URL url1 = new URL("http://localhost:8080/COEE/audio/underdog.wav");
AudioStream as = new AudioStream(url1.openStream());
// Create an AudioStream object from the input stream.
// AudioStream as = new AudioStream(in);
// Use the static class member "player" from class AudioPlayer to play
// clip.
AudioPlayer.player.start(as);
当我在本地计算机(Windows 计算机)上玩时，它工作正常。当在Rack Space(云计算)上运行相同的代码时，其中打开jdk6，tomcat，ubuntu就在那里。我认为我们在云计算方面没有健全的驱动程序。我们是否需要云计算中的声音驱动程序才能使用上述代码？我在 jsf 页面中使用上面的代码。当我单击按钮时，它会转到上面的代码并执行它。
javax.faces.FacesException: #{popup.captchaSpeech}: java.lang.NoClassDefFoundError: Could not initialize class org.classpath.icedtea.pulseaudio.EventLoop
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:90)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
com.icesoft.faces.webapp.http.core.JsfLifecycleExecutor.apply(JsfLifecycleExecutor.java:18)
com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.renderCycle(ReceiveSendUpdates.java:132)
com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.service(ReceiveSendUpdates.java:74)
com.icesoft.faces.webapp.http.core.RequestVerifier.service(RequestVerifier.java:31)
com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer.service(PathDispatcherServer.java:24)
com.icesoft.faces.webapp.http.servlet.BasicAdaptingServlet.service(BasicAdaptingServlet.java:16)
com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:53)
com.icesoft.faces.webapp.http.servlet.SessionVerifier.service(SessionVerifier.java:26)
com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:131)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
com.icesoft.faces.webapp.xmlhttp.BlockingServlet.service(BlockingServlet.java:56)
root cause
javax.faces.FacesException: #{popup.captchaSpeech}: java.lang.NoClassDefFoundError: Could not initialize class org.classpath.icedtea.pulseaudio.EventLoop
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
javax.faces.component.UICommand.broadcast(UICommand.java:387)
javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:475)
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:756)
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
com.icesoft.faces.webapp.http.core.JsfLifecycleExecutor.apply(JsfLifecycleExecutor.java:18)
com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.renderCycle(ReceiveSendUpdates.java:132)
com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.service(ReceiveSendUpdates.java:74)
com.icesoft.faces.webapp.http.core.RequestVerifier.service(RequestVerifier.java:31)
com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer.service(PathDispatcherServer.java:24)
com.icesoft.faces.webapp.http.servlet.BasicAdaptingServlet.service(BasicAdaptingServlet.java:16)
com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:53)
com.icesoft.faces.webapp.http.servlet.SessionVerifier.service(SessionVerifier.java:26)
com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:131)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
com.icesoft.faces.webapp.xmlhttp.BlockingServlet.service(BlockingServlet.java:56)
root cause
javax.faces.el.EvaluationException: java.lang.NoClassDefFoundError: Could not initialize class org.classpath.icedtea.pulseaudio.EventLoop
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
javax.faces.component.UICommand.broadcast(UICommand.java:387)
javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:475)
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:756)
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
com.icesoft.faces.webapp.http.core.JsfLifecycleExecutor.apply(JsfLifecycleExecutor.java:18)
com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.renderCycle(ReceiveSendUpdates.java:132)
com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.service(ReceiveSendUpdates.java:74)
com.icesoft.faces.webapp.http.core.RequestVerifier.service(RequestVerifier.java:31)
com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer.service(PathDispatcherServer.java:24)
com.icesoft.faces.webapp.http.servlet.BasicAdaptingServlet.service(BasicAdaptingServlet.java:16)
com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:53)
com.icesoft.faces.webapp.http.servlet.SessionVerifier.service(SessionVerifier.java:26)
com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:131)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
com.icesoft.faces.webapp.xmlhttp.BlockingServlet.service(BlockingServlet.java:56)
root cause
java.lang.NoClassDefFoundError: Could not initialize class org.classpath.icedtea.pulseaudio.EventLoop
org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:654)
org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:90)
com.sun.media.sound.DataPusher.start(DataPusher.java:99)
com.sun.media.sound.DataPusher.start(DataPusher.java:83)
sun.audio.AudioDevice.startSampled(AudioDevice.java:122)
sun.audio.AudioDevice.openChannel(AudioDevice.java:194)
sun.audio.AudioPlayer.start(AudioPlayer.java:140)
com.highmark.coee.managedbean.PopupBean.captchaSpeech(PopupBean.java:404)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:616)
org.apache.el.parser.AstValue.invoke(AstValue.java:172)
org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
javax.faces.component.UICommand.broadcast(UICommand.java:387)
javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:475)
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:756)
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
com.icesoft.faces.webapp.http.core.JsfLifecycleExecutor.apply(JsfLifecycleExecutor.java:18)
com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.renderCycle(ReceiveSendUpdates.java:132)
com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.service(ReceiveSendUpdates.java:74)
com.icesoft.faces.webapp.http.core.RequestVerifier.service(RequestVerifier.java:31)
com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer.service(PathDispatcherServer.java:24)
com.icesoft.faces.webapp.http.servlet.BasicAdaptingServlet.service(BasicAdaptingServlet.java:16)
com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:53)
com.icesoft.faces.webapp.http.servlet.SessionVerifier.service(SessionVerifier.java:26)
com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:131)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
com.icesoft.faces.webapp.xmlhttp.BlockingServlet.service(BlockingServlet.java:56)a
最佳答案
这里对“服务器端”和“客户端”存在一个重大误解。
AudioPlayer.player.start(as);
这会在执行这段代码的机器上运行声音。因此，网络服务器。在您的本地开发环境中，网络浏览器和网络服务器在物理上运行在同一台计算机上，因此看起来就像您的网络浏览器正在播放声音一样。但这不是真的，这是网络服务器做的!现在，当您将 Web 应用程序发布到云中时，云服务器会在您执行该应用程序时播放声音。
您想在网络浏览器中播放声音。您可以使用 HTML <embed>或<object>为了这。另请参阅this tutorial/reference 。以下是经过修改以适合您的 WAV 文件位置的相关摘录:
<object classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95">
<param name="FileName" value="/COEE/audio/underdog.wav" />
</object>
关于java声音在jsf页面中播放，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/5274645/