更换 Uri 中的主机

使用.NET 替换 Uri 的主机部分的最好方法是什么？

例如:

string ReplaceHost(string original, string newHostName);
//...
string s = ReplaceHost("http://oldhostname/index.html", "newhostname");
Assert.AreEqual("http://newhostname/index.html", s);
//...
string s = ReplaceHost("http://user:pass@oldhostname/index.html", "newhostname");
Assert.AreEqual("http://user:pass@newhostname/index.html", s);
//...
string s = ReplaceHost("ftp://user:pass@oldhostname", "newhostname");
Assert.AreEqual("ftp://user:pass@newhostname", s);
//etc.

系统。 Uri 似乎没有太大的帮助。

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小开

最佳答案

System.UriBuilder is what you are after...

string ReplaceHost(string original, string newHostName) {
var builder = new UriBuilder(original);
builder.Host = newHostName;
return builder.Uri.ToString();
}

小开

As @Ishmael says, you can use System.UriBuilder. Here's an example:

// the URI for which you want to change the host name
var oldUri = Request.Url;


// create a new UriBuilder, which copies all fragments of the source URI
var newUriBuilder = new UriBuilder(oldUri);


// set the new host (you can set other properties too)
newUriBuilder.Host = "newhost.com";


// get a Uri instance from the UriBuilder
var newUri = newUriBuilder.Uri;