如何使用JAVA代码以编程方式捕获线程转储？
我想通过java代码生成线程转储，我尝试使用ThreadMXBean，但我没有得到正确格式的线程转储，因为我们正在使用jstack命令。 请任何人提供一些帮助..是他们的任何其他方式来获取线程转储…使用任何其他API ..我想要的线程转储的格式是 –
2015-08-06 05:51:15 Full thread dump Java HotSpot(TM) 64-Bit Server VM (24.51-b03 mixed mode): "Attach Listener" daemon prio=10 tid=0x00007fdab805d800 nid=0x7a36 waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE "ajp-mco/127.168.121.120:8170-220" daemon prio=10 tid=0x00007fdaa056d000 nid=0x7961 runnable [0x00007fda8bb7a000] java.lang.Thread.State: RUNNABLE at java.net.SocketInputStream.socketRead0(Native Method) at java.net.SocketInputStream.read(SocketInputStream.java:152) at java.net.SocketInputStream.read(SocketInputStream.java:122) at org.apache.coyote.ajp.AjpProcessor.read(AjpProcessor.java:1114) at org.apache.coyote.ajp.AjpProcessor.readMessage(AjpProcessor.java:1196) at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:436) at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:420) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:920) at java.lang.Thread.run(Thread.java:744) 尝试使用类似的东西来ManagementFactory.getThreadMXBean().dumpAllThreads(true, true)
ThreadMXBean bean = ManagementFactory.getThreadMXBean(); ThreadInfo[] infos = bean.dumpAllThreads(true, true); for (ThreadInfo info : infos) { System.out.println(info); }
或者你可以通过Runtime.getRuntime.exec()实际调用jstack ：
String pid = ManagementFactory.getRuntimeMXBean().getName().replaceAll("[^\\d.]", ""); InputStream in = Runtime.getRuntime().exec(PATH_TO_JSTACK + " " + pid).getInputStream(); System.out.println(IOUtils.toString(InputStream));
这是使用示例程序的输出
ThreadMXBean ：
"pool-1-thread-4" Id=14 WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@2d98a335 at sun.misc.Unsafe.park(Native Method) - waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@2d98a335 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) "pool-1-thread-3" Id=13 WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@2d98a335 at sun.misc.Unsafe.park(Native Method) - waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@2d98a335 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) "pool-1-thread-2" Id=12 WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@2d98a335 at sun.misc.Unsafe.park(Native Method) - waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@2d98a335 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) "pool-1-thread-1" Id=11 WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@2d98a335 at sun.misc.Unsafe.park(Native Method) - waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@2d98a335 at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) "Monitor Ctrl-Break" Id=10 RUNNABLE (in native) at java.net.DualStackPlainSocketImpl.accept0(Native Method) at java.net.DualStackPlainSocketImpl.socketAccept(DualStackPlainSocketImpl.java:131) at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:409) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:199) - locked java.net.SocksSocketImpl@16b98e56 at java.net.ServerSocket.implAccept(ServerSocket.java:545) at java.net.ServerSocket.accept(ServerSocket.java:513) at com.intellij.rt.execution.application.AppMain$1.run(AppMain.java:90) at java.lang.Thread.run(Thread.java:745) "Attach Listener" Id=5 RUNNABLE "Signal Dispatcher" Id=4 RUNNABLE "Finalizer" Id=3 WAITING on java.lang.ref.ReferenceQueue$Lock@7ef20235 at java.lang.Object.wait(Native Method) - waiting on java.lang.ref.ReferenceQueue$Lock@7ef20235 at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164) at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209) "Reference Handler" Id=2 WAITING on java.lang.ref.Reference$Lock@27d6c5e0 at java.lang.Object.wait(Native Method) - waiting on java.lang.ref.Reference$Lock@27d6c5e0 at java.lang.Object.wait(Object.java:502) at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:157) "main" Id=1 RUNNABLE at sun.management.ThreadImpl.dumpThreads0(Native Method) at sun.management.ThreadImpl.dumpAllThreads(ThreadImpl.java:446) at Playground.main(Playground.java:25) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
jstack （通过控制台或通过Runtime.getRuntime().exec() ）：
Full thread dump Java HotSpot(TM) 64-Bit Server VM (25.65-b01 mixed mode): "DestroyJavaVM" #15 prio=5 os_prio=0 tid=0x00000000008bd800 nid=0x41c waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE "pool-1-thread-4" #14 prio=5 os_prio=0 tid=0x0000000016660800 nid=0x166c waiting on condition [0x0000000016dff000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000eb360088> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) "pool-1-thread-3" #13 prio=5 os_prio=0 tid=0x0000000016660000 nid=0x1e34 waiting on condition [0x0000000016cff000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000eb360088> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) "pool-1-thread-2" #12 prio=5 os_prio=0 tid=0x000000001665f000 nid=0x148 waiting on condition [0x0000000016bff000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000eb360088> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) "pool-1-thread-1" #11 prio=5 os_prio=0 tid=0x000000001665b800 nid=0xdf0 waiting on condition [0x0000000016afe000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000eb360088> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) "Monitor Ctrl-Break" #10 daemon prio=5 os_prio=0 tid=0x000000001641d000 nid=0x2038 runnable [0x00000000169fe000] java.lang.Thread.State: RUNNABLE at java.net.DualStackPlainSocketImpl.accept0(Native Method) at java.net.DualStackPlainSocketImpl.socketAccept(DualStackPlainSocketImpl.java:131) at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:409) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:199) - locked <0x00000000eb39db18> (a java.net.SocksSocketImpl) at java.net.ServerSocket.implAccept(ServerSocket.java:545) at java.net.ServerSocket.accept(ServerSocket.java:513) at com.intellij.rt.execution.application.AppMain$1.run(AppMain.java:90) at java.lang.Thread.run(Thread.java:745) "Service Thread" #9 daemon prio=9 os_prio=0 tid=0x0000000014a1e000 nid=0x360 runnable [0x0000000000000000] java.lang.Thread.State: RUNNABLE "C1 CompilerThread2" #8 daemon prio=9 os_prio=2 tid=0x00000000149c3800 nid=0x89c waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE "C2 CompilerThread1" #7 daemon prio=9 os_prio=2 tid=0x00000000149c0800 nid=0x2048 waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE "C2 CompilerThread0" #6 daemon prio=9 os_prio=2 tid=0x00000000149bd800 nid=0x1aa0 waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE "Attach Listener" #5 daemon prio=5 os_prio=2 tid=0x00000000149bc000 nid=0x108c waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE "Signal Dispatcher" #4 daemon prio=9 os_prio=2 tid=0x00000000149bb000 nid=0x15a4 runnable [0x0000000000000000] java.lang.Thread.State: RUNNABLE "Finalizer" #3 daemon prio=8 os_prio=1 tid=0x00000000023b1000 nid=0x182c in Object.wait() [0x0000000015d1e000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x00000000eb2070b8> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143) - locked <0x00000000eb2070b8> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164) at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209) "Reference Handler" #2 daemon prio=10 os_prio=2 tid=0x00000000023ae000 nid=0x21f4 in Object.wait() [0x0000000015c1f000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <0x00000000eb206af8> (a java.lang.ref.Reference$Lock) at java.lang.Object.wait(Object.java:502) at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:157) - locked <0x00000000eb206af8> (a java.lang.ref.Reference$Lock) "VM Thread" os_prio=2 tid=0x0000000014987000 nid=0x17cc runnable "GC task thread#0 (ParallelGC)" os_prio=0 tid=0x00000000022d7800 nid=0x2208 runnable "GC task thread#1 (ParallelGC)" os_prio=0 tid=0x00000000022d9000 nid=0x24c4 runnable "GC task thread#2 (ParallelGC)" os_prio=0 tid=0x00000000022da800 nid=0x7b0 runnable "GC task thread#3 (ParallelGC)" os_prio=0 tid=0x00000000022dc000 nid=0x2650 runnable "VM Periodic Task Thread" os_prio=2 tid=0x000000001634a800 nid=0x271c waiting on condition JNI global references: 321
您可以使用Thread.getAllStackTraces（）来获取大部分内容。
for (Map.Entry entry : Thread.getAllStackTraces().entrySet()) { System.out.println(entry.getKey() + " " + entry.getKey().getState()); for (StackTraceElement ste : entry.getValue()) { System.out.println("\tat " + ste); } System.out.println(); }