Uri.ToString()和Uri.AbsoluteUri之间的区别是什么?

As a comment to an Azure question just now, @smarx noted

@smarx是对Azure问题的评论

I think it's generally better to do blob.Uri.AbsoluteUri than blob.Uri.ToString().

我认为做blob.Uri通常更好。比blob.Uri.ToString AbsoluteUri()。

Is there a reason for this? The documentation for Uri.AbsoluteUri notes that it "Gets the absolute URI", Uri.ToString() "Gets a canonical string representation for the specified instance."

这有什么原因吗?的文档Uri。AbsoluteUri注意它会“获得绝对URI”，URI。tostring ()获取指定实例的规范字符串表示形式。

4 个解决方案

#1

Given for example:

给出的例子:

UriBuilder builder = new UriBuilder("http://somehost/somepath");
builder.Query = "somekey=" + HttpUtility.UrlEncode("some+value");
Uri someUri = builder.Uri;

In this case, Uri.ToString() will return a human-readable URL: http://somehost/somepath?somekey=some+value

在这种情况下，Uri.ToString()将返回一个人类可读的URL: http://somehost/somepath?

Uri.AbsoluteUri on the other hand will return the encoded form as HttpUtility.UrlEncode returned it: http://somehost/somepath?somekey=some%2bvalue

Uri。另一方面，AbsoluteUri将返回编码形式为HttpUtility。UrlEncode返回:http://somehost/somepath?somekey=some%2bvalue

#2

Additionally: If your Uri is a relative Uri AbsoluteUri will fail, ToString() not.

另外:如果您的Uri是相对Uri，那么绝对Uri将会失败，ToString()不会。

Uri uri = new Uri("fuu/bar.xyz", UriKind.Relative);
string str1 = uri.ToString(); // "fuu/bar.xyz"
string str2 = uri.AbsoluteUri; // InvalidOperationException

#3

Since everybody seems to think that uri.AbsoluteUri is better, but because it fails with relative paths, then probably the universal way would be:

因为大家似乎都这么认为，uri。绝对uri更好，但是因为它在相对路径上失败了，所以可能通用的方法是:

Uri uri = new Uri("fuu/bar.xyz", UriKind.Relative);
string notCorruptUri = Uri.EscapeUriString(uri.ToString());

#4

Why not check and use the correct one?

为什么不检查并使用正确的呢?

string GetUrl(Uri uri) => uri?.IsAbsoluteUri == true ? uri?.AbsoluteUri : uri?.ToString();

#1