url重写 正则表达式有关问题

url重写 正则表达式问题
<add   url= "news/(\d+)$ "   mappedUrl= "news/default.aspx?id=$1 "/>
<add   url= "news/(\d+)$ "   mappedUrl= "news/test.aspx?sUserName=$1 "/>
这样写就会出现问题，它都转向news/default.aspx，请问要怎么解决这样的问题？

[解决办法]
楼主想匹配什么样的内容??
[解决办法]
试下

<add url= "news/(\d+) " mappedUrl= "news/default.aspx?id=$1 "/>
<add url= "news/(\d+) " mappedUrl= "news/test.aspx?sUserName=$1 "/>

[解决办法]
写一个类专门处理，绑定到web.config