namespace / and action name Useraction

![![图片说明](https://img-ask.csdn.net/upload/201708/20/1503231271_818009.png)图片说明](https://img-ask.csdn.net/upload/201708/20/1503231265_591038.png)图片说明
感觉并没有写错呀，相关jar都引入了，求大神解答一下下

http://blog.csdn.net/liu578182160/article/details/17266879