合并两个URI时,路径部分会被覆盖

Question

我需要组合两个包含.Path信息的URL.

我想使用Uri.TryCreate()的可能性,所以我可以捕获格式错误的URL.

我面临的问题是,当我合并绝对URI和相对URI时,似乎忽略了基URI路径:

Uri absoluteUri= new Uri("http://hostname/path/", UriKind.Absolute);
Uri relativeUri = new Uri("/my subsite/my page.aspx?my=query", UriKind.Relative);
Uri resultUri;
if (!Uri.TryCreate(absoluteUri, relativeUri, out resultUri))
      // handle errors

以上输出是:

http://hostname/my%20subsite/my%20page.aspx?my=query

我希望它是:

http://hostname/path/my%20subsite/my%20page.aspx?my=query

有没有办法组合使用Uri类包含路径信息的URL ？

Answer 1

您的相对URI应该是相对的,即删除第一个斜杠(或添加句点),

string relative = "/my subsite/my page.aspx?my=query";

Uri test1= new Uri(relative.Substring(1), UriKind.Relative); // without 'root'
Uri test2= new Uri("." + relative, UriKind.Relative);        // with 'current'

工作范例:

Uri baseUri = new Uri("http://hostname/path/");
string relative = "/my subsite/my page.aspx?my=query";

Uri test1 = new Uri(baseUri, relative);              // original string
Uri test2 = new Uri(baseUri, relative.Substring(1)); // without 'root' character
Uri test3 = new Uri(baseUri, "." + relative);        // with 'current' character

Console.WriteLine(test1.OriginalString); // wrong
Console.WriteLine(test2.OriginalString); // right!
Console.WriteLine(test3.OriginalString); // right!

所以,你可能应该像这样处理你的相关部分:

if (relative.StartsWith("/"))
    relative = "." + relative;