感谢：http://hi.baidu.com/shlice/blog
页面报org.apache.struts.action.InvalidCancelException错误。上网查了一下，说是由于用了validate="true"，而导致的异常。解决方案是在struts-config.xml文件中对应action下面添加一个属性cancellable="true"
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Any existing applications that use the Cancel processing will need to modify their struts-config.xml to set the cancellable property for actions which require it.
In Struts 1.2.9 the <set-property> is used to set the cancellable property for an action....
<action path="/fooAction" input="/foo.jsp" validate="true"> <set-property property="cancellable" value="true"/> <forward name="success" path="/bar.jsp"/> </action>From Struts 1.3.x a new cancellable attribute can be used....
<action path="/fooAction" input="/foo.jsp" validate="true" cancellable="true"> <forward name="success" path="/bar.jsp"/> </action>In both Struts 1.2.9 and Struts 1.3.x an exception handler can be configured to handle the InvalidCancelException
<action path="/fooAction" input="/foo.jsp" validate="true" cancellable="true"> <forward name="success" path="/bar.jsp"/> <exception key="errors.cancel" type="org.apache.struts.action.InvalidCancelException" path="/foo.jsp"/> </action>
