Hands-On Spring Security 5 for Reactive Applications

Step 7—Spring MVC setup

In Spring MVC, the request lands on DispatcherServlet. DispatcherServlet can be declared in web.xml or as a Java configuration if your servlet container is 3.0+. Please create a dummy SpringSecurityConfig.java file. We will be constructing this class when we explain the first authentication mechanism, namely, basic authentication:

public class SpringMvcWebApplicationInitializer       extends AbstractAnnotationConfigDispatcherServletInitializer {   @Override   protected Class<?>[] getRootConfigClasses() {       return new Class[] { ApplicationConfig.class, SpringSecurityConfig.class };   }   @Override   protected Class<?>[] getServletConfigClasses() {       return new Class[] { WebApplicationConfig.class };   }   @Override protected String[] getServletMappings() ...