Spring Security拒绝访问`@Security`方法，尽管已授予权限

Question

@Secured(SUPERADMIN_ROLE)
@SpringView(name = AdminHomeView.NAME)
class AdminHomeView : DemoViewWithLabel(){
    companion object {
        const val NAME = "admin/home"
    }

    override val labelContent = "This is the protected admin section. You are authenticated and authorized."
}

VerticalLayout(Label(labelContent))

因此，如果我以superadmin角色的身份登录，我就可以很好地访问这个视图。

但是，让我们做一个小的改变，重写一个方法...

@Secured(SUPERADMIN_ROLE)
@SpringView(name = AdminHomeView.NAME)
class AdminHomeView : DemoViewWithLabel(){
    companion object {
        const val NAME = "admin/home"
    }

    override val labelContent = "This is the protected admin section. You are authenticated and authorized."

    override fun enter(event: ViewChangeListener.ViewChangeEvent?) {
        super.enter(event)
    }
}

这会给我一个AccessDeniedException...我不明白为什么。

Secure object: ReflectiveMethodInvocation: public void ch.cypherk.myapp.ui.views.admin.AdminHomeView.enter(com.vaadin.navigator.ViewChangeListener$ViewChangeEvent);
  target is of class [ch.cypherk.myapp.ui.views.admin.AdminHomeView];
  Attributes: [Superadmin]

Previously Authenticated: org.springframework.security.authentication.UsernamePasswordAuthenticationToken@a6801701:
  Principal: ch.cypherk.myapp.model.auth.MyUserDetails@6e4c5c5b;
  Credentials: [PROTECTED];
  Authenticated: true; Details: null;
  Granted Authorities: RIGHT_MANAGER, Superadmin 

Voter: org.springframework.security.access.prepost.PreInvocationAuthorizationAdviceVoter@7ddc2dd1, returned: 0  
Voter: org.springframework.security.access.vote.RoleVoter@75d3fbb7, returned: 0  
Voter: org.springframework.security.access.vote.AuthenticatedVoter@391740fc, returned: 0

org.springframework.security.access.AccessDeniedException: Access is denied
    at org.springframework.security.access.vote.AbstractAccessDecisionManager.checkAllowIfAllAbstainDecisions(AbstractAccessDecisionManager.java:70)
    at org.springframework.security.access.vote.AffirmativeBased.decide(AffirmativeBased.java:89)
    at org.springframework.security.access.intercept.AbstractSecurityInterceptor.beforeInvocation(AbstractSecurityInterceptor.java:233)
    at org.springframework.security.access.intercept.aopalliance.MethodSecurityInterceptor.invoke(MethodSecurityInterceptor.java:65)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)
    at ch.cypherk.myapp.ui.views.admin.AdminHomeView$$EnhancerBySpringCGLIB$$ae16a97c_4.enter(<generated>)
    at com.vaadin.navigator.Navigator.performNavigateTo(Navigator.java:778)
    at com.vaadin.navigator.Navigator.lambda$navigateTo$9a874efd$1(Navigator.java:702)
    at com.vaadin.navigator.ViewBeforeLeaveEvent.navigate(ViewBeforeLeaveEvent.java:54)
    at com.vaadin.navigator.View.beforeLeave(View.java:79)
    at com.vaadin.navigator.Navigator.runAfterLeaveConfirmation(Navigator.java:730)
    at com.vaadin.navigator.Navigator.navigateTo(Navigator.java:701)
  at ...

为什么？！！

希望能得到一些帮助来解决这个问题。

Answer 1

简而言之

授予的权限不显示role_-prefix，因此将被rolevoter忽略。

用具有空前缀的自定义实现替换rolevoter解决了这个问题。

Vaadin是一个单页框架，Vaadin 8引用视图的方式很糟糕，即在根url上使用#！（例如https:// : /#！foo/bar/baz/... )。

#之后不会向服务器发送任何内容，这意味着我们无法区分对/的访问和对/#！foo/bar/baz/...的访问

因此，我们不能使用Spring Security性来保护对视图的访问。

访问这些观点本身是由瓦丁保护的，而不是Spring。SpringViewProvider将找不到用户不应该访问的视图（因此，用户无法在那里导航）。

但是，只要我们在该视图上调用一个方法，Spring security就会启动并执行访问检查。正是这些检查失败了，因为授予的authorites没有预期的“role_”前缀Spring。（我原以为这只是一个约定，但事实并非如此；rolevoter实际上忽略了不显示前缀的权限，因此必须这样做，或者必须提供自己的rolevoter。）

解决办法相对简单。

@Configuration
@EnableGlobalMethodSecurity(
    securedEnabled = true,
    prePostEnabled = true,
    proxyTargetClass = true
)
class GlobalSecurityConfiguration : GlobalMethodSecurityConfiguration(){
    override fun accessDecisionManager(): AccessDecisionManager {
        return (super.accessDecisionManager() as AffirmativeBased).apply {
            decisionVoters.replaceAll {
                when(it){
                    is RoleVoter -> MyRoleVoter()
                    else -> it
                }
            }
        }
    }
}

class MyRoleVoter : RoleVoter(){
    init {
        rolePrefix = ""
    }
}