java.lang.ClassNotFoundException: org.springframework.web.content.ContextLoaderListener

1、错误描写叙述

严重: Error configuring application listener of class org.springframework.web.content.ContextLoaderListener
java.lang.ClassNotFoundException: org.springframework.web.content.ContextLoaderListener
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1305)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1157)
	at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:520)
	at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:501)
	at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:120)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4650)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5166)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)

八月 13, 2015 7:53:50 下午 org.apache.catalina.core.StandardContext listenerStart
严重: Skipped installing application listeners due to previous error(s)
八月 13, 2015 7:53:50 下午 org.apache.catalina.core.StandardContext startInternal
严重: Error listenerStart
八月 13, 2015 7:53:50 下午 org.apache.catalina.core.StandardContext startInternal
严重: Context [/SendMail] startup failed due to previous errors

2、错误原因

     我在web.xml中加入了一个监听器

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

     而且导入了spring-web-4.1.1.RELEASE.jar，用反编译工具查看了这个jar，的确存在org.springframework.web.context.ContextLoaderListener，可是执行项目，还是报错

3、解决的方法