRedirect(request, response, user);
    }
}