jstack调试core文件

摘自：https://stackoverflow.com/questions/37331266/jstack-throws-exception-interrogating-a-core

// 错误示例

 1 [root@localhost rpmuser]# jstack core.2299
 Attaching to remote server core.2299, please wait...
 Error attaching to remote server: java.net.MalformedURLException: invalid authority: //core.2299/SARemoteDebugger
 sun.jvm.hotspot.debugger.DebuggerException: java.net.MalformedURLException: invalid authority: //core.2299/SARemoteDebugger
     at sun.jvm.hotspot.RMIHelper.lookup(RMIHelper.java:115)
     at sun.jvm.hotspot.HotSpotAgent.connectRemoteDebugger(HotSpotAgent.java:517)
     at sun.jvm.hotspot.HotSpotAgent.setupDebugger(HotSpotAgent.java:374)
     at sun.jvm.hotspot.HotSpotAgent.go(HotSpotAgent.java:304)
     at sun.jvm.hotspot.HotSpotAgent.attach(HotSpotAgent.java:183)
     at sun.jvm.hotspot.tools.Tool.start(Tool.java:196)
     at sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
     at sun.jvm.hotspot.tools.JStack.main(JStack.java:92)
     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:498)
     at sun.tools.jstack.JStack.runJStackTool(JStack.java:140)
     at sun.tools.jstack.JStack.main(JStack.java:106)
 Caused by: java.net.MalformedURLException: invalid authority: //core.2299/SARemoteDebugger
     at java.rmi.Naming.intParseURL(Naming.java:330)
     at java.rmi.Naming.parseURL(Naming.java:237)
     at java.rmi.Naming.lookup(Naming.java:96)
     at sun.jvm.hotspot.RMIHelper.lookup(RMIHelper.java:113)
     ... 13 more

jvm产生的core.2299文件用如下方式调试

jstack /usr/bin/java core.2299