如何解决如何在Java中使用vlcj?
大家好,我正在尝试为Java使用vlcj
,但遇到很多错误。我检查了我的jvm版本和vlc媒体版本都是64位。
我尝试了很多我在互联网上研究过的代码。我遵循此步骤,在代码中插入vlcj.jar,但似乎没有任何效果。
我遵循了caprica
上的教程,但无法正常工作。现在我出错了
Exception in thread "main" java.lang.IllegalArgumentException: Interface (LibVlc) of library=libvlc does not extend Library
B。
有人可以帮忙吗?
package mrbool.vlc.example;
import uk.co.caprica.vlcj.binding.LibVlc;
import uk.co.caprica.vlcj.factory.MediaPlayerFactory;
import uk.co.caprica.vlcj.player.embedded.EmbeddedMediaPlayer;
import uk.co.caprica.vlcj.binding.LibVlc;
import com.sun.jna.Native;
import com.sun.jna.NativeLibrary;
import uk.co.caprica.vlcj.binding.RuntimeUtil;
public class JavaApplication1 {
public static void main(String[] args) {
NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(),"C:\\Program Files\\VideoLAN\\VLC");
Native.loadLibrary(RuntimeUtil.getLibVlcLibraryName(),LibVlc.class);
MediaPlayerFactory factory = new MediaPlayerFactory();
}
}
解决方法
将vlc媒体播放器安装到项目所在的目录中
,有时问题是由于VLC和JRE的体系结构不兼容造成的。
您可以使用以下代码检查JRE体系结构:
public class JavaApplication12 {
public static void main(String[] args) {
System.out.println(System.getProperty("sun.arch.data.model"));
}
}
EmbeddedMediaPlayerComponent mediaPlayerComponent = new EmbeddedMediaPlayerComponent();
EmbeddedMediaPlayer embeddedMediaPlayer = mediaPlayerComponent.getMediaPlayer();
Canvas videoSurface = new Canvas();
videoSurface.setBackground(Color.black);
videoSurface.setSize(800,600);
List<String> vlcArgs = new ArrayList<String>();
vlcArgs.add("--no-plugins-cache");
vlcArgs.add("--no-video-title-show");
vlcArgs.add("--no-snapshot-preview");
MediaPlayerFactory mediaPlayerFactory = new MediaPlayerFactory(vlcArgs.toArray(new String[vlcArgs.size()]));
mediaPlayerFactory.setUserAgent("vlcj test player");
embeddedMediaPlayer.setVideoSurface(mediaPlayerFactory.newVideoSurface(videoSurface));
embeddedMediaPlayer.setPlaySubItems(true);
final PlayerControlsPanel controlsPanel = new PlayerControlsPanel(embeddedMediaPlayer);
PlayerVideoAdjustPanel videoAdjustPanel = new PlayerVideoAdjustPanel(embeddedMediaPlayer);
// mediaPlayerComponent.getMediaPlayer().playMedia(Constant.PATH_ROOT + Constant.PATH_MEDIA + "tmp.mp4");
JFrame mainFrame = new JFrame();
mainFrame.setLayout(new BorderLayout());
mainFrame.setBackground(Color.black);
mainFrame.add(videoSurface,BorderLayout.CENTER);
mainFrame.add(controlsPanel,BorderLayout.SOUTH);
mainFrame.add(videoAdjustPanel,BorderLayout.EAST);
//create a button which will hide the panel when clicked.
mainFrame.pack();
mainFrame.setVisible(true);
embeddedMediaPlayer.playMedia("tmp.mp4");
,
此外,我建议您自己使用chrome。您只需右键单击要刮取的任何内容,然后检查元素。它将带您到该元素位于html的确切位置。在这种情况下,您首先要找出所有结果列表的根目录在哪里。找到该元素时,您要指定元素,最好指定一个唯一的属性来搜索它。在这种情况下,根元素i
public class ScanWebSO
{
public static void main (String args[])
{
Document doc;
try{
doc = Jsoup.connect("https://www.google.com/search?as_q=&as_epq=%22Yorkshire+Capital%22+&as_oq=fraud+OR+allegations+OR+scam&as_eq=&as_nlo=&as_nhi=&lr=lang_en&cr=countryCA&as_qdr=all&as_sitesearch=&as_occt=any&safe=images&tbs=&as_filetype=&as_rights=").userAgent("Mozilla").ignoreHttpErrors(true).timeout(0).get();
Elements links = doc.select("li[class=g]");
for (Element link : links) {
Elements titles = link.select("h3[class=r]");
String title = titles.text();
Elements bodies = link.select("span[class=st]");
String body = bodies.text();
System.out.println("Title: "+title);
System.out.println("Body: "+body+"\n");
}
}
catch (IOException e) {
e.printStackTrace();
}
}
}
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