124 lines
3.0 KiB
C#
124 lines
3.0 KiB
C#
using System;
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using System.Collections.Specialized;
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using System.Net;
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using System.Text;
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using System.Web;
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namespace CsharpHttpHelper.Helper
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{
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/// <summary>
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/// 和Url相关的帮助方法 Copyright：http://www.httphelper.com/
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/// </summary>
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internal class HttpUrlHelper
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{
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/// <summary>
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/// 使用指定的编码对象将 URL 编码的字符串转换为已解码的字符串。
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/// </summary>
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/// <param name="text">指定的字符串</param>
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/// <param name="encoding">指定编码默认为Default</param>
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/// <returns></returns>
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internal static string URLDecode(string text, Encoding encoding = null)
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{
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if (encoding == null)
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{
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encoding = Encoding.Default;
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}
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return HttpUtility.UrlDecode(text, encoding);
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}
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/// <summary>
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/// 使用指定的编码对象对 URL 字符串进行编码。
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/// </summary>
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/// <param name="text">指定的字符串</param>
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/// <param name="encoding">指定编码默认为Default</param>
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/// <returns></returns>
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internal static string URLEncode(string text, Encoding encoding = null)
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{
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if (encoding == null)
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{
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encoding = Encoding.Default;
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}
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return HttpUtility.UrlEncode(text, encoding);
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}
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/// <summary>
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/// 将Url参数字符串转为一个Key和Value的集合
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/// </summary>
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/// <param name="str">要转为集合的字符串</param>
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/// <returns>NameValueCollection</returns>
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internal static NameValueCollection GetNameValueCollection(string str)
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{
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NameValueCollection result = null;
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try
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{
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result = HttpUtility.ParseQueryString(str);
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}
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catch
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{
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}
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return result;
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}
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/// <summary>
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/// 提取网站主机部分就是host
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/// </summary>
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/// <param name="url">url</param>
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/// <returns>host</returns>
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internal static string GetUrlHost(string url)
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{
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try
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{
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return new Uri(url).Host;
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}
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catch
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{
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return string.Empty;
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}
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}
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/// <summary>
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/// 提取网址对应的IP地址
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/// </summary>
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/// <param name="url">url</param>
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/// <returns>返回Url对应的IP地址</returns>
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internal static string GetUrlIp(string url)
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{
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try
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{
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IPHostEntry hostByName = Dns.GetHostEntry(GetUrlHost(url));
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//IPHostEntry hostByName = Dns.GetHostByName(GetUrlHost(url));
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return hostByName.AddressList[0].ToString();
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}
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catch
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{
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return string.Empty;
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}
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}
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/// <summary>
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/// 获取当前页面的URL（五个数字可选 1~5 ）
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/// </summary>
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/// <param name="selectNO">1完整url,2域名之后,3域名之后不含参数,4只有域名,5获取参数</param>
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/// <returns></returns>
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public string getNowURL(int selectNO)
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{
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//string text = "";
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switch (selectNO)
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{
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case 1:
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return HttpContext.Current.Request.Url.ToString();
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case 2:
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return HttpContext.Current.Request.RawUrl;
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case 3:
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return HttpContext.Current.Request.Url.AbsolutePath;
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case 4:
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return HttpContext.Current.Request.Url.Host;
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case 5:
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return HttpContext.Current.Request.Url.Query;
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default:
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return HttpContext.Current.Request.Url.ToString();
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}
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}
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}
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}
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