No result defined for action comp.frank.actions.RegistAct and reult success

actionに名前空間を追加すればいいです。

<?xml version="1.0" encoding="GBK"?>
<!DOCTYPE struts PUBLIC
	"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
	"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
	<constant name="struts.i18n.encoding" value="GBK"/>

	<package name="lee" extends="struts-default" <span style="color:#FF0000;">namespace="/"</span>>
	<!--      Action -->
	<action name="regist" class="com.frank.action.RegistAction">
		<!--       、      ，  input      -->
		<result name="input">/index.jsp</result>
		<result>/WEB-INF/show.jsp</result>
	</action>
		<action name="*">
			<result>/WEB-INF/content/{1}.jsp</result>
		</action>
	</package>
</struts>