Response.Redirect的使用〜路径 [英] Response.Redirect using ~ Path

问题描述

我有，我想将用户重定向回位于我的web应用程序的根目录的登录页面的方法。

我用下面的code：

 的Response.Redirect（〜/的Login.aspx ReturnPath这样=？+ Request.Url.ToString（））;
 

这不，虽然工作。我的假设是，ASP.NET会自动解析URL到正确的路径。通常情况下，我只想用

 的Response.Redirect（../的Login.aspx ReturnPath这样=？+ Request.Url.ToString（））;
 

但这种code是一个母版页，并且可以从任何文件夹级别执行。我该如何解决此问题得到什么？

解决方案

  

我认为你需要删除〜/，并不仅仅是/代替它，我相信/是根

停在那儿！ :-)，除非你想硬code你的web应用程序，以便它可以只在一个网站的根目录进行安装。

〜/ 是的的正确的事情来使用，但如预期你原来的code没有工作的原因是， RESOLVEURL （这是由重定向内部使用）尝试先制定出如果你传递给它的路径是一个绝对URL（例如 *的的http：//服务器/ 的*富/ bar.htm，而不是富/ bar.htm） - 但不幸的是它通过简单地寻找一个冒号字符做到这一点：在''网址你给它。但在这种情况下，它发现在你的 ReturnPath这样查询字符串值给URL，这是傻瓜一个冒号 - 所以，你们的'〜/'没有得到解决<。 / p>

解决方法是，你应该URL编码它逃逸的问题在 ReturnPath这样值：与其他任何特殊字符一起

 的Response.Redirect（？〜/的Login.aspx ReturnPath这样=+ Server.UrlEn code（Request.Url.ToString（）））;
 

此外，我建议你（或任何人）从来不使用 Uri.ToString - 因为它给人类可读，更友好的URL的版本 - 不一个必然正确的（未逸出它的东西）。而是使用Uri.AbsoluteUri - 像这样：

 的Response.Redirect（？〜/的Login.aspx ReturnPath这样=+ Server.UrlEn code（Request.Url.AbsoluteUri））;
 

I have a method that where I want to redirect the user back to a login page located at the root of my web application.

I'm using the following code:

Response.Redirect("~/Login.aspx?ReturnPath=" + Request.Url.ToString());

This doesn't work though. My assumption was that ASP.NET would automatically resolve the URL into the correct path. Normally, I would just use

Response.Redirect("../Login.aspx?ReturnPath=" + Request.Url.ToString());

but this code is on a master page, and can be executed from any folder level. How do I get around this issue?

解决方案

I think you need to drop the "~/" and replace it with just "/", I believe / is the root

STOP RIGHT THERE! :-) unless you want to hardcode your web app so that it can only be installed at the root of a web site.

"~/" is the correct thing to use, but the reason that your original code didn't work as expected is that ResolveUrl (which is used internally by Redirect) tries to first work out if the path you are passing it is an absolute URL (e.g. "*http://server/*foo/bar.htm" as opposed to "foo/bar.htm") - but unfortunately it does this by simply looking for a colon character ':' in the URL you give it. But in this case it finds a colon in the URL you give in the ReturnPath query string value, which fools it - therefore your '~/' doesn't get resolved.

The fix is that you should be URL-encoding the ReturnPath value which escapes the problematic ':' along with any other special characters.

Response.Redirect("~/Login.aspx?ReturnPath=" + Server.UrlEncode(Request.Url.ToString()));

Additionally, I recommend that you (or anyone) never use Uri.ToString - because it gives a human-readable, more "friendly" version of the URL - not a necessarily correct one (it unescapes things). Instead use Uri.AbsoluteUri - like so:

Response.Redirect("~/Login.aspx?ReturnPath=" + Server.UrlEncode(Request.Url.AbsoluteUri));

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