Question

任何人都可以解释我为什么会遇到以下异常：

java.lang.ClassCastException: org.apache.struts2.dispatcher.StrutsRequestWrapper cannot be cast to com.evermind[Oracle Containers
    for J2EE 10g (10.1.3.5.0) ].server.http.EvermindHttpServletRequest
    at com.evermind[Oracle Containers for J2EE 10g (10.1.3.5.0) ].server.http.NotFoundServlet.sendNotFound(NotFoundServlet.java:26
    )
    at com.evermind[Oracle Containers for J2EE 10g (10.1.3.5.0) ].server.http.NotFoundServlet.service(NotFoundServlet.java:18)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
    at com.evermind[Oracle Containers for J2EE 10g (10.1.3.5.0) ].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java
    :64)
    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:88)
    at com.evermind[Oracle Containers for J2EE 10g (10.1.3.5.0) ].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java
    :15)
    at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)

当我想拥有NOT_FOUND页面并且我的请求url结束时，我得到它。[some_ext]就像.htm，.blah。但是当请求没有。[some_ext]（比如_http：/ domain / part1 / part2 / nosuchurl）那么一切正常，我在struts配置中得到了正常的NOT_FOUND页面映射：

<default-action-ref name="nopagefound"/>
<action name="nopagefound">
  <result>/WEB-INF/jsp/errors/notfound.jsp</result>
</action>

我使用Struts2（2.3.1.2）+ Spring部署在oc4j 10.1.3.5.0。

这是我的struts映射：

<filter>
    <filter-name>struts</filter-name>
    <filter-class>
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
    </filter-class>
</filter>
<filter-mapping>
    <filter-name>struts</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

在Struts.properties中

struts.action.extension= ,

Answer 1

<filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>*.action</url-pattern>
</filter-mapping>

如果扩展名为.action，则只传递StrutsPrepareAndExecuteFilter，然后就无法获得此异常。并且为了处理404错误，您可以覆盖默认错误页面。

带有struts2的404 pageNotFound出错

1 个答案: