struts2 标签使用异常 The Struts dispatcher cannot be found.

struts2标签使用异常TheStrutsdispatchercannotbefound.ThisisusuallycausedbyusingStrutstagswithouttheassociatedfilter.Strutstagsareonlyusablewhentherequesthaspassedthroughitsservletfilter,whichinitializestheStrutsdispatcherneededforthistag.-[unknownlocation]

在JSP使用struts2标签报错。。

总结后是web.xml的配置错误。。

原来的

<!--struts2图片上传-->

<filter>

<filter-name>struts-cleanup</filter-name>

<filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>

</filter>

<filter>

<filter-name>struts2</filter-name>

<filter-class>

org.apache.struts2.dispatcher.FilterDispatcher

</filter-class>

</filter>

<filter-mapping>

<filter-name>struts-cleanup</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<filter-mapping>

<filter-name>struts2</filter-name>

<url-pattern>*.action</url-pattern>

<dispatcher>REQUEST</dispatcher>

<dispatcher>FORWARD</dispatcher>

</filter-mapping>

修改后。。需要为.jsp配置

<!--struts2图片上传-->

<filter>

<filter-name>struts-cleanup</filter-name>

<filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>

</filter>

<filter>

<filter-name>struts2</filter-name>

<filter-class>

org.apache.struts2.dispatcher.FilterDispatcher

</filter-class>

</filter>

<filter-mapping>

<filter-name>struts-cleanup</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<filter-mapping>

<filter-name>struts2</filter-name>

<url-pattern>*.jsp</url-pattern>

<dispatcher>REQUEST</dispatcher>

<dispatcher>FORWARD</dispatcher>

</filter-mapping>

<filter-name>struts2</filter-name>

<url-pattern>*.action</url-pattern>

<dispatcher>REQUEST</dispatcher>

<dispatcher>FORWARD</dispatcher>

</filter-mapping>

重新启动。OK