ssh 报错 No result defined for action and result input

配置如下：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
	<constant name="struts.i18n.encoding" value="gb2312"></constant>
	<constant name="struts.devMode" value="true" />
	<constant name="struts.objectFactory" value="spring"></constant>
	<package name="struts2" extends="struts-default" >
		<action name="register" class="registerAction">
			<result name="success" type="chain">/welcome.jsp</result>
			<result name="input">/register.jsp</result>
		</action>
	</package>
</struts>    

<?xml version="1.0" encoding="UTF-8"?>
<beans
	xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">


	<bean id="dataSource"
		class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName"
			value="com.mysql.jdbc.Driver">
		</property>
		<property name="url" value="jdbc:mysql://localhost:3306/bbs"></property>
		<property name="username" value="root"></property>
		<property name="password" value="jmln2012"></property>
	</bean>
	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource">
			<ref bean="dataSource" />
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">
					org.hibernate.dialect.MySQLDialect
				</prop>
			</props>
		</property>
	</bean>
	<!-- 定义HibernateTemplate -->
	<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
		<property name="sessionFactory">
			<ref bean="sessionFactory"/>		<!--注入SessionFactory实例对象-->
		</property>
	</bean>
	
	<bean id="hibernateTransactionManager"
		class="org.springframework.orm.hibernate3.HibernateTransactionManager">
		<property name="sessionFactory">
			<ref bean="sessionFactory"/>	<!--注入SessionFactory实例对象-->
		</property>
	</bean>
	
	<bean id="userDAOTarger" class="com.ssh.daoimp.UserDAOImp"><!--装配数据访问层-->
		<property name="hibernateTemplate">
			<ref bean="hibernateTemplate"/>	<!--注入HibernateTemplate -->
		</property>
	</bean>
	
	<bean id="userDAO"
		 class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
		<property name="transactionManager">
			<ref bean="hibernateTransactionManager"/><!-- 为事务代理bean注入事务管理器-->
		</property>
		<property name="transactionAttributes"><!-- 设置事务属性 -->
			<props>
			<!-- 所有的方法，采用required的事务策略 -->
			<prop key="*">PROPAGATION_REQUIRED</prop>
			</props>
		</property>
		<property name="target"><!--为事务代理bean设置目标bean -->
			<ref bean="userDAOTarger"/>
		</property>
	</bean>
	<bean id="userService" class="com.ssh.serviceimp.UserServiceImp">
		<property name="userDAO" ref="userDAO"></property><!--注入DAO层-->
	</bean>
	
	<bean id="registerAction" class="com.ssh.action.RegisterAction" scope="prototype">
		<property name="userService" ref="userService"></property><!--注入业务逻辑层-->
	</bean>
	</beans>

配置应该没有错误

查了很长时间，发现改为

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
	<constant name="struts.i18n.encoding" value="gb2312"></constant>
	<constant name="struts.devMode" value="true" />
	<constant name="struts.objectFactory" value="spring"></constant>
	<package name="struts2" extends="struts-default" >
		<action name="registeruser" class="registerAction">
			<result name="success" type="chain">/welcome.jsp</result>
			<result name="input">/register.jsp</result>
		</action>
	</package>
</struts>    

这样就可以了

可是为什么呀，太坑了吧 换个名就行了？