1.web.xml中有shiro框架

<filter>
   <!-- 這裡的 filter-name 要和 spring 的 applicationContext-shiro.xml
   裡的 org.apache.shiro.spring.web.ShiroFilterFactoryBean的 bean name 相同 -->
<filter-name>shiroSecurityFilter</filter-name>
   <filter-class>org.springframework.web.filter.DelegatingFilterProxy</
 
filter-class>
   <init-param>
      <param-name>targetFilterLifecycle</param-name>
      <param-value>true</param-value>
   </init-param>
</filter>
<filter-mapping>
   <filter-name>shiroSecurityFilter</filter-name>
   <url-pattern>/*</
 
url-pattern>
//加上後面的 dispatcher就可以在web.xml中攔截ssm return後找不到檢視和500的異常
 <dispatcher>REQUEST</dispatcher>
   <dispatcher>FORWARD</dispatcher>
   <dispatcher>INCLUDE</dispatcher>
   <dispatcher>ERROR</dispatcher>
</filter-mapping>

//異常用error-page

<error-page
 
>
   <error-code>404</error-code>
   <location>/WEB-INF/itax/404.jsp</location>
</error-page>

<error-page>
   <error-code>500</error-code>
   <location>/WEB-INF/itax/404.jsp</location>
</error-page>
<error-page>
   <error-code>403</error-code>
   <location>/WEB-INF/itax/404.jsp</location>
</error-page>