Code pour télécharger la vidéo de Youtube sur Java, Android
J'ai créé du code pour télécharger des vidéos à partir de Youtube, mais ce code ne fonctionne pas avec une connexion Wi-Fi et fonctionne avec une connexion mobile. Où avais-je erreur?
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Enumeration;
import java.util.Vector;
import android.app.Activity;
import android.app.ProgressDialog;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.widget.MediaController;
import android.widget.VideoView;
public class MyActivity extends Activity {
private class ReceivingDataFromYoutube extends AsyncTask<String, Void, Void> {
private ProgressDialog dialog = new ProgressDialog(MyActivity.this);
private String result;
protected void onPreExecute() {
dialog.setMessage("Downloading...");
dialog.show();
}
@Override
protected Void doInBackground(String... arg0) {
int begin, end;
String tmpstr = null;
try {
URL url=new URL("http://www.youtube.com/watch?v=y12-1miZHLs&nomobile=1");
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("GET");
InputStream stream=con.getInputStream();
InputStreamReader reader=new InputStreamReader(stream);
StringBuffer buffer=new StringBuffer();
char[] buf=new char[262144];
int chars_read;
while ((chars_read = reader.read(buf, 0, 262144)) != -1) {
buffer.append(buf, 0, chars_read);
}
tmpstr=buffer.toString();
begin = tmpstr.indexOf("url_encoded_fmt_stream_map=");
end = tmpstr.indexOf("&", begin + 27);
if (end == -1) {
end = tmpstr.indexOf("\"", begin + 27);
}
tmpstr = UtilClass.URLDecode(tmpstr.substring(begin + 27, end));
} catch (MalformedURLException e) {
throw new RuntimeException();
} catch (IOException e) {
throw new RuntimeException();
}
Vector url_encoded_fmt_stream_map = new Vector();
begin = 0;
end = tmpstr.indexOf(",");
while (end != -1) {
url_encoded_fmt_stream_map.addElement(tmpstr.substring(begin, end));
begin = end + 1;
end = tmpstr.indexOf(",", begin);
}
url_encoded_fmt_stream_map.addElement(tmpstr.substring(begin, tmpstr.length()));
String result = "";
Enumeration url_encoded_fmt_stream_map_enum = url_encoded_fmt_stream_map.elements();
while (url_encoded_fmt_stream_map_enum.hasMoreElements()) {
tmpstr = (String)url_encoded_fmt_stream_map_enum.nextElement();
begin = tmpstr.indexOf("itag=");
if (begin != -1) {
end = tmpstr.indexOf("&", begin + 5);
if (end == -1) {
end = tmpstr.length();
}
int fmt = Integer.parseInt(tmpstr.substring(begin + 5, end));
if (fmt == 35) {
begin = tmpstr.indexOf("url=");
if (begin != -1) {
end = tmpstr.indexOf("&", begin + 4);
if (end == -1) {
end = tmpstr.length();
}
result = UtilClass.URLDecode(tmpstr.substring(begin + 4, end));
this.result=result;
break;
}
}
}
}
try {
URL u = new URL(result);
HttpURLConnection c = (HttpURLConnection) u.openConnection();
c.setRequestMethod("GET");
/* c.setRequestProperty("Youtubedl-no-compression", "True");
c.setRequestProperty("User-Agent", "YouTube");*/
c.setDoOutput(true);
c.connect();
FileOutputStream f=new FileOutputStream(new File("/sdcard/3.flv"));
InputStream in=c.getInputStream();
byte[] buffer=new byte[1024];
int sz = 0;
while ( (sz = in.read(buffer)) > 0 ) {
f.write(buffer,0, sz);
}
f.close();
} catch (MalformedURLException e) {
new RuntimeException();
} catch (IOException e) {
new RuntimeException();
}
return null;
}
protected void onPostExecute(Void unused) {
dialog.dismiss();
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
new ReceivingDataFromYoutube().execute();
}
}
2 answers
3 étapes:
Vérifiez le code sorce (HTML) de YouTube, vous obtiendrez le lien comme ceci (http%253A%252F%252Fo-o. preferred.telemar-cnf1.v18.lscache6.c.youtube.com%252Fvideoplayback...);
-
Décoder l'url (supprimer les codes %2B%25 etc), créer un décodeur avec les codes: http://www.w3schools.com/tags/ref_urlencode.asp et utiliser la fonction Uri.decode (url) pour remplacer les octets échappés non valides;
-
Utilisez le code pour télécharger flux:
URL u = null; InputStream is = null; try { u = new URL(url); is = u.openStream(); HttpURLConnection huc = (HttpURLConnection)u.openConnection(); //to know the size of video int size = huc.getContentLength(); if(huc != null) { String fileName = "FILE.mp4"; String storagePath = Environment.getExternalStorageDirectory().toString(); File f = new File(storagePath,fileName); FileOutputStream fos = new FileOutputStream(f); byte[] buffer = new byte[1024]; int len1 = 0; if(is != null) { while ((len1 = is.read(buffer)) > 0) { fos.write(buffer,0, len1); } } if(fos != null) { fos.close(); } } } catch (MalformedURLException mue) { mue.printStackTrace(); } catch (IOException ioe) { ioe.printStackTrace(); } finally { try { if(is != null) { is.close(); } } catch (IOException ioe) { // just going to ignore this one } }
C'est tout, la plupart des choses que vous trouverez sur le web!!!
MÉTHODE 1 ( Recommandé )
Bibliothèque YouTubeExtractor
Ajouter dans votre fichier gradle
allprojects {
repositories {
maven { url "https://jitpack.io" }
}
}
Et dépendances
compile 'com.github.Commit451.YouTubeExtractor:youtubeextractor:2.1.0'
Ajoutez ce petit code et vous avez terminé. Démo ICI
public class MainActivity extends AppCompatActivity {
private static final String YOUTUBE_ID = "ea4-5mrpGfE";
private final YouTubeExtractor mExtractor = YouTubeExtractor.create();
private Callback<YouTubeExtractionResult> mExtractionCallback = new Callback<YouTubeExtractionResult>() {
@Override
public void onResponse(Call<YouTubeExtractionResult> call, Response<YouTubeExtractionResult> response) {
bindVideoResult(response.body());
}
@Override
public void onFailure(Call<YouTubeExtractionResult> call, Throwable t) {
onError(t);
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// For android youtube extractor library com.github.Commit451.YouTubeExtractor:youtubeextractor:2.1.0'
mExtractor.extract(YOUTUBE_ID).enqueue(mExtractionCallback);
}
private void onError(Throwable t) {
t.printStackTrace();
Toast.makeText(MainActivity.this, "It failed to extract. So sad", Toast.LENGTH_SHORT).show();
}
private void bindVideoResult(YouTubeExtractionResult result) {
// Here you can get download url link
Log.d("OnSuccess", "Got a result with the best url: " + result.getBestAvailableQualityVideoUri());
Toast.makeText(this, "result : " + result.getSd360VideoUri(), Toast.LENGTH_SHORT).show();
}
}
Vous pouvez obtenir le lien de téléchargement dans la méthode bindVideoResult().
MÉTHODE 2
L'Utilisation de cette bibliothèque android-youtubeExtractor
Ajouter dans le fichier gradle
repositories {
maven { url "https://jitpack.io" }
}
compile 'com.github.HaarigerHarald:android-youtubeExtractor:master-SNAPSHOT'
Voici le code pour obtenir l'URL de téléchargement.
String youtubeLink = "http://youtube.com/watch?v=xxxx";
YouTubeUriExtractor ytEx = new YouTubeUriExtractor(this) {
@Override
public void onUrisAvailable(String videoId, String videoTitle, SparseArray<YtFile> ytFiles) {
if (ytFiles != null) {
int itag = 22;
// Here you can get download url
String downloadUrl = ytFiles.get(itag).getUrl();
}
}
};
ytEx.execute(youtubeLink);