我试图在远程Ubuntu机器上部署SonarQube。我启动了服务器，状态信息是'SonarQube正在运行'。但几分钟后，服务器自动关闭。我有这个例外：
2016.11.08 16:41:53 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [ROOT] appears to have started a thread named [Abandoned connection cleanup thread] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:43)
2016.11.08 16:41:53 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [ROOT] appears to have started a thread named [Timer-0] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
java.util.TimerThread.mainLoop(Timer.java:552)
java.util.TimerThread.run(Timer.java:505)
2016.11.08 16:41:53 INFO web[][o.a.c.h.Http11NioProtocol] Starting ProtocolHandler ["http-nio-127.0.0.1-9000"]
2016.11.08 16:41:53 INFO web[][o.s.s.a.TomcatAccessLog] Web server is started
2016.11.08 16:41:53 INFO web[][o.s.s.a.EmbeddedTomcat] HTTP connector enabled on port 9000
2016.11.08 16:41:53 WARN web[][o.s.p.ProcessEntryPoint] Fail to start web
java.lang.IllegalStateException: Webapp did not start
at org.sonar.server.app.EmbeddedTomcat.isUp(EmbeddedTomcat.java:84) ~[sonar-server-6.1.jar:na]
at org.sonar.server.app.WebServer.isUp(WebServer.java:46) [sonar-server-6.1.jar:na]
at org.sonar.process.ProcessEntryPoint.launch(ProcessEntryPoint.java:105) ~[sonar-process-6.1.jar:na]
at org.sonar.server.app.WebServer.main(WebServer.java:67) [sonar-server-6.1.jar:na]
2016.11.08 16:41:53 INFO web[][o.a.c.h.Http11NioProtocol] Pausing ProtocolHandler ["http-nio-127.0.0.1-9000"]
2016.11.08 16:41:54 INFO web[][o.a.c.h.Http11NioProtocol] Stopping ProtocolHandler ["http-nio-127.0.0.1-9000"]
2016.11.08 16:41:54 INFO web[][o.a.c.h.Http11NioProtocol] Destroying ProtocolHandler ["http-nio-127.0.0.1-9000"]
2016.11.08 16:41:54 INFO web[][o.s.s.a.TomcatAccessLog] Web server is stopped
2016.11.08 16:41:54 INFO app[][o.s.p.m.Monitor] Process[es] is stopping
2016.11.08 16:41:55 INFO es[][o.s.p.StopWatcher] Stopping process
2016.11.08 16:41:55 INFO es[][o.elasticsearch.node] [sonarqube] stopping ...
2016.11.08 16:41:55 INFO es[][o.elasticsearch.node] [sonarqube] stopped
2016.11.08 16:41:55 INFO es[][o.elasticsearch.node] [sonarqube] closing ...
2016.11.08 16:41:55 INFO es[][o.elasticsearch.node] [sonarqube] closed
以下是我的版本：
以下是完整日志
--> Wrapper Started as Daemon
Launching a JVM...
Wrapper (Version 3.2.3) http://wrapper.tanukisoftware.org
Copyright 1999-2006 Tanuki Software, Inc. All Rights Reserved.
WrapperSimpleApp: Unable to locate the class org.sonar.application.App: java.lang.UnsupportedClassVersionError: org/sonar/application/App : Unsupported major.minor version 52.0
WrapperSimpleApp Usage:
java org.tanukisoftware.wrapper.WrapperSimpleApp {app_class} [app_arguments]
Where:
app_class: The fully qualified class name of the application to run.
app_arguments: The arguments that would normally be passed to the
application.
<-- Wrapper Stopped
--> Wrapper Started as Daemon
Launching a JVM...
Wrapper (Version 3.2.3) http://wrapper.tanukisoftware.org
Copyright 1999-2006 Tanuki Software, Inc. All Rights Reserved.
WrapperSimpleApp: Unable to locate the class org.sonar.application.App: java.lang.UnsupportedClassVersionError: org/sonar/application/App : Unsupported major.minor version 52.0
WrapperSimpleApp Usage:
java org.tanukisoftware.wrapper.WrapperSimpleApp {app_class} [app_arguments]
Where:
app_class: The fully qualified class name of the application to run.
app_arguments: The arguments that would normally be passed to the
application.
<-- Wrapper Stopped
--> Wrapper Started as Daemon
Launching a JVM...
Wrapper (Version 3.2.3) http://wrapper.tanukisoftware.org
Copyright 1999-2006 Tanuki Software, Inc. All Rights Reserved.
WrapperSimpleApp: Unable to locate the class org.sonar.application.App: java.lang.UnsupportedClassVersionError: org/sonar/application/App : Unsupported major.minor version 52.0
"sonar.log" 21127L, 1883274C 1,1 Top
java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)
2016.11.08 21:14:58 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [ROOT] appears to have started a thread named [Abandoned connection cleanup thread] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:43)
2016.11.08 21:14:58 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [ROOT] appears to have started a thread named [Timer-0] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
java.util.TimerThread.mainLoop(Timer.java:552)
java.util.TimerThread.run(Timer.java:505)
2016.11.08 21:14:58 INFO web[][o.a.c.h.Http11NioProtocol] Starting ProtocolHandler ["http-nio-127.0.0.1-9000"]
2016.11.08 21:14:58 INFO web[][o.s.s.a.TomcatAccessLog] Web server is started
2016.11.08 21:14:58 INFO web[][o.s.s.a.EmbeddedTomcat] HTTP connector enabled on port 9000
2016.11.08 21:14:58 WARN web[][o.s.p.ProcessEntryPoint] Fail to start web
java.lang.IllegalStateException: Webapp did not start
at org.sonar.server.app.EmbeddedTomcat.isUp(EmbeddedTomcat.java:84) ~[sonar-server-6.1.jar:na]
at org.sonar.server.app.WebServer.isUp(WebServer.java:46) [sonar-server-6.1.jar:na]
at org.sonar.process.ProcessEntryPoint.launch(ProcessEntryPoint.java:105) ~[sonar-process-6.1.jar:na]
at org.sonar.server.app.WebServer.main(WebServer.java:67) [sonar-server-6.1.jar:na]
2016.11.08 21:14:58 INFO web[][o.a.c.h.Http11NioProtocol] Pausing ProtocolHandler ["http-nio-127.0.0.1-9000"]
2016.11.08 21:14:59 INFO web[][o.a.c.h.Http11NioProtocol] Stopping ProtocolHandler ["http-nio-127.0.0.1-9000"]
2016.11.08 21:14:59 INFO web[][o.a.c.h.Http11NioProtocol] Destroying ProtocolHandler ["http-nio-127.0.0.1-9000"]
2016.11.08 21:14:59 INFO web[][o.s.s.a.TomcatAccessLog] Web server is stopped
2016.11.08 21:14:59 INFO app[][o.s.p.m.Monitor] Process[es] is stopping
2016.11.08 21:15:00 INFO es[][o.s.p.StopWatcher] Stopping process
2016.11.08 21:15:00 INFO es[][o.elasticsearch.node] [sonarqube] stopping ...
2016.11.08 21:15:00 INFO es[][o.elasticsearch.node] [sonarqube] stopped
2016.11.08 21:15:00 INFO es[][o.elasticsearch.node] [sonarqube] closing ...
2016.11.08 21:15:00 INFO es[][o.elasticsearch.node] [sonarqube] closed
2016.11.08 21:15:00 INFO app[][o.s.p.m.Monitor] Process[es] is stopped
答案 0 :(得分：1)
The famous message "Unsupported major.minor version 52.0" means that Java 8 is not being used whereas it is required.
You should check that JDK 1.8.0_111 is in PATH. If not, an alternative is to edit the property wrapper.java.command in conf/wrapper.conf.