通过反编译得到 优酷视频 真实地址

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

public class Main
{

public static void main(String []a) throws Exception
{
  //目前只支持 地址 带有 v_show 的网页
  String htmlUrl = "http://v.youku.com/v_show/id_XMzgwMzQzNzM2.html";//视频页面地址 
  //截取 id f17333950o1p0
  String htmlUrlId = htmlUrl.substring(htmlUrl.lastIndexOf("/")+4, htmlUrl.length()-5);
  //取得返回的 json数据
  String json = Main.getInputHtml("http://v.youku.com/player/getPlayList/VideoIDS/"+htmlUrlId);
  
  
  
JSONObject jsobj = new JSONObject(json);
JSONArray jsonarr = jsobj.getJSONArray("data");
JSONObject obj1 = jsonarr.getJSONObject(0);
double seed = obj1.getDouble("seed");
JSONObject obj2 = obj1.getJSONObject("streamfileids");
String mp4id = null;
String flvid = null;
String format = null;
try
{
  mp4id = obj2.getString("mp4");
  format = "mp4";
} catch (JSONException e)
{
  System.out.println("没有MP4格式");
  try
  {
   flvid = obj2.getString("flv");
   format = "flv";
  } catch (JSONException e1)
  {
   System.out.println("没有FLV格式");
   return;
  }
}
// 
String realfileid = null;
if (format.equals("mp4"))
{
  realfileid = getFileID(mp4id, seed);
} else
{
  realfileid = getFileID(flvid, seed);
}
String idLeft = realfileid.substring(0, 8);
String idRight = realfileid.substring(10);
// 
String sid = genSid();
JSONObject obj3 = obj1.getJSONObject("segs");
JSONArray mp4arr = obj3.getJSONArray(format);
for (int i = 0; i < mp4arr.length(); i++)
{
  JSONObject o = mp4arr.getJSONObject(i);
  String k = o.getString("k");
  String url = "http://f.youku.com/player/getFlvPath/sid/" + sid + "_" + String.format("%1$02X", i) + "/st/" + format
    + "/fileid/" + idLeft + String.format("%1$02X", i) + idRight + "?K=" + k;
  System.out.println(url);
}

}

private static String getFileID(String fileid, double seed)
{
  String mixed = getFileIDMixString(seed);
  String[] ids = fileid.split("\\*");
  StringBuilder realId = new StringBuilder();
  int idx;
  for (int i = 0; i < ids.length; i++)
  {
   idx = Integer.parseInt(ids);
   realId.append(mixed.charAt(idx));
  }
  return realId.toString();
}

public static String genSid()
{
  int i1 = (int) (1000 + Math.floor(Math.random() * 999));
  int i2 = (int) (1000 + Math.floor(Math.random() * 9000));
  return System.currentTimeMillis() + "" + i1 + "" + i2;
}

private static String getFileIDMixString(double seed)
{
  StringBuilder mixed = new StringBuilder();
  StringBuilder source = new StringBuilder("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/\\:._-1234567890");
  int index, len = source.length();
  for (int i = 0; i < len; ++i)
  {
   seed = (seed * 211 + 30031) % 65536;
   index = (int) Math.floor(seed / 65536 * source.length());
   mixed.append(source.charAt(index));
   source.deleteCharAt(index);
  }
  return mixed.toString();
}
public static String getInputHtml(String urlStr)
{
  URL url = null;
  try
  {
   url = new URL(urlStr);
   HttpURLConnection httpsURLConnection = (HttpURLConnection) url.openConnection();
   httpsURLConnection.setRequestMethod("GET");
   httpsURLConnection.setConnectTimeout(5 * 1000);
   if (httpsURLConnection.getResponseCode() == 200) {
    // 通过输入流获取网络图片
    InputStream inputStream = httpsURLConnection.getInputStream();
    byte[] data = readInputStream(inputStream);
    inputStream.close();
    return new String(data, "UTF-8");
   }
   
  }
  catch (Exception e)
  {
   
   // TODO Auto-generated catch block
   e.printStackTrace();
   return null;
  }
  return null;
}
public static byte[] readInputStream(InputStream inputStream) throws Exception
{
  // 定义一个输出流向内存输出数据
  ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
  // 定义一个缓冲区
  byte[] buffer = new byte[1024];
  // 读取数据长度
  int len = 0;
  // 当取得完数据后会返回一个-1
  while ((len = inputStream.read(buffer)) != -1)
  {
   // 把缓冲区的数据 写到输出流里面
   byteArrayOutputStream.write(buffer, 0, len);
  }
  byteArrayOutputStream.close();
  // 得到数据后返回
  return byteArrayOutputStream.toByteArray();
}

}
结果