<servlet>   
 <servlet-name>default</servlet-name>   
 <servlet-class>   
  org.apache.catalina.servlets.DefaultServlet   
 </servlet-class>   
 <init-param>   
  <param-name>debug</param-name>   
  <param-value>0</param-value>   
 </init-param>   
 <init-param>   
  <param-name>listings</param-name>   
  <param-value>true</param-value>   
 </init-param>   
 <load-on-startup>1</load-on-startup>   
</servlet>

------解决方案--------------------

Directory Listing  
就是允许目录遍历


------解决方案--------------------
学习了，帮顶~