问题描述
我试图确定在VB中如果URL是绝对的还是相对的。我敢肯定,必须有一些库可以做到这一点,但我不知道它。基本上我需要能够分析一个字符串,如相对/路径和或http://www.absolutepath.com/subpage'并确定它是否是绝对或相对的。先谢谢了。
I'm trying to determine in vb if a URL is absolute or relative. I'm sure there has to be some library that can do this but I'm not sure which. Basically I need to be able to analyze a string such as 'relative/path' and or 'http://www.absolutepath.com/subpage' and determine whether it is absolute or relative. Thanks in advance.
-Ben
推荐答案
您可以使用<$c$c>Uri.IsWellFormedUriString$c$c>方法,它需要一个 UriKind
作为参数,指定无论你是检查绝对或相对的。
You can use the Uri.IsWellFormedUriString
method, which takes a UriKind
as an argument, specifying whether you're checking for absolute or relative.
bool IsAbsoluteUrl(string url) {
if (!Uri.IsWellFormedUriString(url, UriKind.RelativeOrAbsolute)) {
throw new ArgumentException("URL was in an invalid format", "url");
}
return Uri.IsWellFormedUriString(url, UriKind.Absolute);
}
IsAbsoluteUrl("http://www.absolutepath.com/subpage"); // true
IsAbsoluteUrl("/subpage"); // false
IsAbsoluteUrl("subpage"); // false
IsAbsoluteUrl("http://www.absolutepath.com"); // true
这篇关于确定一个地址是绝对的还是相对的从VB的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!