Adobe Experience Manager 的 netdiagnostics Java 代理启动错误答案

【问题标题】：netdiagnostics Java agent startup error with Adobe Experience ManagerAdobe Experience Manager 的 netdiagnostics Java 代理启动错误
【发布时间】：2020-01-15 09:40:57
【问题描述】：

我们正在使用 Adobe Experience Manager，我需要通过 javaagent 对其进行监控（我们有专门的 java 应用程序监控工具，称为 netdiagnostics）。通常，为了启用监控，我只需要通过 javaagent 选项将 netdiagnostics 的参数传递给应用程序。但是在将 javaagent 选项传递给 Adobe Experience Manager 后，它没有启动，我在日志中看到错误：

su[16168]: 14.01.2020 08:31:05.615 *INFO * [Apache Sling Terminator] Java VM is shutting down
su[16168]: 14.01.2020 08:31:05.615 *INFO * [Apache Sling Terminator] Stopping Apache Sling
su[16168]: MAIN process: shutdown hook
su[16168]: MAIN process: exiting
su[16168]: Exception in thread "UnregisteringFilterThread for ServiceUnavailableFilter with tags [systemalive]" java.lang.NoClassDefFoundError: com/cavisson/ndutils/ThreadCallOutHandler
su[16168]: at org.apache.felix.hc.core.impl.filter.ServiceUnavailableFilter$UnregisteringFilterThread.run(ServiceUnavailableFilter.java)
su[16168]: Caused by: java.lang.ClassNotFoundException: com.cavisson.ndutils.ThreadCallOutHandler not found by org.apache.felix.healthcheck.core [579]
su[16168]: at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1597)
su[16168]: at org.apache.felix.framework.BundleWiringImpl.access$300(BundleWiringImpl.java:79)
su[16168]: at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1982)
su[16168]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
su[16168]: ... 1 more
su[16168]: 14.01.2020 08:31:33.418 *INFO * [Sling Notifier] Apache Sling has been stopped

此外，当我尝试检查 systemready 时，我收到下一个错误：

curl http://127.0.0.1:4502/systemready
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<title>Error 500 Server Error</title>
</head>
<body><h2>HTTP ERROR 500</h2>
<p>Problem accessing /systemready. Reason:
<pre>    Server Error</pre></p><h3>Caused by:</h3><pre>java.lang.NoClassDefFoundError: com/cavisson/ndutils/NDHttpCapture
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:671)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
    at org.apache.felix.http.base.internal.handler.ServletHandler.handle(ServletHandler.java:123)
    at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:86)
    at com.adobe.granite.license.impl.LicenseCheckFilter.doFilter(LicenseCheckFilter.java:308)
    at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:142)
    at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:81)
    at org.apache.sling.i18n.impl.I18NFilter.doFilter(I18NFilter.java:131)
    at org.apache.felix.http.base.internal.handler.FilterHandler.handle(FilterHandler.java:142)
    at org.apache.felix.http.base.internal.dispatch.InvocationChain.doFilter(InvocationChain.java:81)
    at org.apache.felix.http.base.internal.dispatch.Dispatcher$1.doFilter(Dispatcher.java:146)
    at org.apache.felix.http.base.internal.whiteboard.WhiteboardManager$2.doFilter(WhiteboardManager.java:1002)
    at org.apache.sling.security.impl.ReferrerFilter.doFilter(ReferrerFilter.java:326)
    at org.apache.felix.http.base.internal.handler.PreprocessorHandler.handle(PreprocessorHandler.java:136)
    at org.apache.felix.http.base.internal.whiteboard.WhiteboardManager$2.doFilter(WhiteboardManager.java:1008)
    at org.apache.felix.http.sslfilter.internal.SslFilter.doFilter(SslFilter.java:97)
    at org.apache.felix.http.base.internal.handler.PreprocessorHandler.handle(PreprocessorHandler.java:136)
    at org.apache.felix.http.base.internal.whiteboard.WhiteboardManager$2.doFilter(WhiteboardManager.java:1008)
    at org.apache.felix.http.base.internal.whiteboard.WhiteboardManager.invokePreprocessors(WhiteboardManager.java:1012)
    at org.apache.felix.http.base.internal.dispatch.Dispatcher.dispatch(Dispatcher.java:91)
    at org.apache.felix.http.base.internal.dispatch.DispatcherServlet.service(DispatcherServlet.java:49)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:873)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:542)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1701)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1668)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:220)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.eclipse.jetty.server.Server.handle(Server.java:502)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:370)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:267)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
    at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
    at org.eclipse.jetty.util.thread.ReservedThreadExecutor$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)
</pre>

</body>
</html>

我创建了一个类似的问题，但与另一个代理： https://discuss.elastic.co/t/apm-java-agent-startup-error-with-adobe-experience-manager/153451

正如那个问题中提到的，我试图通过命令行（“-Dsling.bootdelegation.com.cavisson=com.cavisson.*”）传递 sling.bootdelegation 参数，但没有运气。

此外，AEM 在没有 javaagent 选项的情况下成功启动...

【问题讨论】：

如果你修改sling.properties文件而不是通过命令行传递它，你会得到相同的结果吗？ (crx-quickstart/conf)
嗨@ronnyfm，是的，但没有运气 - 这个文件自动重新创建......我在某处读到 - 我需要将 netdiagnostics.jar 添加到 java 类路径，但我不知道如何正确这样做不会影响主应用程序...

标签： java aem javaagents

【解决方案1】：

在 sling.properties 中扩展属性“org.osgi.framework.bootdelegation”，如下所示：

org.osgi.framework.bootdelegation=com.cavisson.ndutils,com.cavisson.ndutils.*,com.yourkit.*, ${org.apache.sling.launcher.bootdelegation}

【讨论】：