问Spring Security:检查用户是否具有分层角色的方法

EN

    @Bean
    public RoleHierarchy roleHierarchy(){
        RoleHierarchyImpl roleHierarchy = new RoleHierarchyImpl();
        roleHierarchy.setHierarchy("ROLE_SUPERADMIN > ROLE_ADMIN ROLE_ADMIN > ROLE_USER ROLE_USER > ROLE_GUEST");
        return roleHierarchy;
    }

    @Bean
    public RoleHierarchyVoter roleVoter() {     
        return new RoleHierarchyVoter(roleHierarchy());
    }

    @Bean 
    public DefaultWebSecurityExpressionHandler expressionHandler(){
        DefaultWebSecurityExpressionHandler expressionHandler = new DefaultWebSecurityExpressionHandler();
        expressionHandler.setRoleHierarchy(roleHierarchy());
        return expressionHandler;
    }

public static boolean hasHierarchyRole(String role, RoleHierarchy roleHierarchy) {

        Collection<? extends GrantedAuthority> authorities = SecurityContextHolder.getContext().getAuthentication().getAuthorities();

        Collection<? extends GrantedAuthority> hierarchyAuthorities = roleHierarchy.getReachableGrantedAuthorities(authorities);

        for (GrantedAuthority authority : hierarchyAuthorities) {
            if (authority.getAuthority().equals(role)) {
                return true;
            }
        }

        return false;
    }