Spring servlet mapping is not working after successful login

Question

I have controller which handles request to / and returns corresponding jsp. After switching to annotation based configuration and adding Spring security I got HTTP 404 when log in is successful. It seems to me like all config is in place. What's wrong?

AppConfig

@EnableWebMvc
@Configuration
@ComponentScan({"app.controller.*"})
@Import({SecurityConfig.class})
@PreAuthorize("hasRole('ROLE_ADMIN')")
public class AppConfig {

    @Bean
    public InternalResourceViewResolver viewResolver(){
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setViewClass(JstlView.class);
        viewResolver.setPrefix("/WEB-INF/pages");
        viewResolver.setSuffix(".jsp");
        return viewResolver;
    }
    public void addResourceHandlers(ResourceHandlerRegistry registry){
        registry.addResourceHandler("/resources/**").addResourceLocations("classpath:/resources/");
    }

SecurityConfig

@Configuration
@EnableWebMvcSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {


    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception{
        auth.inMemoryAuthentication().withUser("admin").password("admin").roles("ADMIN");
    }
    @Override
    protected void configure(HttpSecurity http) throws Exception{
        http.authorizeRequests()
                    .antMatchers("/**").access("hasRole('ROLE_ADMIN')")
                .and().formLogin();
    }
}

SpringMvcInitializer

public class SpringMvcInitializer extends
        AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[]{AppConfig.class};
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return null;
    }

    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }
}

Controller

@Controller
@RequestMapping("/")
public class AppController {

 @RequestMapping(value = "/", method= RequestMethod.GET)
    public String getRequestPage(Model model){ .....}
}

UPDATE

changing in SpringMvcInitializer to following code didn't help:

@Override
        protected String[] getServletMappings() {
            return new String[]{"/*"};
        }

UPDATE2:

for some reason IntelliJ shows that it cannot autowire bean AuthenticationManager in SecurityConfig class

UPDATE3

I removed any Deployment descriptors in Facets (it still suggests to create web.xml but I think I don't need it since I configure Spring only by code). Right?

Answer 1

I can see that in your SpringMvcInitializer you set dispatcher servlet mapping to /. AFAIK, you cannot map a controller to / with this mapping. Disclaimer : I really do not know why but I gave more details on that in this other post.

IMHO, you should map the servlet to /* if there are not side effects, because I do not know any way to declare a welcome-file-list except with a web.xml. But you can always try to let only the <welcome-file-list> in the web.xml file, all remaining configuration being migrated to annotations and java config. A 3.0+ servlet container should correctly process both.

Edit :

Looked further in your configuration and I found unusual pieces of config :

• AppConfig seems to configure servlet part (scans controller package and declares resource handling) but it is declared as root application context. IMHO it would be better declared as a dispatcher servlet application context.
• I never used not saw a PreAuthorize annotation in a configuration file - you should try to remove it