<!--推荐使用此种方式-->

       <listener>

		<listener-class>

			org.springframework.web.context.ContextLoaderListener

		</listener-class>

	</listener>

	<!--contextConfigLocation在 ContextLoaderListener类中的默认值是 /WEB-INF/applicationContext.xml-->

	<context-param>

		<param-name>contextConfigLocation</param-name>

		<param-value>/WEB-INF/applicationContext.xml</param-value>

		<!-- <param-value>classpath:applicationContext*.xml</param-value> -->

	</context-param>