Configure the Spring Dispatcher Servlet using all Java Code (no xml)

Here are the steps

1. Delete the files: web.xml file and spring-mvc-demo-servlet.xml files

2. Create a new Java package: com.luv2code.springdemo.config

3. Add the following Java files in your package

File: DemoAppConfig.java

package com.luv2code.springdemo.config;
 
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
 
@Configuration
@EnableWebMvc
@ComponentScan(basePackages="com.luv2code.springdemo")
public class DemoAppConfig {
 
 // define a bean for ViewResolver
 
 @Bean
 public ViewResolver viewResolver() {
  
  InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
  
  viewResolver.setPrefix("/WEB-INF/view/");
  viewResolver.setSuffix(".jsp");
  
  return viewResolver;
 }
 
}

File: MySpringMvcDispatcherServletInitializer.java

package com.luv2code.springdemo.config;
 
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
 
public class MySpringMvcDispatcherServletInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
 
 @Override
 protected Class<?>[] getRootConfigClasses() {
  // TODO Auto-generated method stub
  return null;
 }
 
 @Override
 protected Class<?>[] getServletConfigClasses() {
  return new Class[] { DemoAppConfig.class };
 }
 
 @Override
 protected String[] getServletMappings() {
  return new String[] { "/" };
 }
 
}

4. Test your app

Your app should work as desired.