web.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
		xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

	<display-name>Spring PetClinic</display-name>

	<description>Spring PetClinic sample application</description>

	<!--
		Key of the system property that should specify the root directory of this
		web app. Applied by WebAppRootListener or Log4jConfigListener.
	-->
	<context-param>
		<param-name>webAppRootKey</param-name>
		<param-value>petclinic.root</param-value>
	</context-param>
	
	 <context-param> 
	    <param-name>spring.profiles.active</param-name>
	    <param-value>jpa</param-value>
	    <!-- you can replace the above param with:
	    	<param-value>jdbc</param-value>
	    	<param-value>jpa</param-value> (in the case of plain JPA)
	    	<param-value>spring-data-jpa</param-value> (in the case of Spring Data JPA)
	     -->
	  </context-param>

	<!--
		Location of the Log4J config file, for initialization and refresh checks.
		Applied by Log4jConfigListener.
	-->
	<context-param>
		<param-name>log4jConfigLocation</param-name>
		<param-value>/WEB-INF/classes/log4j.xml</param-value>
	</context-param>

	<!--
		- Location of the XML file that defines the root application context.
		- Applied by ContextLoaderServlet.
	-->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring/applicationContext-dao.xml</param-value>
		<!--
			To use the JPA variant above, you will need to enable Spring load-time
			weaving in your server environment. Out of the box, Spring will try to
			detect the running environment and use the appropriate weaver but if that
			fails, one must enable one by hand or use the VM-wide weaver.
			See PetClinic's readme and/or Spring's JPA documentation for more information.
		-->
	</context-param>
	
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>	

	<!--
		- Configures Log4J for this web app.
		- As this context specifies a context-param "log4jConfigLocation", its file path
		- is used to load the Log4J configuration, including periodic refresh checks.
		-
		- Would fall back to default Log4J initialization (non-refreshing) if no special
		- context-params are given.
		-
		- Exports a "web app root key", i.e. a system property that specifies the root
		- directory of this web app, for usage in log file paths.
		- This web app specifies "petclinic.root" (see log4j.properties file).
	-->
	<!-- Leave the listener commented-out if using JBoss -->
	<!--
	<listener>
		<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
	</listener>
	-->
	
	<!--
		- Servlet that dispatches request to registered handlers (Controller implementations).
		- Has its own application context, by default defined in "{servlet-name}-servlet.xml",
		- i.e. "petclinic-servlet.xml".
		-
		- A web app can contain any number of such servlets.
		- Note that this web app has a shared root application context, serving as parent
		- of all DispatcherServlet contexts.
	-->
	<servlet>
		<servlet-name>petclinic</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<load-on-startup>1</load-on-startup>
	</servlet>

	<!--
		- Maps the petclinic dispatcher to "*.do". All handler mappings in
		- petclinic-servlet.xml will by default be applied to this subpath.
		- If a mapping isn't a /* subpath, the handler mappings are considered
		- relative to the web app root.
		-
		- NOTE: A single dispatcher can be mapped to multiple paths, like any servlet.
	-->
	<servlet-mapping>
		<servlet-name>petclinic</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

	<filter>
		<filter-name>httpMethodFilter</filter-name>
		<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
	</filter>

	<filter-mapping>
		<filter-name>httpMethodFilter</filter-name>
		<servlet-name>petclinic</servlet-name>
	</filter-mapping>

	<session-config>
		<session-timeout>10</session-timeout>
	</session-config>
	
</web-app>