C# Url操作类封装、仿Node.Js中的Url模块
1.简单实例
目前常用Url操作，查询、添加、修改、删除链接参数，重构生成链接等功能
//string url = "http://www.gongjuji.net:8081";
//string url = "http://www.gongjuji.net/";
//string url = "http://www.gongjuji.net/abc";
// string url = "http://www.gongjuji.net/abc/1234.html";
string url = "http://www.gongjuji.net/abc/1234.html?name=张三&age=1234#one#two";
//string url = "http://www.gongjuji.net/abc/1234.html?name=&age=#one#two";
//string url = "/abc/123.html?name=张三&age=1234#one#two";
// string url = "https://mp.weixin.qq.com/debug/cgi-bin/apiinfo?t=index&type=%E7%94%A8%E6%88%B7%E7%AE%A1%E7%90%86&form=%E8%8E%B7%E5%8F%96%E5%85%B3%E6%B3%A8%E8%80%85%E5%88%97%E8%A1%A8%E6%8E%A5%E5%8F%A3%20/user/get";
UrlAnalyze _url = new UrlAnalyze(url);
JObject obj = JObject.FromObject(_url);
Console.WriteLine(obj);
//添加或修改参数
_url.AddOrUpdateSearch("page", "2");
_url.AddOrUpdateSearch("name", "李四");
//重新生成链接参数
Console.WriteLine(_url.GetUrl());
Console.WriteLine(_url.GetUrl(true));
识别字符串中的url
//string source = "工具集：http://www.gongjuji.net";
string source = @"工具集：
http://www.gongjuji.net
爱汉字：http://hanzi.tianma3798.cn";
List result = UrlAnalyze.GetUrlList(source);
foreach (var item in result)
{
Console.WriteLine(item);
}
//替换成a标签
string result2 = UrlAnalyze.ReplaceToA(source);
Console.WriteLine(result2); 
属性和部分功能模仿了Node.js的url模块，参考：http://blog.csdn.net/u011127019/article/details/52350172
源代码定义：
///
/// Url地址的格式化和反格式化
///
public class UrlAnalyze
{
///
/// 协议名称
///
public string Protocol { get; set; }
///
/// 是否以反斜杠结尾
///
public bool Slashes { get; set; }
///
/// 验证信息，暂时不使用
///
public string Auth { get; set; }
///
/// 全小写主机部分，包括端口
///
public string Host
{
get
{
if (this.Port == null)
return this.HostName;
return string.Format("{0}:{1}", this.HostName, this.Port);
}
}
///
/// 端口，为空时http默认是80
///
public int? Port { get; set; }
///
/// 小写主机部分
///
public string HostName { get; set; }
///
/// 页面锚点参数部分 #one#two
///
public string Hash { get; set; }
///
/// 链接查询参数部分(带问号) ?one=1&two=2
///
public string Search { get; set; }
///
/// 路径部分
///
public string PathName { get; set; }
///
/// 路径+参数部分(没有锚点)
///
public string Path
{
get
{
if (string.IsNullOrEmpty(this.Search))
return this.PathName;
return PathName + Search;
}
}
///
/// 转码后的原链接
///
public string Href { get; set; }
///
/// 参数的key=value 列表
///
private Dictionary _SearchList = null;
#region 初始化处理
///
/// 空初始化
///
public UrlAnalyze() { _SearchList = new Dictionary(); }
///
/// 初始化处理
///
/// 指定相对或绝对链接
public UrlAnalyze(string url)
{
//1.转码操作
this.Href = HttpUtility.UrlDecode(url);
InitParse(this.Href);
//是否反斜杠结尾
if (!string.IsNullOrEmpty(PathName))
this.Slashes = this.PathName.EndsWith("/");
//初始化参数列表
_SearchList = GetSearchList();
}
///
/// 将字符串格式化成对象时初始化处理
///
private void InitParse(string url)
{
//判断是否是指定协议的绝对路径
if (url.Contains("://"))
{
// Regex reg = new Regex(@"(\w+):\/\/([^/:]+)(:\d*)?([^ ]*)");
Regex reg = new Regex(@"(\w+):\/\/([^/:]+)(:\d*)?(.*)");
Match match = reg.Match(url);
//协议名称
this.Protocol = match.Result("$1");
//主机
this.HostName = match.Result("$2");
//端口
string port = match.Result("$3");
if (string.IsNullOrEmpty(port) == false)
{
port = port.Replace(":", "");
this.Port = Convert.ToInt32(port);
}
//路径和查询参数
string path = match.Result("$4");
if (string.IsNullOrEmpty(path) == false)
InitPath(path);
}
else
{
InitPath(url);
}
}
///
/// 字符串url格式化时，路径和参数的初始化处理
///
///
private void InitPath(string path)
{
Regex reg = new Regex(@"([^#?& ]*)(\??[^#]*)(#?[^?& ]*)");
Match match = reg.Match(path);
//路径和查询参数
this.PathName = match.Result("$1");
this.Search = match.Result("$2");
this.Hash = match.Result("$3");
}
#endregion
#region 参数处理
///
/// 获取当前参数解析结果字典列表
///
/// GetSearchList()
{
if (_SearchList != null)
return _SearchList;
_SearchList = new Dictionary();
if (!string.IsNullOrEmpty(Search))
{
Regex reg = new Regex(@"(^|&)?(\w+)=([^&]*)", RegexOptions.Compiled);
MatchCollection coll = reg.Matches(Search);
foreach (Match item in coll)
{
string key = item.Result("$2").ToLower();
string value = item.Result("$3");
_SearchList.Add(key, value);
}
}
return _SearchList;
}
///
/// 获取查询参数的值
///
/// 键
///
/// 添加参数key=value,如果值已经存在则修改
///
/// 键
/// 值
///
/// 删除指定key 的键值对
///
/// 键
public void Remove(string key)
{
if (_SearchList.Any(q => q.Key == key))
_SearchList.Remove(key);
}
///
/// 获取锚点列表
///
/// GetHashList()
{
List list = new List();
if (!string.IsNullOrEmpty(Hash))
{
list = Hash.Split('#').Where(q => string.IsNullOrEmpty(q) == false)
.ToList();
}
return list;
}
#endregion
///
/// 获取最终url地址,
/// 对参数值就行UrlEncode 编码后，有可能和原链接不相同
///
/// searchList = GetSearchList();
if (searchList != null && searchList.Count > 0)
{
builder.Append("?");
bool isFirst = true;
foreach (var item in searchList)
{
if (isFirst == false)
{
builder.Append("&");
}
isFirst = false;
builder.AppendFormat("{0}={1}", item.Key, EncodeValue ? HttpUtility.UrlEncode(item.Value) : item.Value);
}
}
//锚点
builder.Append(Hash);
return builder.ToString();
}
#region 静态方法
///
/// 获取源字符串中所有的链接（可能有重复）
///
/// 源字符串
/// GetUrlList(string content)
{
List list = new List();
Regex re = new Regex(@"(?http(s)?://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?)");
MatchCollection mc = re.Matches(content);
foreach (Match m in mc)
{
if (m.Success)
{
string url = m.Result("${url}");
list.Add(url);
}
}
return list;
}
///
/// 将字符串中的链接成标签
///
///
/// http(s)?://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?)");
MatchCollection mc = re.Matches(content);
foreach (Match m in mc)
{
content = content.Replace(m.Result("${url}"), String.Format("{0}", m.Result("${url}")));
}
return content;
}
#endregion
} 所属源代码库：https://github.com/tianma3798/Common