dumpclass

Dump classes from running JVM process.

License	License Apache 2
GroupId	GroupId io.github.hengyunabc
ArtifactId	ArtifactId dumpclass
Last Version	Last Version 0.0.2
Release Date	Release Date Apr 18, 2018
Type	Type jar
Description	Description dumpclass Dump classes from running JVM process.
Project URL	Project URL https://github.com/hengyunabc/dumpclass
Source Code Management	Source Code Management https://github.com/hengyunabc/dumpclass

Download dumpclass

Filename	Size
dumpclass-0.0.2.pom
dumpclass-0.0.2.jar	13 KB
dumpclass-0.0.2-sources.jar	6 KB
dumpclass-0.0.2-javadoc.jar	43 KB
Browse

How to add to project

Apache Maven

<!-- https://jarcasting.com/artifacts/io.github.hengyunabc/dumpclass/ -->
<dependency>
    <groupId>io.github.hengyunabc</groupId>
    <artifactId>dumpclass</artifactId>
    <version>0.0.2</version>
</dependency>

Gradle Groovy

// https://jarcasting.com/artifacts/io.github.hengyunabc/dumpclass/
implementation 'io.github.hengyunabc:dumpclass:0.0.2'

Gradle Kotlin

// https://jarcasting.com/artifacts/io.github.hengyunabc/dumpclass/
implementation ("io.github.hengyunabc:dumpclass:0.0.2")

Apache Buildr

'io.github.hengyunabc:dumpclass:jar:0.0.2'

Apache Ivy

<dependency org="io.github.hengyunabc" name="dumpclass" rev="0.0.2">
  <artifact name="dumpclass" type="jar" />
</dependency>

Groovy Grape

@Grapes(
@Grab(group='io.github.hengyunabc', module='dumpclass', version='0.0.2')
)

Scala SBT

libraryDependencies += "io.github.hengyunabc" % "dumpclass" % "0.0.2"

Leiningen

[io.github.hengyunabc/dumpclass "0.0.2"]

Dependencies

compile (1)

Group / Artifact	Type	Version
args4j : args4j	jar	2.33

test (1)

Group / Artifact	Type	Version
junit : junit	jar	3.8.1

system (1)

Group / Artifact	Type	Version
sun.jvm.hotspot » sa-jdi	jar	1.6

Project Modules

There are no modules declared in this project.

Dumpclass

Dump classes from running JVM process by sa-jdi.jar.

Support wildcard match
Support multi classloader

Download dumpclass.jar

You can download dumpclass.jar from maven center.

http://search.maven.org/#search%7Cga%7C1%7Cdumpclass

wget http://search.maven.org/remotecontent?filepath=io/github/hengyunabc/dumpclass/0.0.2/dumpclass-0.0.2.jar -O dumpclass.jar

Usage

Usage:
 pattern                  : class name wildcard match pattern
 --noStat                 : do not print dump stat (default: false)
 --sensitive              : class name wildcard match sensitive. In mac os, try
                            this option. (default: false)
 -c (--classLoaderPrefix) : classLoaderPrefix (default: false)
 -o (--outputDir) VAL     : outputDir
 -p (--pid) N             : pid

Example:
  java -jar dumpclass.jar -p 4345 *StringUtils
  java -jar dumpclass.jar -p 4345 -o /tmp/dump *StringUtils
  java -jar dumpclass.jar -p 4345 -o /tmp/dump --classLoaderPrefix  *StringUtils
Use the specified sa-jdi.jar:
  java -cp './dumpclass.jar:$JAVA_HOME/lib/sa-jdi.jar' io.github.hengyunabc.dumpclass.DumpMain 4345 *StringUtils

Trouble

Try to use sudo

Error attaching to process: sun.jvm.hotspot.debugger.DebuggerException: Can't attach to the process. Could be caused by an incorrect pid or lack of privileges.
sun.jvm.hotspot.debugger.DebuggerException: sun.jvm.hotspot.debugger.DebuggerException: Can't attach to the process. Could be caused by an incorrect pid or lack of privileges.
	at sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal$BsdDebuggerLocalWorkerThread.execute(BsdDebuggerLocal.java:169)
	at sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal.attach(BsdDebuggerLocal.java:287)
	at sun.jvm.hotspot.HotSpotAgent.attachDebugger(HotSpotAgent.java:671)
	at sun.jvm.hotspot.HotSpotAgent.setupDebuggerDarwin(HotSpotAgent.java:659)
	at sun.jvm.hotspot.HotSpotAgent.setupDebugger(HotSpotAgent.java:341)
	at sun.jvm.hotspot.HotSpotAgent.go(HotSpotAgent.java:304)
	at sun.jvm.hotspot.HotSpotAgent.attach(HotSpotAgent.java:140)
	at sun.jvm.hotspot.tools.Tool.start(Tool.java:185)
	at sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
	at sun.jvm.hotspot.tools.jcore.ClassDump.main(ClassDump.java:180)
	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 io.github.hengyunabc.dumpclass.DumpMain.run(DumpMain.java:132)
	at io.github.hengyunabc.dumpclass.DumpMain.doMain(DumpMain.java:68)
	at io.github.hengyunabc.dumpclass.DumpMain.main(DumpMain.java:61)
	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 io.github.hengyunabc.dumpclass.DumpMain$2.run(DumpMain.java:184)
	at java.lang.Thread.run(Thread.java:745)
Caused by: sun.jvm.hotspot.debugger.DebuggerException: Can't attach to the process. Could be caused by an incorrect pid or lack of privileges.
	at sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal.attach0(Native Method)
	at sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal.access$100(BsdDebuggerLocal.java:65)
	at sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal$1AttachTask.doit(BsdDebuggerLocal.java:278)
	at sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal$BsdDebuggerLocalWorkerThread.run(BsdDebuggerLocal.java:144)

Make sure use the same jdk version.

Attaching to process ID 53577, please wait...
Exception in thread "main" java.lang.reflect.InvocationTargetException
	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 io.github.hengyunabc.dumpclass.DumpMain.main(DumpMain.java:101)
Caused by: java.lang.InternalError: void* type hasn't been seen when parsing int*
	at sun.jvm.hotspot.HotSpotTypeDataBase.recursiveCreateBasicPointerType(HotSpotTypeDataBase.java:721)
	at sun.jvm.hotspot.HotSpotTypeDataBase.lookupType(HotSpotTypeDataBase.java:134)
	at sun.jvm.hotspot.HotSpotTypeDataBase.lookupOrCreateClass(HotSpotTypeDataBase.java:631)
	at sun.jvm.hotspot.HotSpotTypeDataBase.createType(HotSpotTypeDataBase.java:751)
	at sun.jvm.hotspot.HotSpotTypeDataBase.readVMTypes(HotSpotTypeDataBase.java:195)
	at sun.jvm.hotspot.HotSpotTypeDataBase.<init>(HotSpotTypeDataBase.java:89)
	at sun.jvm.hotspot.HotSpotAgent.setupVM(HotSpotAgent.java:403)
	at sun.jvm.hotspot.HotSpotAgent.go(HotSpotAgent.java:305)
	at sun.jvm.hotspot.HotSpotAgent.attach(HotSpotAgent.java:140)
	at sun.jvm.hotspot.tools.Tool.start(Tool.java:185)
	at sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
	at sun.jvm.hotspot.tools.jcore.ClassDump.main(ClassDump.java:180)
	... 5 more

One class loaded by multi ClassLoader

Try to use HSDB. After attach java process, "Tools", "Class Browser".

sudo java -classpath "$JAVA_HOME/lib/sa-jdi.jar" sun.jvm.hotspot.HSDB

complie dumpclass.jar

mvn clean package
ls -alh target

License

Apache License V2

Versions

Version
0.0.2 Apr 18, 2018
0.0.1 Apr 9, 2016

dumpclass

License

GroupId

ArtifactId

Last Version

Release Date

Type

Description

Project URL

Source Code Management

Download dumpclass

How to add to project

Dependencies

compile (1)

test (1)

system (1)

Project Modules

Dumpclass

Download dumpclass.jar

Usage

Trouble

complie dumpclass.jar

License

Versions