private string GetShortApiUrl(ShortApiUrlType type, out string strPost)
{
string result = "";
switch (type)
{
case ShortApiUrlType.goo_gl:
result = "http://goo.gl/api/url";
strPost = "&[email protected]&url={0}";
break;
case ShortApiUrlType.dwn_cn:
result = "http://dwz.cn/create.php";
strPost = "&url={0}";
break;
case ShortApiUrlType.t_cn:
//xml:http://api.t.sina.com.cn/short_url/shorten.xml
//json:http://api.t.sina.com.cn/short_url/shorten.json
//source:应用的appkey
//url_long:需要转换的长链接
result = "http://api.t.sina.com.cn/short_url/shorten.json?source=1338661855";
strPost = "&url_long={0}";
break;
default:
strPost = null;
break;
}
return(result);
}
/// <summary>
/// 获取Url别名
/// </summary>
/// <param name="url">需要处理的Url</param>
/// <param name="type"></param>
/// <returns>返回Url别名</returns>
public string GetApiShortUrl(string url, ShortApiUrlType type = ShortApiUrlType.dwn_cn)
{
try
{
string strPost;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(GetShortApiUrl(type, out strPost));
string post = string.Format(strPost, System.Net.WebUtility.UrlEncode(url));
request.ServicePoint.Expect100Continue = true;
request.Method = "post";
request.UserAgent = "toolbar";
request.ContentLength = post.Length;
request.ContentType = "application/x-www-form-urlencoded";
request.Headers.Add("Cache-Control", "no-cache");
using (Stream requestStream = request.GetRequestStream())
{
byte[] postBuffer = Encoding.ASCII.GetBytes(post);
requestStream.Write(postBuffer, 0, postBuffer.Length);
}
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
string encoding = response.ContentEncoding;
if (encoding == null || encoding.Length < 1)
{
encoding = "UTF-8"; //默认编码
}
using (StreamReader responseReader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
{
url = responseReader.ReadToEnd();
}
}
return(url);
}
catch
{
return(url);
}
}