Adding multiple servlets in single web.xml

Question

I am trying to run two Servlet-class in a single web.xml but its not working, each servlet-class works fine independently.

web.xml:

<servlet>
    <servlet-name>spring-ws</servlet-name>
    <servlet-class>org.springframework.ws.transport.http.MessageDispatcherServlet</servlet-class>
    <init-param>
        <param-name>transformWsdlLocations</param-name>
        <param-value>true</param-value>
    </init-param>
    <load-on-startup>2</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>spring-ws</servlet-name>
    <url-pattern>/*</url-pattern>
</servlet-mapping>

<session-config>
    <session-timeout>240</session-timeout>
</session-config>

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/spring-ws-servlet.xml
     /WEB-INF/health-page-servlet.xml</param-value>
</context-param>

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

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

<servlet-mapping>
    <servlet-name>health-page</servlet-name>
    <url-pattern>/health.htm</url-pattern>
</servlet-mapping>

Do let me know if you can figure something wrong that i am doing.

I tried the below link but it doesnt work for me Can I use Spring MVC and Spring WS in one single application?

Answer 1

This isn't going to work. The one which is mapped on /* overtakes all requests. You need to map it on / instead so that it will only intercept on requests which are not matched by all other existing servlets (including the JSP servlet which is implicitly mapped on *.jsp and all "normal" static resources like CSS/JS/image files!). See also Difference between / and /* in servlet mapping url pattern.

If being able to serve static resources is also required, then better map it on a more specific URL pattern like /ws/* and create a Filter which checks the request URI and then forwards accordingly. That filter can in turn safely be mapped on /*. See also this answer for a more concrete code example: How to access static resources when mapping a global front controller servlet on /*.

Answer 2

I am using Java configuration in my project and following code works fine for the same purpose:

public class Initializer implements WebApplicationInitializer {

    public void onStartup(ServletContext servletContext) throws ServletException {
        AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
        ctx.register(ApplicationConfiguration.class);
        ctx.setServletContext(servletContext);

        MessageDispatcherServlet messageDispatcherServlet = new MessageDispatcherServlet();
        messageDispatcherServlet.setApplicationContext(ctx);
        messageDispatcherServlet.setTransformWsdlLocations(true);
        Dynamic dynamic = servletContext.addServlet("messageDispatcherServlet", messageDispatcherServlet);
        dynamic.addMapping("/ws/*");
        dynamic.setLoadOnStartup(1);

        dynamic = servletContext.addServlet("dispatcher", new DispatcherServlet(ctx));
        dynamic.addMapping("/");
        dynamic.setLoadOnStartup(1);
    }
}