CODEWITHSUNDEEP
javawindowseclipseserviceapache-commons-daemon
Prerna Achtani
Prerna Achtani

Reputation: 11

java.lang.NoClassDefFoundError: ajavaservice/DemoService

I am trying to run a Java program as a Windows service and my log file shows this error. I guess there is an error in providing the path but I am not able to figure it out.

2017-06-27 15:43:21 Commons Daemon procrun stderr initialized
    java.lang.NoClassDefFoundError: ajavaservice/DemoService 
Caused by:
    java.lang.ClassNotFoundException: ajavaservice.DemoService  
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)

My batch file

set SERVICE_NAME=JavaService
set PR_INSTALL=C:\Eclipse\JavaService\prunsrv.exe

REM Service log configuration
set PR_LOGPREFIX=JavaService
set PR_LOGPATH=C:\Logs
set PR_STDOUTPUT=C:\Logs\stdout.txt
set PR_STDERROR=C:\Logs\stderr.txt
set PR_LOGLEVEL=Error

REM Path to java installation
set PR_JVM=C:\Program Files\Java\jre7\bin\client\jvm.dll
set PR_CLASSPATH=DemoService1.jar

REM Startup configuration
set PR_STARTUP=auto
set PR_STARTMODE=jvm
set PR_STARTCLASS=com.service.demoservice.DemoService
set PR_STARTMETHOD=start

REM Shutdown configuration
set PR_STOPMODE=jvm
set PR_STOPCLASS=com.service.demoservice.DemoService
set PR_STOPMETHOD=stop

REM JVM configuration
set PR_JVMMS=256
set PR_JVMMX=1024
set PR_JVMSS=4000
set PR_JVMOPTIONS=-Duser.language=DE;-Duser.region=de

REM Install service
prunsrv.exe //IS//JavaService

Upvotes: 1

Views: 697

Answers (1)

Stephen C
Stephen C

Reputation: 719259

According to the stacktrace, the prunsrv.exe is trying to load a Java class whose full name is ajavaservice.DemoService, but the classloader cannot find it.

Now, I can't see where your BAT file is telling prunsrv.exe to use that particular name. (Maybe you have "massaged" something? Maybe your com.service.demoservice.DemoService class refers to it in some way?)

Either way, the solution is to ensure that the missing file is actually on the classpath. For a start, check that the the JAR file you are using contains a an entry for "/ajavaservice/DemoService.class". (Use "jar -t ..." to check it!)

UPDATE

Based on the comments, that's what the problem turned out to be. The classpath was incorrect. It apparently used an incorrect pathname for a JAR, which caused an old version to be used.

For other people with problems like this: if you get a ClassNotFoundException check your JARs and your classpath carefully. You are missing something.

Upvotes: 1

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