获取URL地址的方法

Asp:

Request.ServerVariables("HTTP_REFERER") 获取上一页URL

 获取当前页地址:

sub procUpdateReportUrl(objConn)
  Dim urlStr
  if Request.ServerVariables("SERVER_PORT") <> "443" then
   urlStr = "http://" 
  else
    urlStr = "https://" 
  end if
  urlStr = urlStr & Request.ServerVariables("SERVER_NAME") & Request.ServerVariables("URL") 
  if Request.ServerVariables("QUERY_STRING")<>"" then
    urlStr = urlStr & "?" & Request.ServerVariables("QUERY_STRING")
  end if
end sub

asp.net:

      HttpContext.Current.Request.Url.PathAndQuery 获取当前页URL

      Page.Request.UrlReferrer.ToString() 获取前一页URL

javascript:

document.referrer  获取上一页的URL
document.URL      获取当前页的URL(注：URL必须大写)