自定义的针对URL地址的处理类代码,CSharp代码库,德仔网

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【CSharp】自定义的针对URL地址的处理类

作者:feige / 发布于2014/8/10/ 587

这个C#类是专门针对URL网址处理的类，可以对URL地址进行Base64的加密和解密，可以通过函数的方式向URL添加参数，可以更新URL中已有参数的值，分析URL地址的域名、子域名，分析URL的所有参数和参数值，功能非常全面，还可以自己扩充.


	using System;
	using System.Text.RegularExpressions;
	using System.Web;
	using System.Collections.Specialized;
	
	namespace DotNet.Utilities
	{
	 /// <summary>
	 /// URL的操作类
	 /// </summary>
	 public class UrlOper
	 {
	 static System.Text.Encoding encoding = System.Text.Encoding.UTF8;
	
	 #region URL的64位编码
	 public static string Base64Encrypt(string sourthUrl)
	 {
	 string eurl = HttpUtility.UrlEncode(sourthUrl);
	 eurl = Convert.ToBase64String(encoding.GetBytes(eurl));
	 return eurl;
	 }
	 #endregion
	
	 #region URL的64位解码
	 public static string Base64Decrypt(string eStr)
	 {
	 if (!IsBase64(eStr))
	 {
	 return eStr;
	 }
	 byte[] buffer = Convert.FromBase64String(eStr);
	 string sourthUrl = encoding.GetString(buffer);
	 sourthUrl = HttpUtility.UrlDecode(sourthUrl);
	 return sourthUrl;
	 }
	 /// <summary>
	 /// 是否是Base64字符串
	 /// </summary>
	 /// <param name="eStr"></param>
	 /// <returns></returns>
	 public static bool IsBase64(string eStr)
	 {
	 if ((eStr.Length % 4) != 0)
	 {
	 return false;
	 }
	 if (!Regex.IsMatch(eStr, "^[A-Z0-9/+=]*$", RegexOptions.IgnoreCase))
	 {
	 return false;
	 }
	 return true;
	 }
	 #endregion
	
	 /// <summary>
	 /// 添加URL参数
	 /// </summary>
	 public static string AddParam(string url, string paramName, string value)
	 {
	 Uri uri = new Uri(url);
	 if (string.IsNullOrEmpty(uri.Query))
	 {
	 string eval = HttpContext.Current.Server.UrlEncode(value);
	 return String.Concat(url, "?" + paramName + "=" + eval);
	 }
	 else
	 {
	 string eval = HttpContext.Current.Server.UrlEncode(value);
	 return String.Concat(url, "&" + paramName + "=" + eval);
	 }
	 }
	 /// <summary>
	 /// 更新URL参数
	 /// </summary>
	 public static string UpdateParam(string url, string paramName, string value)
	 {
	 string keyWord = paramName+"=";
	 int index = url.IndexOf(keyWord)+keyWord.Length;
	 int index1 = url.IndexOf("&", index);
	 if (index1 == -1)
	 {
	 url = url.Remove(index, url.Length - index);
	 url = string.Concat(url, value);
	 return url;
	 }
	 url = url.Remove(index,index1 - index);
	 url = url.Insert(index, value);
	 return url;
	 }
	
	 #region 分析URL所属的域
	 public static void GetDomain(string fromUrl, out string domain, out string subDomain)
	 {
	 domain = "";
	 subDomain = "";
	 try
	 {
	 if (fromUrl.IndexOf("的名片") > -1)
	 {
	 subDomain = fromUrl;
	 domain = "名片";
	 return;
	 }
	
	 UriBuilder builder = new UriBuilder(fromUrl);
	 fromUrl = builder.ToString();
	
	 Uri u = new Uri(fromUrl);
	
	 if (u.IsWellFormedOriginalString())
	 {
	 if (u.IsFile)
	 {
	 subDomain = domain = "客户端本地文件路径";
	
	 }
	 else
	 {
	 string Authority = u.Authority;
	 string[] ss = u.Authority.Split('.');
	 if (ss.Length == 2)
	 {
	 Authority = "www." + Authority;
	 }
	 int index = Authority.IndexOf('.', 0);
	 domain = Authority.Substring(index + 1, Authority.Length - index - 1).Replace("comhttp","com");
	 subDomain = Authority.Replace("comhttp", "com");
	 if (ss.Length < 2)
	 {
	 domain = "不明路径";
	 subDomain = "不明路径";
	 }
	 }
	 }
	 else
	 {
	 if (u.IsFile)
	 {
	 subDomain = domain = "客户端本地文件路径";
	 }
	 else
	 {
	 subDomain = domain = "不明路径";
	 }
	 }
	 }
	 catch
	 {
	 subDomain = domain = "不明路径";
	 }
	 }
	
	 /// <summary>
	 /// 分析 url 字符串中的参数信息。sharejs.com
	 /// </summary>
	 /// <param name="url">输入的 URL</param>
	 /// <param name="baseUrl">输出 URL 的基础部分</param>
	 /// <param name="nvc">输出分析后得到的 (参数名,参数值) 的集合</param>
	 public static void ParseUrl(string url, out string baseUrl, out NameValueCollection nvc)
	 {
	 if (url == null)
	 throw new ArgumentNullException("url");
	
	 nvc = new NameValueCollection();
	 baseUrl = "";
	
	 if (url == "")
	 return;
	
	 int questionMarkIndex = url.IndexOf('?');
	
	 if (questionMarkIndex == -1)
	 {
	 baseUrl = url;
	 return;
	 }
	 baseUrl = url.Substring(0, questionMarkIndex);
	 if (questionMarkIndex == url.Length - 1)
	 return;
	 string ps = url.Substring(questionMarkIndex + 1);
	
	 // 开始分析参数对
	 Regex re = new Regex(@"(^|&)?(\w+)=([^&]+)(&|$)?", RegexOptions.Compiled);
	 MatchCollection mc = re.Matches(ps);
	
	 foreach (Match m in mc)
	 {
	 nvc.Add(m.Result("$2").ToLower(), m.Result("$3"));
	 }
	 }
	
	 #endregion
	 }
	}

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