Multiple Spring servlets?

[peeper]

Hi,

Is it possible to specify multiple Spring servlets in a web.xml? If it is possible, then what values should the <context-param/> and <servlet/> elements take and how do they relate to one another?

When I have a single Spring servlet (DispatcherServlet, acting as front controller), then I use the <context-param/> to load extra config files. So, my <context-param/> and <servlet/> elements look something like the following:

	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>
			classpath:dataaccessservices-config.xml
		</param-value>
	</context-param>

	<servlet>
		<servlet-name>frontController</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>
				/WEB-INF/frontcontroller-servlet-config.xml
			</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>

Thanks in advance for suggestions/explanations,

Peeper.

[Marten Deinum]

The context-param element is only for the ContextLoaderListener NOT for you DispatcherServlet. You can have multiple DispatcherServlets. Each DispatcherServlet creates an instance of the ApplicationContext from either the [servlet-name]-servlet.xml or the value specified by the contextConfigLocation.

Each DispatcherServlets ApplicationContext has the context loaded by the ContextLoaderListener as its root/parent applicationcontext.

[peeper]

Thanks for that, Marten.

So, to clarify:

1. ContextLoaderListener will create a root ApplicationContext - actually, a WebApplicationContext?

2. Each Spring servlet will create its own ApplicationContext, which inherits configuration from the root ApplicationContext (which the servlet can override)?

3. Can other types of Spring servlet (extensions of, say, FrameworkServlet) be instantiated within web.xml? - I want to manage a mail service using a vanilla servlet: http://forum.springframework.org/sho...0&postcount=25

Thanks,

Peeper.

[Marten Deinum]

1. Yes
2. Yes
3. Sure why not...