Solucionado
Dá o seguinte erro:
Informações: WebModule[null] ServletContext.log():Spring WebApplicationInitializers detected on classpath: [br.com.alura.casadocodigo.conf.ServletSpringMVC@d66baf5] Grave: Error invoking ServletContainerInitializer org.springframework.web.SpringServletContainerInitializer java.lang.UnsupportedOperationException: Not supported yet. at br.com.alura.casadocodigo.conf.ServletSpringMVC.getRootConfigClasses(ServletSpringMVC.java:18)
Mudei o extends para SpringServletContainerInitializer e funcionou
Antes:
public class ServletSpringMVC extends AbstractAnnotationConfigDispatcherServletInitializer
Depois:
public class ServletSpringMVC extends SpringServletContainerInitializer
A minha resposta de cima na verdade não funcionou estava dando erro porque em:
@Override protected Class<?>[] getRootConfigClasses() { throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates. }
Mudei para
@Override protected Class<?>[] getRootConfigClasses() { return null; }
Agora funcionou.