经典的ASP重定向应该去哪里？
[英]Where should a classic ASP redirect go?
问题描述
Should the code below go in the <head> ? 
下面的代码应该放在<head>吗？ Or should there be nothing else in the page besides the code below? 还是页面上除了下面的代码之外没有其他内容？
<%
Response.Redirect "http://www.sitename.com/?" & Request.QueryString
%>
2 个解决方案
解决方案1
3 2015-11-18 15:38:53
As long as you have response buffering enabled and you haven't called Response.Flush , you can perform a Response.Redirect anywhere in the page. 只要启用了响应缓冲并且没有调用Response.Flush ，就可以在页面中的任何位置执行Response.Redirect 。 Buffering causes all ASP code to be executed before any of the page is sent to the browser. 缓冲导致所有ASP代码在将任何页面发送到浏览器之前执行。 Thus if you perform a redirect within the code after <head> , none of the HTML will be sent to the browser and thus the redirect header will be sent correctly. 因此，如果您在<head>之后的代码内执行重定向，则不会将任何HTML发送到浏览器，因此重定向头将被正确发送。
Buffering is typically enabled by default in IIS these days. 这些天通常默认情况下在IIS中启用缓冲。 To be safe, you could include this line near the top of your ASP page: 为了安全起见，您可以在ASP页面顶部附近添加以下行：
Response.Buffer = True
解决方案2
1 2015-11-24 19:55:50
Classic ASP is server side code, <head> along with all html is client side code. 经典ASP是服务器端代码， <head>以及所有html是客户端代码。 If you have this line in a .asp page then there's no point in having anything else on the page as users will never get a chance to see it. 如果您在.asp页中有此行，则该页上没有其他内容是没有意义的，因为用户将永远没有机会看到它。
That line would make more sense if it was inside a conditional statement - eg 如果该行位于条件语句中，则更有意义-例如
<%
If Request.QueryString("id") <> "" then
Response.Redirect "http://www.sitename.com/?" & Request.QueryString("id")
End If
%>
Here the user would only be bounced to another page if a value for id was provided in the url, otherwise any client side code in the page would be sent to the browser 在此，只有在url中提供了id值的情况下，用户才会跳到另一个页面，否则该页面中的所有客户端代码都将发送到浏览器
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