处理找不到action:
在struts.xml中添加：
<default-action-ref name="pageNotFund"></default-action-ref>
<action name="pageNotFund">
<result>/pages/error.html</result>
</action>
pageNotFund 是自己定义的一个acion
处理找不到jsp:
在web.xml中添加：
<error-page>
<error-code>401</error-code>
<location>/error/404.htm</location>
</error-page>
<error-page>
<error-code>402</error-code>
<location>/error/404.htm</location>
</error-page>
<error-page>
<error-code>403</error-code>
<location>/error/404.htm</location>
</error-page>
<error-page>
<error-code>404</error-code>
<location>/error/404.htm</location>
</error-page>
<error-page>
<error-code>500</error-code>
<location>/error/500.htm</location>
</error-page>
<error-page>
<exception-type>java.lang.NullPointerException</exception-type>
<location>/error/npe.htm</location>
</error-page>
404.htm等是自己定义的出错显示页面