The Struts dispatcher cannot be found. This is usually caused by using Struts ta

The Struts dispatcher cannot be found. This is usually caused by using Struts tags without the associated filter. 异常

 

 

在jsp页面中引用了:

<font color="blue"><s:property value="#session.existAdminUser.username"/></font>

 

但是session中不存在existAminUser对象,因此,需要在web.xml中对jsp页面添加struts2过滤器:

 <filter>

  <filter-name>struts2</filter-name>

  <filter-class>

  org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter

  </filter-class>

  </filter>

  <filter-mapping>

  <filter-name>struts2</filter-name>

  <url-pattern>*.do</url-pattern>

  <url-pattern>*.jsp</url-pattern>

  </filter-mapping>