tomcat7 servlet中的内存泄漏

Question

我有一个在Tomcat7上运行的web应用程序的问题。

当我尝试重新启动web应用程序时，我在servlet内部创建的线程打开的端口仍然是打开的。

“http-bio-8080-acceptor-0”后台进程prio=10 tid=0x00007F4ED4206000 nid=0x71f0 runnable[0x00007F4ECC78F000]java.lang.thread.state：runnable at java.net.plainsockeTimpl.socketAccept（本机方法）at java.net.abstractplainsockeTimpl.java:398)at java.net.serversocket.implace(serversocket.java:530)at java.net.serversocket.accept（serversocket.java:498)at org.apache.tomcat.util.net.defaull tServerSocketFactory.AcceptSocket(DefaultServerSocketFactory.java:60)在org.apache.tomcat.util.net.jioEndpoint$Acceptor.Run(jioEndpoint.java:216)在java.lang.Thread.Run（Thread.java:745)

“ContainerBackgroundProcessor[StandardEngine[Tomcat]]”后台进程prio=10 tid=0x00007F4ED4205800 nid=0x71EF等待条件[0x00007F4ECC890000]java.lang.thread.state:TIMED_WAITING（睡眠）at java.lang.thread.sleep（本机方法）at org.apache.catalina.core.containerbase$ContainerBackgroundProcessor.run（containerbase.java:1508)at java.lang.thread.run（thread.java:745)

“Thread-4”后台进程prio=10 tid=0x00007F4EA00F6800 nid=0x71EE runnable[0x00007F4ECC991000]java.lang.thread.state：在java.net.abstractPlainSockeTimpl.SocketAccept（本机方法）在java.net.abstractPlainSockeTimpl.java:398)在java.net.ServerSocket.ImplAccept（ServerSocket.java:530)在java.net.ServerSocket.Accept（ServerSocket.java:498)在testProject.Server.Device.AcceptConnectionDaemon.Run（AcceptConnectionDA emon.java:39)在java.lang.Thread.Run（Thread.java:745)

“com.google.inject.internal.util.$finalizer”后台进程prio=10 tid=0x00007F4EA074D000 nid=0x71ed in object.wait（）[0x00007F4ECCA92000]java.lang.thread.state：等待（在对象监视器上）在java.lang.object.wait（本机方法）-等待<0x00000007EA2A9A18>（a java.lang.Ref.Referencequeue$lock)在java.lang.Ref.Referencequee.remove(referencequee.135)-锁定<0x00000007EA2A9A18>（a java.lang.Ref.Referencequee.$lock)lock）在java.lang.ref.referencequee.remove（referencequee.java:151)在com.google.inject.internal.util.$finalizer.run（finalizer.java:114)

“Thread-3”后台进程prio=10 tid=0x00007F4EA1A71800 nid=0x71EC runnable[0x00007F4ECCB93000]java.lang.thread.state：在sun.nio.ch.ePoll.ePollwait（本机方法）在sun.nio.ch.ePollport$EventHandlerTask.Poll（ePollport.java:194)在sun.nio.ch.ePollport$EventHandlerTask.Run（ePollport.java:268)在java.lang.thread.Run（thread.java:745)

“pool-1-thread-5”prio=10 tid=0x00007F4ED42FA000 nid=0x71E9等待条件[0x00007F4ECD41B000]java.lang.thread.state：等待（停车）在sun.misc.unsafe.park（本机方法）-停车等待<0x0000000785ed5558>（a java.util.concurrent.locks.abstractQueuedSynchronizer$conditionObject）在java.util.concurrent.locks.abstractQueuedSynchronizer$conditionObject）在java.util.concurrent.locks.abstractQueuedSynchronizer$conditionObject.java.186)在43）在java.util.concurrent.LinkedBlockingQueue.take（LinkedBlockingQueue.java:442)在java.util.concurrent.ThreadPoolExecutor.getTask（ThreadPoolExecutor.java:1068)在java.util.concurrent.ThreadPoolExecutor.runworker（ThreadPoolExecutor.java:1130)在java.util.concurrent.ThreadPoolExecutor$worker.run（ThreadPoolExecutor.java:615)在java.lang.Thread.run（Thread.java:745)

“Pool-1-Thread-4”prio=10 tid=0x00007F4ED4288800 nid=0x71E8等待条件[0x00007F4ECD51C000]java.lang.Thread.State：等待（停车）在sun.misc.unsafe.park（本机方法）-停车等待<0x0000000785ed5558>（a java.util.concurrent.Locks.AbstractQueuedSynchronizer$ConditionObject）在java.util.concurrent.Locks.AbstractQueuedSynchronizer$ConditionObject）在java.util.concurrent.Locks.AbstractQueuedSynchronizer$ConditionObject.java.186)在）在java.util.concurrent.LinkedBlockingQueue.take（LinkedBlockingQueue.java:442)在java.util.concurrent.ThreadPoolExecutor.getTask（ThreadPoolExecutor.java:1068)在java.util.concurrent.ThreadPoolExecutor.runworker（ThreadPoolExecutor.1130)在java.util.concurrent.ThreadPoolExecutor$worker.run（ThreadPoolExecutor.java:615)在java.lang.Thread.run（Thread.java:745)

“Pool-1-Thread-3”prio=10 tid=0x00007F4E90001800 nid=0x71E7等待条件[0x00007F4ECD61D000]java.lang.Thread.State：等待（停车）在sun.misc.unsafe.park（本机方法）-停车等待<0x0000000785ed5558>（a java.util.concurrent.Locks.AbstractQueuedSynchronizer$ConditionObject）在java.util.concurrent.Locks.AbstractQueuedSynchronizer$ConditionObject）在java.util.concurrent.Locks.AbstractQueuedSynchronizer$ConditionObject.java.186)在43）在java.util.concurrent.LinkedBlockingQueue.take（LinkedBlockingQueue.java:442)在java.util.concurrent.ThreadPoolExecutor.getTask（ThreadPoolExecutor.java:1068)在java.util.concurrent.ThreadPoolExecutor.runworker（ThreadPoolExecutor.java:1130)在java.util.concurrent.ThreadPoolExecutor$worker.run（ThreadPoolExecutor.java:615)在java.lang.Thread.run（Thread.java:745)

“Pool-1-Thread-2”prio=10 tid=0x00007F4ED42DE800 nid=0x71E6等待条件[0x00007F4ECD71E000]java.lang.Thread.State：等待（停车）在sun.misc.unsafe.park（本机方法）-停车等待<0x0000000785ed5558>（a java.util.concurrent.Locks.AbstractQueuedSynchronizer$ConditionObject）在java.util.concurrent.Locks.AbstractQueuedSynchronizer$ConditionObject）在java.util.concurrent.Locks.AbstractQueuedSynchronizer$ConditionObject.java.186)在）在java.util.concurrent.LinkedBlockingQueue.take（LinkedBlockingQueue.java:442)在java.util.concurrent.ThreadPoolExecutor.getTask（ThreadPoolExecutor.java:1068)在java.util.concurrent.ThreadPoolExecutor.runworker（ThreadPoolExecutor.1130)在java.util.concurrent.ThreadPoolExecutor$worker.run（ThreadPoolExecutor.java:615)在java.lang.Thread.run（Thread.java:745)

“pool-1-thread-1”prio=10 tid=0x00007F4ED42DD800 nid=0x71E5等待条件[0x00007F4ECD81F000]java.lang.thread.state：等待（停车）在sun.misc.unsafe.park（本机方法）-停车等待<0x0000000785ed5558>（a java.util.concurrent.locks.abstractQueuedSynchronizer$conditionObject）在java.util.concurrent.locks.abstractQueuedSynchronizer$conditionObject）在java.util.concurrent.locks.abstractQueuedSynchronizer$conditionObject.java.186)在）在java.util.concurrent.LinkedBlockingQueue.take（LinkedBlockingQueue.java:442)在java.util.concurrent.ThreadPoolExecutor.getTask（ThreadPoolExecutor.java:1068)在java.util.concurrent.ThreadPoolExecutor.runworker（ThreadPoolExecutor.1130)在java.util.concurrent.ThreadPoolExecutor$worker.run（ThreadPoolExecutor.java:615)在java.lang.Thread.run（Thread.java:745)

“Service Thread”后台进程prio=10 tid=0x00007F4ED40A7000 nid=0x71E1 runnable[0x0000000000000000000000]java.lang.Thread.State：runnable

“C2 CompilerThread1”后台进程prio=10 tid=0x00007F4ED40A4800 nid=0x71E0正在等待条件[0x0000000000000000000000]java.lang.Thread.State：可运行

“C2 CompilerThread0”后台进程prio=10 tid=0x00007F4ED40A2000 nid=0x71df正在等待条件[0x00000000000000000000]java.lang.Thread.State：可运行

“JDWP Event Helper Thread”后台进程prio=10 tid=0x00007F4ED409F800 NID=0x71DE runnable[0x000000000000000000]java.lang.Thread.State：runnable

“JDWP传输侦听器:DT_Socket”后台进程prio=10 tid=0x00007F4ED409C000 nid=0x71dd runnable[0x00000000000000000000]
java.lang.thread.state：runnable

“Signal Dispatcher”后台进程prio=10 tid=0x00007F4ED408F000 nid=0x71DC正在等待条件[0x0000000000000000000000]java.lang.Thread.State：可运行

“finalizer”后台进程prio=10 tid=0x00007F4ED406E800 nid=0x71db in object.wait（）[0x00007F4ECE6B5000]java.lang.thread.state：等待（在对象监视器上）在java.lang.object.wait（本机方法）-等待<0x0000000784CCD218>（a java.lang.ref.referencequeue$lock)在java.lang.ref.referencequee.remove（referencequee.135)-锁定<0x0000000784CCD218>（a java.lang.ref.referencequee.$lock)在java.lang.ref.referenceque.remove（reference）equeue.java:151)在java.lang.ref.finalizer$finalizerthread.run（finalizer.java:209)

“Reference Handler”后台进程prio=10 tid=0x00007F4ED406C800 nid=0x71da in object.wait()[0x00007F4ECE7B6000]java.lang.thread.state：等待（在对象监视器上）在java.lang.object.wait（本机方法）-等待<0x0000000784CCCD80>（a java.lang.ref.reference$lock)在java.lang.object.wait（object.java:503)在java.lang.ref.reference$referenceHandler.run（reference.java:133)-锁定<0x0000000784CCCD80>（a java.lang.ref.reference$lock)

“VM线程”Prio=10 TID=0x00007F4ED4068800 NID=0x71D9可运行

如果有任何帮助，我将不胜感激。

Answer 1

尝试在daemon类的主循环中检查Thread.IsInterrupted（）。如果它是真的，就中断循环，它应该允许Tomcat成功关闭线程。