C#实现土豆优酷等网站视频的缩略图

分类： ASP.NET 2012-03-27 16:01 154人阅读评论(2) 收藏举报

　　第一次写博客，心里有点小激动！前一段时间做一个ASP.NET网站时涉及到发布视频的功能。这个功能要求给一个连接地址，然后生成视频缩略图，并提供播放功能！

　　我是从百度找到谷歌都没有找到好的解决方案，包括CSDN上面提供一些案例代码，下载下来全是忽悠人，赚取我的积分啊！坑爹呀！你妹呀！好了，现在开始介绍我自己在优酷和土豆地址中找到的一些规律，做出的一点点东西！可能不是很全！

发布视频的时候可以发布视频的网页地址(.html)，也可以发布视频(.swf)地址

　　优酷视频：

　　第一种情况：　

　　http://v.youku.com/v_show/id_XMzY3NzExNjgw.html

　　http://player.youku.com/player.php/sid/XMzY3NzExNjgw/v.swf

　　第二种情况：

　　http://v.youku.com/v_playlist/f17213424o1p0.html 　　　　　

　　http://player.youku.com/player.php/Type/Folder/Fid/17213424/Ob/1/Pt/0/sid/XMzE2MzI5MDMy/v.swf

重要的一个地址：http://v.youku.com/player/getPlayList/VideoIDS/XMzE2MzI5MDMy/version/5/source/out?onData=%5Btype%20Function%5D&n=3 此地址是获取视频缩略图的！我们可以模仿http请求该地址获取存有缩略图的源文件！其中｛0｝是参数，该参数是从.swf视频地址中获取的。比如以上第一种情况中XMzY3NzExNjgw或者是第二中情况中XMzE2MzI5MDMy都是视频的唯一标识值。以下分析图

给出优酷网页地址：

[csharp] view plain copy print ?

//根据输入的网页地址截取出唯一id，根据id拼出视频地址
string hyouKuVideoUrlById = "http://player.youku.com/player.php/sid/{0}/v.swf";
//根据视频地址提供的唯一id，请求出缩略图所在地址 string syouKuPicUrlById = "http://v.youku.com/player/getPlayList/VideoIDS/{0}/version/5/source/out?onData=%5Btype%20Function%5D&n=3";
string htmlRegxStr = "id=\"link[0-9]+\"[ ]+value=\"http://([\\w]+[.])+[/.\\w_]+";
public override string[] GetVideoInfo(string url)
{
Result[0] = url;
string videoName = GetVideoIdFromUrl(url);
#region //http://v.youku.com/v_show/id_XMjkwMzAwMzY4.html
if (videoName.ToLower().StartsWith("id_"))
{
videoName = videoName.Trim().Remove(0, 3);
Result[1] = CombineStr(hyouKuVideoUrlById, videoName);
Result[2] = GetSomething(
GetResultFromUrl(CombineStr(syouKuPicUrlById, videoName)).Replace(@"\/", "/"),
imgLinkRegxStr
);//"(http://[^\"]+)[\\w\\W]+\"title\":\"([^\"]+)\""
}
#endregion
#region //http://v.youku.com/v_playlist/f17213424o1p0.html
else if (videoName.ToLower().StartsWith("f"))
{
string info = GetResultFromUrl(url);
MatchCollection cc = GetSomethingCollection(info, htmlRegxStr);
for (int i = 0; i < cc.Count; i++)
{
Result[1] = GetSomething(cc[i].Value, hypeLinkRegxStr);
if (Result[1].ToLower().EndsWith(".swf"))
{
break;
}
}
if (Result[1] != "")
{
string getIed = GetVideoId(Result[1], '/', 1);
if (getIed != "")
{
Result[2] = GetSomething(GetResultFromUrl(CombineStr(syouKuPicUrlById, getIed)).Replace(@"\/", "/"), imgLinkRegxStr);
}
}
}
#endregion
#region else
else
{
//扩展其他情况：
}
#endregion
return Result;
}

//根据输入的网页地址截取出唯一id，根据id拼出视频地址
 string hyouKuVideoUrlById = "http://player.youku.com/player.php/sid/{0}/v.swf";
 //根据视频地址提供的唯一id，请求出缩略图所在地址  string syouKuPicUrlById = "http://v.youku.com/player/getPlayList/VideoIDS/{0}/version/5/source/out?onData=%5Btype%20Function%5D&n=3";
        string htmlRegxStr = "id=\"link[0-9]+\"[ ]+value=\"http://([\\w]+[.])+[/.\\w_]+";

        public override string[] GetVideoInfo(string url)
        {
            Result[0] = url;
            string videoName = GetVideoIdFromUrl(url);

            #region //http://v.youku.com/v_show/id_XMjkwMzAwMzY4.html
            if (videoName.ToLower().StartsWith("id_"))
            {

                videoName = videoName.Trim().Remove(0, 3);
                Result[1] = CombineStr(hyouKuVideoUrlById, videoName);
                Result[2] = GetSomething(
                            GetResultFromUrl(CombineStr(syouKuPicUrlById, videoName)).Replace(@"\/", "/"),
                            imgLinkRegxStr
                            );//"(http://[^\"]+)[\\w\\W]+\"title\":\"([^\"]+)\""
            }
            #endregion

            #region //http://v.youku.com/v_playlist/f17213424o1p0.html
            else if (videoName.ToLower().StartsWith("f"))
            {
                string info = GetResultFromUrl(url);
                MatchCollection cc = GetSomethingCollection(info, htmlRegxStr);

                for (int i = 0; i < cc.Count; i++)
                {
                    Result[1] = GetSomething(cc[i].Value, hypeLinkRegxStr);
                    if (Result[1].ToLower().EndsWith(".swf"))
                    {
                        break;
                    }
                }
                if (Result[1] != "")
                {
                    string getIed = GetVideoId(Result[1], '/', 1);
                    if (getIed != "")
                    {
                        Result[2] = GetSomething(GetResultFromUrl(CombineStr(syouKuPicUrlById, getIed)).Replace(@"\/", "/"), imgLinkRegxStr);
                    }
                }
            }
            #endregion

            #region else
            else
            { 
                //扩展其他情况：
            }
            #endregion

            return Result;
        }

给出优酷视频地址：

[csharp] view plain copy print ?

//根据视频地址提供的唯一id，请求出缩略图所在地址
string syouKuPicUrlById = "http://v.youku.com/player/getPlayList/VideoIDS/{0}/version/5/source/out?onData=%5Btype%20Function%5D&n=3";
public override string[] GetVideoInfo(string url)
{
Result[0] = Result[1] = url;
//http://player.youku.com/player.php/sid/XMzY3NzExNjgw/v.swf
//http://player.youku.com/player.php/Type/Folder/Fid/17213424/Ob/1/Pt/0/sid/XMzE2MzI5MDMy/v.swf
string videoId = GetVideoId(url,'/',1);
Result[2] = GetSomething(GetResultFromUrl(CombineStr(syouKuPicUrlById, videoId)).Replace(@"\/", "/"), imgLinkRegxStr);
return Result;
}

//根据视频地址提供的唯一id，请求出缩略图所在地址
        string syouKuPicUrlById = "http://v.youku.com/player/getPlayList/VideoIDS/{0}/version/5/source/out?onData=%5Btype%20Function%5D&n=3";
        public override string[] GetVideoInfo(string url)
        {
            Result[0] = Result[1] = url;
            
            //http://player.youku.com/player.php/sid/XMzY3NzExNjgw/v.swf
            //http://player.youku.com/player.php/Type/Folder/Fid/17213424/Ob/1/Pt/0/sid/XMzE2MzI5MDMy/v.swf
            string videoId = GetVideoId(url,'/',1);
            Result[2] = GetSomething(GetResultFromUrl(CombineStr(syouKuPicUrlById, videoId)).Replace(@"\/", "/"), imgLinkRegxStr);
            return Result;
           
        }

土豆视频

给出土豆网页地址：

[csharp] view plaincopyprint?
//一、输入视频网页(html页面)   
        //1.带.html(规则的网页)   
        static string htuDouThumUrl = "http://www.tudou.com/playlist/service/getPlaylists.html?lids={0}";//---根据lid查询缩略图地址  
        static string htuDouVideoUrlId = "http://v2.tudou.com/v?vn=02&st=1%2C2&it={0}";//-------根据lid查询视频地址需要的id  
        static string htuDouVideoUrlById = "http://www.tudou.com/l/{0}";//-------根据查出来的视频id拼出视频地址  
        //2.不带.html(不规则的网页)   
        static string htuDouContainUrl = "http://www.tudou.com/programs/view/";//-------------不规则的网页地址里面包含此内容  
        static string htuDouVideoUrlByKey = "http://www.tudou.com/v/{0}";//----------根据网页地址截取其中的视频唯一值key，获得视频地址  
      public override string[] GetVideoInfo(string url)  
      {  
          Result[0] = url;//网页地址   
          string lid = "";  
          //1.规则的网页地址：即带html后缀   
          if (url.ToLower().Contains(".html"))  
          {  
              string fileName = string.Empty;  
              if (url.IndexOf('?') > 0)  
              {  
                  fileName = System.IO.Path.GetFileName(url.Remove(url.IndexOf('?')));  
              }  
              else  
              {  
                  fileName = System.IO.Path.GetFileName(url);  
              }  
              fileName = fileName.Replace(".html", string.Empty);  
              int iindex = fileName.ToLower().IndexOf("i");  
              if (iindex < 0) iindex = fileName.Length - 1;  
              int lindex = fileName.ToLower().IndexOf("l");  
              if (lindex >= 0)  
              {  
                  lid = fileName.Substring(lindex + 1, iindex - lindex - 1);  
              }  
              else  
              {  
                  lid = "";  
              }  
              //获取视频地址   
  
              string vedioSl = GetSomething(GetResultFromUrl(CombineStr(htuDouVideoUrlId, lid)), "cd=\"[\\S]+\"");  
              if (vedioSl != "")  
              {  
                  Result[1] = CombineStr(htuDouVideoUrlById, vedioSl.Remove(0, 4).Replace("\"", ""));  
              }  
              else   
              {  
                  Result[1] = url;  
              }  
              //获取缩略图   
              string newurl = CombineStr(htuDouThumUrl, lid);  
              string picUrl = GetSomething(GetResultFromUrl(newurl).Replace(@"\/", "/"), "http://([\\w]+[./]*)+");  
              //if (System.IO.Path.GetFileNameWithoutExtension(picUrl).ToLower() == "p")   
              //{   
              if (picUrl != "")  
              {  
                  Result[2] = picUrl.Replace(System.IO.Path.GetFileName(picUrl), string.Empty) + "w" + System.IO.Path.GetExtension(picUrl);  
              }  
              else   
              {  
                  Result[2] = "服务器没有该视频的缩略图";  
              }  
              //}   
              //else   
              //{   
              //    Result[2] = "";   
              //}   
          }  
          else if (url.ToLower().StartsWith(htuDouContainUrl))  
          {  
              int paIndex = url.IndexOf('?');  
              string[] directs = url.Remove(paIndex > 0 ? paIndex : url.Length - 1).Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);  
              string param = string.Empty;//获取地址中的id比如获取http://www.tudou.com/programs/view/uuxZVpkDtUw/?union_id=100493_100001_02_01中uuxZVpkDtUw   
              if (directs.Length > 0)  
                  param = directs[directs.Length - 1];  
              //-----------------------------------得到视频地址---------------------------------   
              Result[1] = CombineStr(htuDouVideoUrlByKey, param);  
              //接下来得到缩略图，调用方法获取视频缩略图   
              TuDouSwf ts = new TuDouSwf();  
                
              Result[2]=ts.GetVideoInfo(CombineStr(htuDouVideoUrlByKey, param))[2];  
          }  
          else //其他情况   
          {  
            //   
          }  
          return Result;  
      }  
//一、输入视频网页(html页面)
        //1.带.html(规则的网页)
        static string htuDouThumUrl = "http://www.tudou.com/playlist/service/getPlaylists.html?lids={0}";//---根据lid查询缩略图地址
        static string htuDouVideoUrlId = "http://v2.tudou.com/v?vn=02&st=1%2C2&it={0}";//-------根据lid查询视频地址需要的id
        static string htuDouVideoUrlById = "http://www.tudou.com/l/{0}";//-------根据查出来的视频id拼出视频地址
        //2.不带.html(不规则的网页)
        static string htuDouContainUrl = "http://www.tudou.com/programs/view/";//-------------不规则的网页地址里面包含此内容
        static string htuDouVideoUrlByKey = "http://www.tudou.com/v/{0}";//----------根据网页地址截取其中的视频唯一值key，获得视频地址
      public override string[] GetVideoInfo(string url)
      {
          Result[0] = url;//网页地址
          string lid = "";
          //1.规则的网页地址：即带html后缀
          if (url.ToLower().Contains(".html"))
          {
              string fileName = string.Empty;
              if (url.IndexOf('?') > 0)
              {
                  fileName = System.IO.Path.GetFileName(url.Remove(url.IndexOf('?')));
              }
              else
              {
                  fileName = System.IO.Path.GetFileName(url);
              }
              fileName = fileName.Replace(".html", string.Empty);
              int iindex = fileName.ToLower().IndexOf("i");
              if (iindex < 0) iindex = fileName.Length - 1;
              int lindex = fileName.ToLower().IndexOf("l");
              if (lindex >= 0)
              {
                  lid = fileName.Substring(lindex + 1, iindex - lindex - 1);
              }
              else
              {
                  lid = "";
              }
              //获取视频地址

              string vedioSl = GetSomething(GetResultFromUrl(CombineStr(htuDouVideoUrlId, lid)), "cd=\"[\\S]+\"");
              if (vedioSl != "")
              {
                  Result[1] = CombineStr(htuDouVideoUrlById, vedioSl.Remove(0, 4).Replace("\"", ""));
              }
              else 
              {
                  Result[1] = url;
              }
              //获取缩略图
              string newurl = CombineStr(htuDouThumUrl, lid);
              string picUrl = GetSomething(GetResultFromUrl(newurl).Replace(@"\/", "/"), "http://([\\w]+[./]*)+");
              //if (System.IO.Path.GetFileNameWithoutExtension(picUrl).ToLower() == "p")
              //{
              if (picUrl != "")
              {
                  Result[2] = picUrl.Replace(System.IO.Path.GetFileName(picUrl), string.Empty) + "w" + System.IO.Path.GetExtension(picUrl);
              }
              else 
              {
                  Result[2] = "服务器没有该视频的缩略图";
              }
              //}
              //else
              //{
              //    Result[2] = "";
              //}
          }
          else if (url.ToLower().StartsWith(htuDouContainUrl))
          {
              int paIndex = url.IndexOf('?');
              string[] directs = url.Remove(paIndex > 0 ? paIndex : url.Length - 1).Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
              string param = string.Empty;//获取地址中的id比如获取http://www.tudou.com/programs/view/uuxZVpkDtUw/?union_id=100493_100001_02_01中uuxZVpkDtUw
              if (directs.Length > 0)
                  param = directs[directs.Length - 1];
              //-----------------------------------得到视频地址---------------------------------
              Result[1] = CombineStr(htuDouVideoUrlByKey, param);
              //接下来得到缩略图，调用方法获取视频缩略图
              TuDouSwf ts = new TuDouSwf();
              
              Result[2]=ts.GetVideoInfo(CombineStr(htuDouVideoUrlByKey, param))[2];
          }
          else //其他情况
          {
            //
          }
          return Result;
      }

给出土豆视频地址：

[csharp] view plaincopyprint?
//二、输入视频地址(不带.swf)   
       //1.根据视频地址请求的地址中含有lid，不含snap_pic图片地址   
       static string stuDouThumUrl = "http://www.tudou.com/playlist/service/getPlaylists.html?lids={0}";//-------------如果传入路径中包含lid，根据截取出的lid得到缩略图地址  
       static string stuDouHtmlUrl1 = "http://www.tudou.com/playlist/p/l{0}.html";//----根据视频lid值得到视频的网页地址  
       //2.根据视频地址请求的地址中不含lid，含有snap_pic图片地址   
       static string stuDouRemove = "http://www.tudou.com/v/";//----截取视频唯一值时用到的一段  
       static string stuDouHtmlUrl2 = "http://www.tudou.com/programs/view/{0}/";//------根据传入的视频地址截取唯一值拼出网页地址  
       
      public override string[] GetVideoInfo(string url)  
       {  
           Result[1] = url;//视频地址   
           string mc = GetParamFromUrl(url);  
           string[] str = mc.Split('&');  
           string strlid = "";//获取路径中的lid   
           string snap_pic = "";//获取缩略图路径   
           foreach (var item in str)  
           {  
               if (item.Contains("lid="))   
               {  
                   if (item.StartsWith("lid="))   
                   {  
                       strlid = item.ToString();  
                   }  
               }  
               else if (item.Contains("snap_pic="))   
               {  
                   if (item.StartsWith("snap_pic="))   
                   {  
                       snap_pic = item.ToString();  
                   }  
               }  
           }  
  
           //两种获取缩略图的方式：   
           //1.含有lid的   
           if (strlid != "")  
           {  
               string newurl = CombineStr(stuDouThumUrl, strlid.Replace("lid=", ""));  
               Result[0] = CombineStr(stuDouHtmlUrl1, strlid.Replace("lid=", ""));  
               string picUrl = GetSomething(GetResultFromUrl(newurl).Replace(@"\/", "/"), "http://([\\w]+[./]*)+");  
               Result[2] = picUrl.Replace(System.IO.Path.GetFileName(picUrl), string.Empty) + "w" + System.IO.Path.GetExtension(picUrl);  
                 
           }  
               //2.不含lid，含有缩略图路径   
           else if(snap_pic!="")  
           {  
               string uml = url.Replace(stuDouRemove,"");  
               if (uml.IndexOf("/") > 0)   
               {  
                   uml = uml.Remove(uml.IndexOf("/"));  
               }  
               Result[0] = CombineStr(stuDouHtmlUrl2,uml);  
                
               Result[2] = System.Web.HttpContext.Current.Server.UrlDecode(snap_pic.Replace("snap_pic=",""));  
  
           }  
  
           return Result;  
       }

posted on 2012-06-07 14:43 旋风阅读(690) 评论(0) 收藏举报

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