命令：jstack -l pid

如果有线程有死锁，则如下显示：

“IdleRemover” daemon prio=10 tid=0x00007f6b2c148800 nid=0x11d7 waiting on condition [0x00007f6b222e1000]

java.lang.Thread.State: TIMED_WAITING (parking)

at sun.misc.Unsafe.park(Native Method)

– parking to wait for  <0x0000000766888158> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)

at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226)

at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2176)

at org.jboss.jca.core.connectionmanager.pool.idle.IdleRemover$IdleRemoverRunner.run(IdleRemover.java:261)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)

at java.lang.Thread.r