检查2个URL是否相等

如果2个URL相等，那么是否存在围绕该测试的方法，即指向相同的位置。 我不是在谈论具有指向相同IP地址的不同域名的2个URL，而是例如指向相同.aspx页面的2个URL：

• http://example.com/Products/Default.aspx?A=B&C=D&E=F

等于这些：

• http://example.com/Products/Default.aspx
• http://example.com/Products/
• 〜/产品/ Default.aspx的
• 〜/产品/

备注/ assumtions

1. QueryString值被忽略
2. ASP.NET（Pref C＃）
3. Default.aspx是默认页面

—- —-更新

这是一个非常粗略的方法，它测试URL以查看是否与当前URL匹配：我尝试使用本地URL和检查URL创建一个新的Uri（），但是不知道它是否有效并且在字符串检查路径上运行。 如果URL以“Http”开头，则SiteMapProvider的实现会跳过此步骤，因为这假设是外部URL。 由于我有一个始终确保相对路径的SaaS框架（因为它们可以在不同的子域上），因此更容易剥离。

有关优化的评论吗？ 我想一开始我们可以传入一个包含当前URL的变量吗？ 不确定多次调用HttpContext.Current.Request.Url.LocalPath的开销？

/// 
 /// Assumes URL is relative aspx page or folder path /// 
 ///  ///  public static bool CurrentURLMatch(string url) { string localURL = HttpContext.Current.Request.Url.LocalPath; if (HttpContext.Current.Request.Url.Host == "localhost") { localURL = localURL.Substring(localURL.IndexOf('/') + 1); localURL = localURL.Substring(localURL.IndexOf('/')); } string compareURL = url.ToLower(); // Remove QueryString Values if (localURL.Contains("?")) { localURL = localURL.Split('?')[0]; } if (compareURL.Contains("?")) { compareURL = compareURL.Split('?')[0]; } if (localURL.Contains("#")) { localURL = localURL.Split('#')[0]; } if (compareURL.Contains("?")) { compareURL = compareURL.Split('#')[0]; } // Prepare End of Local URL if (!localURL.Contains("aspx")) { if (!localURL.EndsWith("/")) { localURL = String.Concat(localURL, "/"); } } // Prepare End of Compare URL if (!compareURL.Contains("aspx")) { if (!compareURL.EndsWith("/")) { compareURL = String.Concat(localURL, "/"); } } if (localURL.EndsWith(@"/")) { localURL = String.Concat(localURL, "Default.aspx"); } if (compareURL.EndsWith(@"/")) { compareURL = String.Concat(compareURL, "Default.aspx"); } if (compareURL.Contains(@"//")) { compareURL = compareURL.Replace(@"//", String.Empty); compareURL = compareURL.Substring(compareURL.IndexOf("/") + 1); } compareURL = compareURL.Replace("~", String.Empty); if (localURL == compareURL) { return true; } return false; } 

Answer 1

您可能正在寻找URL规范化技术。 他们可能是一个很好的起点:)

一旦您对URL进行了规范化，您只需要检查它们是否相等（请记住您的假设，例如，您丢弃查询字符串）。

Answer 2

为了记录，这里是http://en.wikipedia.org/wiki/URL%5Fnormalization到C＃的翻译：

 using System; using System.Web; namespace UrlNormalizationTest { public static class UrlNormalization { public static bool AreTheSameUrls(this string url1, string url2) { url1 = url1.NormalizeUrl(); url2 = url2.NormalizeUrl(); return url1.Equals(url2); } public static bool AreTheSameUrls(this Uri uri1, Uri uri2) { var url1 = uri1.NormalizeUrl(); var url2 = uri2.NormalizeUrl(); return url1.Equals(url2); } public static string[] DefaultDirectoryIndexes = new[] { "default.asp", "default.aspx", "index.htm", "index.html", "index.php" }; public static string NormalizeUrl(this Uri uri) { var url = urlToLower(uri); url = limitProtocols(url); url = removeDefaultDirectoryIndexes(url); url = removeTheFragment(url); url = removeDuplicateSlashes(url); url = addWww(url); url = removeFeedburnerPart(url); return removeTrailingSlashAndEmptyQuery(url); } public static string NormalizeUrl(this string url) { return NormalizeUrl(new Uri(url)); } private static string removeFeedburnerPart(string url) { var idx = url.IndexOf("utm_source=", StringComparison.Ordinal); return idx == -1 ? url : url.Substring(0, idx - 1); } private static string addWww(string url) { if (new Uri(url).Host.Split('.').Length == 2 && !url.Contains("://www.")) { return url.Replace("://", "://www."); } return url; } private static string removeDuplicateSlashes(string url) { var path = new Uri(url).AbsolutePath; return path.Contains("//") ? url.Replace(path, path.Replace("//", "/")) : url; } private static string limitProtocols(string url) { return new Uri(url).Scheme == "https" ? url.Replace("https://", "http://") : url; } private static string removeTheFragment(string url) { var fragment = new Uri(url).Fragment; return string.IsNullOrWhiteSpace(fragment) ? url : url.Replace(fragment, string.Empty); } private static string urlToLower(Uri uri) { return HttpUtility.UrlDecode(uri.AbsoluteUri.ToLowerInvariant()); } private static string removeTrailingSlashAndEmptyQuery(string url) { return url .TrimEnd(new[] { '?' }) .TrimEnd(new[] { '/' }); } private static string removeDefaultDirectoryIndexes(string url) { foreach (var index in DefaultDirectoryIndexes) { if (url.EndsWith(index)) { url = url.TrimEnd(index.ToCharArray()); break; } } return url; } } } 

通过以下测试：

 using NUnit.Framework; using UrlNormalizationTest; namespace UrlNormalization.Tests { [TestFixture] public class UnitTests { [Test] public void Test1ConvertingTheSchemeAndHostToLowercase() { var url1 = "HTTP://www.Example.com/".NormalizeUrl(); var url2 = "http://www.example.com/".NormalizeUrl(); Assert.AreEqual(url1, url2); } [Test] public void Test2CapitalizingLettersInEscapeSequences() { var url1 = "http://www.example.com/a%c2%b1b".NormalizeUrl(); var url2 = "http://www.example.com/a%C2%B1b".NormalizeUrl(); Assert.AreEqual(url1, url2); } [Test] public void Test3DecodingPercentEncodedOctetsOfUnreservedCharacters() { var url1 = "http://www.example.com/%7Eusername/".NormalizeUrl(); var url2 = "http://www.example.com/~username/".NormalizeUrl(); Assert.AreEqual(url1, url2); } [Test] public void Test4RemovingTheDefaultPort() { var url1 = "http://www.example.com:80/bar.html".NormalizeUrl(); var url2 = "http://www.example.com/bar.html".NormalizeUrl(); Assert.AreEqual(url1, url2); } [Test] public void Test5AddingTrailing() { var url1 = "http://www.example.com/alice".NormalizeUrl(); var url2 = "http://www.example.com/alice/?".NormalizeUrl(); Assert.AreEqual(url1, url2); } [Test] public void Test6RemovingDotSegments() { var url1 = "http://www.example.com/../a/b/../c/./d.html".NormalizeUrl(); var url2 = "http://www.example.com/a/c/d.html".NormalizeUrl(); Assert.AreEqual(url1, url2); } [Test] public void Test7RemovingDirectoryIndex1() { var url1 = "http://www.example.com/default.asp".NormalizeUrl(); var url2 = "http://www.example.com/".NormalizeUrl(); Assert.AreEqual(url1, url2); } [Test] public void Test7RemovingDirectoryIndex2() { var url1 = "http://www.example.com/default.asp?id=1".NormalizeUrl(); var url2 = "http://www.example.com/default.asp?id=1".NormalizeUrl(); Assert.AreEqual(url1, url2); } [Test] public void Test7RemovingDirectoryIndex3() { var url1 = "http://www.example.com/a/index.html".NormalizeUrl(); var url2 = "http://www.example.com/a/".NormalizeUrl(); Assert.AreEqual(url1, url2); } [Test] public void Test8RemovingTheFragment() { var url1 = "http://www.example.com/bar.html#section1".NormalizeUrl(); var url2 = "http://www.example.com/bar.html".NormalizeUrl(); Assert.AreEqual(url1, url2); } [Test] public void Test9LimitingProtocols() { var url1 = "https://www.example.com/".NormalizeUrl(); var url2 = "http://www.example.com/".NormalizeUrl(); Assert.AreEqual(url1, url2); } [Test] public void Test10RemovingDuplicateSlashes() { var url1 = "http://www.example.com/foo//bar.html".NormalizeUrl(); var url2 = "http://www.example.com/foo/bar.html".NormalizeUrl(); Assert.AreEqual(url1, url2); } [Test] public void Test11AddWww() { var url1 = "http://example.com/".NormalizeUrl(); var url2 = "http://www.example.com".NormalizeUrl(); Assert.AreEqual(url1, url2); } [Test] public void Test12RemoveFeedburnerPart() { var url1 = "http://site.net/2013/02/firefox-19-released/?utm_source=rss&utm_medium=rss&utm_campaign=firefox-19-released".NormalizeUrl(); var url2 = "http://site.net/2013/02/firefox-19-released".NormalizeUrl(); Assert.AreEqual(url1, url2); } } } 

Answer 3

在将每个部分转换为正确的格式之后，您可以使用Uri类来检查url的各个部分。

 // Create the URI objects // TODO: Use the right constructor overloads, // or do some processing beforehand to accomodate for the different scenarios Uri uri1 = new Uri(url1); Uri uri2 = new Uri(url2); // There are overlaods for the constructor too Uri uri3 = new Uri(url3, UriKind.Absolute); // Check the correct properties // TODO: Use the right properties... if (uri1.AbsolutePath == uri2.AbsolutePath) { // Urls match } 

Answer 4

也许本教程对您有所帮助？

“…您想了解如何在站点地图中处理相同的url（开箱即用的SiteMapProvider禁止这样做）……”

 /// 
 /// SiteMap datasources cannot have duplicate Urls with the default provider. /// This finds duplicate urls in your heirarchy and tricks the provider into treating /// them correctly /// 
 private void modifyDuplicateUrls() { StringCollection urls = new StringCollection(); string rowUrl = String.Empty; uint duplicateCounter = 0; string urlModifier = String.Empty; foreach (DataTable dt in this.DataSource.Tables) { foreach (DataRow dr in dt.Rows) { rowUrl = (string)dr["Url"]; if (urls.Contains(rowUrl)) { duplicateCounter++; if (rowUrl.Contains("?")) { urlModifier = "&instance=" + duplicateCounter.ToString(); } else { urlModifier = "?instance=" + duplicateCounter.ToString(); } dr["Url"] = rowUrl + urlModifier; } else { urls.Add(rowUrl); } } } } } 

Answer 5

如果两个URL都看到Server.MapPath是否相等呢？ （假设这是一个ASP.NET应用程序，而不是ASP.NET MVC）

 if (Server.MapPath(url1).ToLower() == Server.MapPath(url2).ToLower()) { return true; } else { return false; } 

Answer 6

坦率地说，只需加载URL并比较他们的HTML内容？