java.lang.IllegalStateException: No WebApplicationContext found: no ContextLoaderListener or DispatcherServlet registered?org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:252)

解决

web.xml缺少了Spring监听器：

<listener>  
  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  
</listener>  
<context-param>  
  <param-name>contextConfigLocation</param-name>  
  <param-value>classpath:beans.xml</param-value>  
</context-param>