Question

我想创建一个播放shoutcast流的程序。我从here复制此代码，我发现以下错误消息。我使用BasicPlayer库，如果您有任何其他库建议，它对我非常有帮助！

import java.net.MalformedURLException;
import java.net.URL;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import javazoom.jlgui.basicplayer.BasicController;
import javazoom.jlgui.basicplayer.BasicPlayer;
import javazoom.jlgui.basicplayer.BasicPlayerEvent;
import javazoom.jlgui.basicplayer.BasicPlayerException;
import javazoom.jlgui.basicplayer.BasicPlayerListener;

public class MP3Player implements BasicPlayerListener, Runnable {

    public String streamurl;
    public BasicController playerControl;
    private BasicPlayer player;
    private volatile boolean shouldPlay = true;

    @Override
    public void run() {
        while (true) {
            if (shouldPlay) {
                player();
            }
        }
    }

    public void start() {
        new Thread(this).start();
    }

    public void pause() {

        shouldPlay = false;

        try {
            playerControl.stop();
        } catch (BasicPlayerException ex) {
            Logger.getLogger(MP3Player.class.getName()).log(Level.SEVERE, null,
                    ex);
        }

    }

    public void play() {
        shouldPlay = true;
    }

    public MP3Player(String givenStreamurl) {
        streamurl = givenStreamurl;
    }

    public void player() {

        shouldPlay = false;
        player = new BasicPlayer();
        playerControl = (BasicController) player;
        player.addBasicPlayerListener(this);
        try {
            try {
                playerControl.open(new URL(streamurl));
            } catch (MalformedURLException ex) {
                System.out.println("aaa");
            }
            playerControl.play();
            playerControl.setGain(0.85);
            playerControl.setPan(0.0);
        } catch (BasicPlayerException ex) {
        }

    }
}

错误消息

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
    at javazoom.jlgui.basicplayer.BasicPlayer.<clinit>(Unknown Source)
    at MP3Player.player(MP3Player.java:57)
    at Main.main(Main.java:6)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 3 more

第57行

player = new BasicPlayer（）;

感谢名单！

Answer 1

由于例外显然是classnotfoundexception，这意味着它无法在类路径中找到类org.apache.commons.logging.LogFactory。

从commons-logging下载jar并将其放入类路径中。

java SHOUTcast：我在BasicPlayer上有错误

1 个答案: