BAEL-3283 - Refactored the code as per review comments.

spring-mvc-views/src/main/java/com/baeldung/config/WebInitializer.java

@@ -0,0 +1,28 @@
+package com.baeldung.config;
+
+import org.springframework.web.WebApplicationInitializer;
+import org.springframework.web.context.ContextLoaderListener;
+import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
+import org.springframework.web.servlet.DispatcherServlet;
+
+import javax.servlet.ServletException;
+import javax.servlet.ServletRegistration;
+
+public class WebInitializer implements WebApplicationInitializer {
+    @Override
+    public void onStartup(javax.servlet.ServletContext servletContext) throws ServletException {
+        AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
+        context.register(DataSourceConfig.class);
+        context.register(ThemeMVCConfig.class);
+
+
+        servletContext.addListener(new ContextLoaderListener(context));
+        servletContext.setInitParameter("spring.profiles.active", "database");
+
+        ServletRegistration.Dynamic servlet = servletContext.addServlet("dispatcher", new DispatcherServlet(context));
+
+        servlet.setLoadOnStartup(1);
+        servlet.addMapping("/");
+
+    }
+}