struts2配置有命名空间的Action: 解决No configuration found for the specified action错误

<!--struts2配置-->

<package name="default" namespace="/login"  extends="struts-default">
<action name="myLogin" class="test.action.LoginAction">
<result name="input">/index.jsp</result>
<result name="success">/welcome.jsp</result>
</action>
</package>

<!--前台-->

<s:form  action="myLogin" method="post" namespace="/login"  >
<s:textfield name="username" label="login.username"></s:textfield>
<s:textfield name="password" label="login.password"></s:textfield>
<s:submit label="login.submit"></s:submit>
</s:form>

不需要添加.action后缀