Question

I’m using Spring MVC via a @Configuration class:

@Configuration
@EnableWebMvc
public class WebConfiguration extends WebMvcConfigurerAdapter {
    // more stuff
}

In my web.xml I create the ApplicationContext:

<context-param>
    <param-name>contextClass</param-name>
    <param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
</context-param>

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>my.package.WebConfiguration</param-value>
</context-param>

I also create a DispatcherServlet, as follows:

<servlet>
    <servlet-name>mywebapp</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>mywebapp</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

In order to get the dispatcherServlet to work I need a mywebapp-servlet.xml Right now, it’s empty. Do I actually need the mywebapp-servlet.xml file?

Answer 1

You don’t need any XML file. But you must tell the Dispatcher to not look for the default file:

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<context-param>
    <param-name>contextClass</param-name>
    <param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
</context-param>

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>my.pack.WebConfiguration</param-value>
</context-param>

<servlet>
    <servlet-name>mywebapp</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value></param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>mywebapp</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

Just for your information: in fact, in Servlet 3 web.xml is no longer required, too.