No WebApplicationContext found: no ContextLoaderListener registered?报错解决

<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">   今天跑了下新搭的一个SSI框架。报如下错误：</span>

<span style="font-size:18px;">严重: Exception sending context initialized event to listener instance of class com.j.chat.upgrade.web.core.SystemLaunchListener
java.lang.IllegalStateException: No WebApplicationContext found: no ContextLoaderListener registered?
	at org.springframework.web.context.support.WebApplicationContextUtils.getRequiredWebApplicationContext(WebApplicationContextUtils.java:84)
	at com.j.chat.upgrade.web.core.SystemLaunchListener.contextInitialized(SystemLaunchListener.java:27)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4779)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5273)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1566)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1556)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)
2014-7-14 19:49:10 org.apache.catalina.core.ApplicationContext log
信息: Initializing Spring root WebApplicationContext</span>

    很纳闷，我在web.xml里面已经声明了ContextLoaderListener 这个监听器。我的web.xml配置文件如下：

	<listener>
		<listener-class>com.j.chat.upgrade.web.core.SystemLaunchListener</listener-class>
	</listener>
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>	
  	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring-config.xml</param-value>
	</context-param>

    网上搜了下web.xml文件里listener的执行顺序。下面是一个可信的说法：

    在java web规范中说明.按照listner,filter,servlet的顺序初始化. 
    其中listener是按照在web.xml中的申明顺序执行的.不存在并发的的情况.

No WebApplicationContext found: no ContextLoaderListener registered?报错解决,,5-wow.com