Убрать web.xml, applicationContext.xml и сделать все в одном классе

Как убрать web.xml, applicationContext.xml и сделать все в одном классе? Начал делать(класс WebInit), но ничего не вышло

WebInit(Не работает)

public class WebInit implements WebApplicationInitializer {
    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
        AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
        ctx.register(SpringConfiguration.class);
        ctx.setServletContext(servletContext);
    }
}

web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         version="2.5"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <servlet>
        <servlet-name>MainController</servlet-name>
        <servlet-class>org.springframework.web.context.support.HttpRequestHandlerServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>MainController</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <error-page>
        <exception-type>java.lang.Throwable</exception-type>
        <location>/WEB-INF/views/exception/generalException.jsp</location>
    </error-page>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
</web-app>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd">
    <context:annotation-config/>
    <context:component-scan base-package="ua.company"/>
    <context:component-scan base-package="net.sf.oval.integration.spring"/>
</beans>

SpringConfiguration

@Configuration
@EnableTransactionManagement
@ComponentScan({"ua.company", "net.sf.oval.integration.spring"})
@PropertySource("classpath:jdbc.properties")
public class SpringConfiguration {

    private Environment environment;

    @Autowired
    public SpringConfiguration(Environment environment) {
        this.environment = environment;
    }

    @Bean
    public LocalSessionFactoryBean sessionFactory() {
        LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
        sessionFactory.setDataSource(dataSource());
        sessionFactory.setPackagesToScan("ua.company.models");
        sessionFactory.setHibernateProperties(hibernateProperties());
        return sessionFactory;
    }

    @Bean
    public HibernateTransactionManager hibernateTransactionManager() {
        return new HibernateTransactionManager(sessionFactory().getObject());
    }

    @Bean
    public DriverManagerDataSource dataSource() {
        DriverManagerDataSource driverManagerDataSource = new DriverManagerDataSource();
        driverManagerDataSource.setDriverClassName(environment.getProperty("driver.class.name"));
        driverManagerDataSource.setUrl(environment.getProperty("db.url"));
        driverManagerDataSource.setUsername(environment.getProperty("db.username"));
        driverManagerDataSource.setPassword(environment.getProperty("db.password"));
        return driverManagerDataSource;
    }

    @Bean
    public Validator validator() {
        AnnotationsConfigurer annotationsConfigurer = new AnnotationsConfigurer();
        annotationsConfigurer.addCheckInitializationListener(SpringCheckInitializationListener.INSTANCE);
        return new Validator(annotationsConfigurer);
    }

    private Properties hibernateProperties() {
        org.hibernate.cfg.Configuration config = new org.hibernate.cfg.Configuration().addResource("classpath:hibernate.cfg.xml").configure();
        return config.getProperties();
    }
}