tomcat重新加载项目时报异常

2014-08-05 11:52:17 548 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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八月 05, 2014 11:19:26 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc

警告: The web application [/base] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.

八月 05, 2014 11:19:26 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads

警告: The web application [/base] appears to have started a thread named [MySQL Statement Cancellation Timer] 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.Object.wait(Object.java:502)

 java.util.TimerThread.mainLoop(Timer.java:526)

 java.util.TimerThread.run(Timer.java:505)

八月 05, 2014 11:19:26 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads

警告: The web application [/base] appears to have started a thread named [__DEFAULT__] 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)

八月 05, 2014 11:19:26 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads

警告: The web application [/base] appears to have started a thread named [org%002ehibernate%002ecache%002e%0053tandard%0051uery%0043ache.data] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:

 sun.misc.Unsafe.park(Native Method)

 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)

 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)

 java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)

 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)

 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

 java.lang.Thread.run(Thread.java:745)

八月 05, 2014 11:19:26 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads

警告: The web application [/base] appears to have started a thread named [Statistics Thread-__DEFAULT__-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:

 sun.misc.Unsafe.park(Native Method)

 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)

 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)

 java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)

 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)

 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

 java.lang.Thread.run(Thread.java:745)

八月 05, 2014 11:19:26 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads

警告: The web application [/base] appears to have started a thread named [org%002ehibernate%002ecache%002e%0055pdate%0054imestamps%0043ache.data] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:

 sun.misc.Unsafe.park(Native Method)

 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)

 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)

 java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)

 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)

 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

 java.lang.Thread.run(Thread.java:745)

八月 05, 2014 11:19:26 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads

警告: The web application [/base] appears to have started a thread named [com%002ebase%002eentity%002e%0055ser.data] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:

 sun.misc.Unsafe.park(Native Method)

 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)

 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)

 java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)

 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)

 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

 java.lang.Thread.run(Thread.java:745)

八月 05, 2014 11:19:26 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads

警告: The web application [/base] appears to have started a thread named [com%002ebase%002eentity%002e%0052ole.data] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:

 sun.misc.Unsafe.park(Native Method)

 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)

 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)

 java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)

 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)

 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

 java.lang.Thread.run(Thread.java:745)

八月 05, 2014 11:19:26 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads

警告: The web application [/base] appears to have started a thread named [org%002ehibernate%002ecache%002espi%002e%0055pdate%0054imestamps%0043ache.data] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:

 sun.misc.Unsafe.park(Native Method)

 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)

 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)

 java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)

 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)

 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

 java.lang.Thread.run(Thread.java:745)

八月 05, 2014 11:19:26 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads

警告: The web application [/base] appears to have started a thread named [org%002ehibernate%002ecache%002einternal%002e%0053tandard%0051uery%0043ache.data] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:

 sun.misc.Unsafe.park(Native Method)

 java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)

 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)

 java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)

 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)

 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

 java.lang.Thread.run(Thread.java:745)

八月 05, 2014 11:19:26 上午 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks

严重: The web application [/base] created a ThreadLocal with key of type [net.sf.json.AbstractJSON.CycleSet] (value [net.sf.json.AbstractJSON$CycleSet@574fc56b]) and a value of type [java.lang.ref.SoftReference] (value [java.lang.ref.SoftReference@1d63c98b]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.

以上为异常信息,这是什么原因导致的? 如何解决..谢谢

搞了一上午了

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切换为时间正序

S117 2014-08-05

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看你的代码，哪里起线程了

wangqiao4j 2014-08-05

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可以试试先清空tomcat缓存，然后重新启动试试。

痴傻二呆萌 2014-08-05

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引用 2 楼 longtian1213 的回复:

看你的代码，哪里起线程了

public class EntityManagerHelper { private static final EntityManagerFactory emf; private static final ThreadLocal<EntityManager> threadLocal; private static final Logger logger; static { emf = Persistence.createEntityManagerFactory("myJPA"); threadLocal = new ThreadLocal<EntityManager>(); logger = Logger.getLogger("myJPA"); logger.setLevel(Level.ALL); } /** * 通过threadLocal 获得EntityManager 对象 * * @return EntityManager 对象 */ public static EntityManager getEntityManager() { EntityManager manager = threadLocal.get(); if (manager == null || !manager.isOpen()) { manager = emf.createEntityManager(); threadLocal.set(manager); } return manager; } /** * 关闭EntityManager对象 */ public static void closeEntityManager() { EntityManager em = threadLocal.get(); threadLocal.set(null); if (em != null && em.isOpen()) { em.close(); } } /** * 开启事物 */ public static void beginTransaction() { getEntityManager().getTransaction().begin(); } /** * 事务提交 */ public static void commit() { getEntityManager().getTransaction().commit(); } /** * 事务回滚 */ public static void rollback() { getEntityManager().getTransaction().rollback(); } /** * 获得Query对象 * @param query * @return */ public static Query createQuery(String query) { return getEntityManager().createQuery(query); } } 这是EntityManagerHelper的代码这里使用了ThreadLocal

痴傻二呆萌 2014-08-05