Null GrantedAuthority получить UserDetails на Spring Security

Question

Это моя UserDetails служба весны безопасности:

public class UserDetail implements UserDetailsService { 

    @Autowired 
    User_service user_service; 

    @Override 
    public UserDetails loadUserByUsername(String userId) throws UsernameNotFoundException { 
     boolean enabled = true; 
     boolean accountNonExpired = true; 
     boolean credentialsNonExpired = true; 
     boolean accountNonLocked = true; 
     com.domain.User user = user_service.findByUserName(userId); 
     return new User(user.getUserId(), user.getPassword(), enabled, 
          accountNonExpired, credentialsNonExpired, 
          accountNonLocked, this.getGrantedAuthorities(user)); 
    } 

    public List<GrantedAuthority> getGrantedAuthorities(com.domain.User user) { 
     List<GrantedAuthority> role_name = null; 
     List<Role> roles = user.getRoles(); 
     try { 
      for(Role role : roles) { 
       role_name.add(new GrantedAuthorityImpl(role.getName())); 
      } 
     } catch(Exception ex) { 
      System.out.println(ex.toString()); 
     } 
     return role_name; 
    } 

} 

И я получаю это исключение:

org.springframework.security.authentication.InternalAuthenticationServiceException: Cannot pass a null GrantedAuthority collection 
at org.springframework.security.authentication.dao.DaoAuthenticationProvider.retrieveUser(DaoAuthenticationProvider.java:110) 
at org.springframework.security.authentication.dao.AbstractUserDetailsAuthenticationProvider.authenticate(AbstractUserDetailsAuthenticationProvider.java:132) 
at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:156) 
at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:177) 
at org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter.attemptAuthentication(UsernamePasswordAuthenticationFilter.java:94) 
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:211) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) 
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) 
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) 
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) 
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:316) 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) 
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) 
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) 
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) 
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357) 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260) 
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188) 
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191) 
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168) 
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189) 
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114) 
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) 
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838) 
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113) 
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115) 
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55) 
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135) 
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564) 
at  org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544) 
at java.lang.Thread.run(Thread.java:724) 
Caused by: java.lang.IllegalArgumentException: Cannot pass a null GrantedAuthority collection 
at org.springframework.util.Assert.notNull(Assert.java:112) 
at org.springframework.security.core.userdetails.User.sortAuthorities(User.java:146) 
at org.springframework.security.core.userdetails.User.<init>(User.java:108) 

В getGrantedAuthorities методы найден объект пользователя, я протестируйте его, но когда я хочу добавить имя роли в список GrantedAuthority, он выдает исключение «Не удается передать нулевую коллекцию GrantedAuthority». Почему GrantedAuthority возвращает значение null?

Я уверен, что объект «user» не равен null, я проверил его.

Answer 1

role_name - null. Попробуйте изменить List<GrantedAuthority>role_name=null; на List<GrantedAuthority>role_name=new ArrayList<>();.

Кроме того, user.getRoles() должен возвращать пустую коллекцию.