Spring MVC java config via AbstractAnnotationConfigDispatcherServletInitializer - spring-mvc

Question

Hi I have a strange problem,
I'am following this Tutorial (http://websystique.com/springmvc/spring-4-mvc-and-hibernate4-integration-example-using-annotations/) and at step 5, configurting initializer class there are two ways of doing that:
1 with WebAppInitializer (my code below)
public class SpindleSpringWebAppInitializer implements WebApplicationInitializer {
public void onStartup(ServletContext servletContext) throws ServletException {
AnnotationConfigWebApplicationContext appContext = new AnnotationConfigWebApplicationContext();
appContext.register(AppConfig.class);
appContext.setServletContext(servletContext);
ServletRegistration.Dynamic dispatcher = servletContext.addServlet(
"SpringDispatcher", new DispatcherServlet(appContext));
dispatcher.setLoadOnStartup(1);
dispatcher.addMapping("/");
}
With AppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer (my code here)
public class AppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
#Override
protected Class<?>[] getRootConfigClasses() {
return new Class[] { AppConfig.class };
}
#Override
protected Class<?>[] getServletConfigClasses() {
return null;
}
#Override
protected String[] getServletMappings() {
return new String[] { "/" };
}
}
This is my AppConfig.java
#Configuration
#EnableWebMvc
public class AppConfig extends WebMvcConfigurerAdapter{
#Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/resources/**").addResourceLocations("/resources/").setCachePeriod(31556926);
}
#Bean
public ViewResolver viewResolver() {
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setViewClass(JstlView.class);
viewResolver.setPrefix("/WEB-INF/views/");
viewResolver.setSuffix(".jsp");
return viewResolver;
}
#Bean
public MessageSource messageSource() {
ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
messageSource.setBasename("messages");
return messageSource;
}
}
The Thing is that when I use the first method everything works, but when I use the second one i get 404 (description The requested resource is not available). I have no other errors and I have no idea how to debug this. I wouldn't bother but I'm trying to implement Spring Security to the code and as I understand the secon type of initializer is the preffered type nowdays.
I'm using Maven, STS, Pivotal tc Servert Developer Edition. Thanks for any feedback.

Answer 1

The problem is solved. Target folder still held web.xml and context.xml files. Deleting target folder and reinstalling the app was the right thing to do