类似这样的
http://jxmf.test.com 实际地址 http://www.test.com/sub/index.aspx
http://jxmf.test.com/news/ 实际地址 http://www.test.com/sub/news/index.aspx
http://jxmf.test.com/news/100.html 实际地址 http://www.test.com/news/details.aspx?nid=100
