有时，当使用"视频"；组件：
May 24, 2021 1:20:32 PM com.vaadin.server.DefaultErrorHandler doDefault
SEVERE:
org.eclipse.jetty.io.EofException
at org.eclipse.jetty.io.ChannelEndPoint.flush(ChannelEndPoint.java:284)
at org.eclipse.jetty.io.WriteFlusher.flush(WriteFlusher.java:393)
at org.eclipse.jetty.io.WriteFlusher.completeWrite(WriteFlusher.java:349)
at org.eclipse.jetty.io.ChannelEndPoint$3.run(ChannelEndPoint.java:132)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:295)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: An established connection was aborted by the software in your host machine
at sun.nio.ch.SocketDispatcher.write0(Native Method)
at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:51)
at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
at sun.nio.ch.IOUtil.write(IOUtil.java:65)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471)
at org.eclipse.jetty.io.ChannelEndPoint.flush(ChannelEndPoint.java:262)
... 11 more
Tomcat下似乎也发生了类似的错误，但它有更多直接与Vaadin相关的信息。由于Jetty提供的信息稀少，我无法证明它们是相同的错误，但它们确实发生在类似的情况下。
[2021-05-24 13:39:15 EDT] INFO org.apache.catalina.core.StandardWrapperValve invoke [2021-05-24 13:39:15 EDT] SEVERE com.mobiwms.website.WmsUI$1 error Uncaught exception
org.apache.catalina.connector.ClientAbortException: java.io.IOException: Broken pipe
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:356)
at org.apache.catalina.connector.OutputBuffer.appendByteArray(OutputBuffer.java:795)
at org.apache.catalina.connector.OutputBuffer.append(OutputBuffer.java:724)
at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:391)
at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:369)
at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:96)
at com.vaadin.server.DownloadStream.writeResponse(DownloadStream.java:307)
at com.vaadin.ui.AbstractMedia.handleConnectorRequest(AbstractMedia.java:129)
at com.vaadin.server.ConnectorResourceHandler.handleRequest(ConnectorResourceHandler.java:90)
at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1435)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:380)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:185)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: Broken pipe
at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)
at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
at sun.nio.ch.IOUtil.write(IOUtil.java:65)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471)
at org.apache.tomcat.util.net.SecureNioChannel.flush(SecureNioChannel.java:144)
at org.apache.tomcat.util.net.SecureNioChannel.write(SecureNioChannel.java:654)
at org.apache.tomcat.util.net.NioBlockingSelector.write(NioBlockingSelector.java:101)
at org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:157)
at org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper.doWrite(NioEndpoint.java:1306)
at org.apache.tomcat.util.net.SocketWrapperBase.doWrite(SocketWrapperBase.java:726)
at org.apache.tomcat.util.net.SocketWrapperBase.writeBlocking(SocketWrapperBase.java:496)
at org.apache.tomcat.util.net.SocketWrapperBase.write(SocketWrapperBase.java:434)
at org.apache.coyote.http11.Http11OutputBuffer$SocketOutputBuffer.doWrite(Http11OutputBuffer.java:623)
at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:116)
at org.apache.coyote.http11.Http11OutputBuffer.doWrite(Http11OutputBuffer.java:225)
at org.apache.coyote.Response.doWrite(Response.java:541)
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:351)
... 34 more
如何防止出现此问题？如果我知道在try...catch中包装什么，我会这么做，但我不完全确定包装什么。这是非常随机的。我知道如果我连续多次打开和关闭视频，我可以很快触发它。从我在网上看到的情况来看，这可能与一些超时有关，但随机性让我感到困惑。有时我没有得到错误，有时我得到了，无论自动播放是打开还是关闭。我看不到可靠的模式。
当服务器向浏览器写入文件(此处为视频流(时，连接断开时会发生异常。显然浏览器并没有正常关闭或代理断开连接。
我真的不喜欢这个答案，但它似乎有助于缓解这种情况。如果人们有更好的解决方案，请告诉我。无论如何，基本上，由于handleConnectorRequest注意到了这个问题，我认为我可以通过忽略异常来绕过错误。
helpVideo = new Video() {
@Override
public boolean handleConnectorRequest(VaadinRequest request, VaadinResponse response, String path)
throws IOException {
try {
return super.handleConnectorRequest(request, response, path);
} catch (IOException e) {
LOGGER.severe("Exception with video: " + e);
}
// This is not ideal, but we are sort of faking that things worked to get around other issues
return true;
}
};
是的，虽然完全合法，但这似乎是一个可怕的想法。但它是有效的，所以我为有同样问题的人提供了一个变通方法。