dot net获取url已经提供了N多种函数，测试的url地址是http://weste.net/itnews/default.aspx，我们一个一个来测试一下，具体的测试用例和结果如下：

Request.ApplicationPath
结果：/itnews

Request.CurrentExecutionFilePath: 
结果：itnews/default.aspx

Request.FilePath: 
结果：/itnews/default.aspx

Request.Path: 
结果：/itnews/default.aspx

Request.PhysicalApplicationPath: 
结果：d:\wwwroot\itnews\

Request.PhysicalPath: 
结果：d:\wwwroot\itnews\default.aspx

Request.RawUrl: 
结果：/itnews/default.aspx

Request.Url.AbsolutePath: 
结果：/itnews/default.aspx

Request.Url.AbsoluteUri: 
结果：http://weste.net/itnews/default.aspx

Request.Url.Host: 
结果：weste.net

Request.Url.LocalPath: 
结果：/itnews/default.aspx