UnsupportedClassVersionError:JVMCFRE003bad 问题分析与解决

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问题分析

com.ibm.ws.webcontainer.annotation.WASAnnotationHelpercollectClasses unable to instantiate class

java.lang.UnsupportedClassVersionError:JVMCFRE003bad major version;class=com/soa/listener/SpringContextLoaderListener, offset=6

at java.lang.ClassLoader.defineClassImpl(NativeMethod) at java.lang.ClassLoader.defineClass(ClassLoader.java:28

 

//解决方案与方法如下:

http://stackoverflow.com/questions/14926402/unsupportedclassversionerror-jvmcfre003-bad-major-version-in-websphere-as-7

 

up vote 17 down vote accepted

WebSphere Application Server V7 does supportJava Platform, Standard Edition (Java SE) 6(seeSpecifications and API documentationin the Network Deployment (All operating systems), Version 7.0 Information Center) and it's sincethe release V8.5 when Java 7 has been supported. I couldn't find the Java 6 SDK documentation, and could only consultIBM JVM MessagesinJava 7 Windows documentation. Alas, I couldn't find the error message in the documentation either. Sincejava.lang.UnsupportedClassVersionErroris"Thrown when the Java Virtual Machine attempts to read a class file and determines that the major and minor version numbers in the file are not supported.", you ran into an issue of building the application with more recent version of Java than the one supported by the runtime environment, i.e. WebSphere Application Server 7.0. I may be mistaken, but I think thatoffset=6in the message is to let you know what position caused the incompatibility issue to occur. It's irrelevant for you, for me, and for many other people, but some might find it useful, esp. when they generate bytecode themselves. Run theversionInfocommand to find out about theInstalled Featuresof WebSphere Application Server V7, e.g. C:\IBM\WebSphere\AppServer>.\bin\versionInfo.bat WVER0010I:Copyright(c) IBM Corporation2002,2005,2008;All rights reserved. WVER0012I:VersionInfo reporter version 1.15.1.47, dated 10/18/11-------------------------------------------------------------------------------- IBM WebSphereProductInstallationStatusReport--------------------------------------------------------------------------------Report at date and time February19,20138:07:20 AM EST Installation--------------------------------------------------------------------------------ProductDirectory C:\IBM\WebSphere\AppServer VersionDirectory C:\IBM\WebSphere\AppServer\properties\version DTD Directory C:\IBM\WebSphere\AppServer\properties\version\dtd LogDirectory C:\ProgramData\IBM\Installation Manager\logs ProductList-------------------------------------------------------------------------------- BPMPC installed ND installed WBM installed InstalledProduct--------------------------------------------------------------------------------Name IBM BusinessProcessManagerAdvanced V8.0Version8.0.1.0 ID BPMPC BuildLevel20121102-1733BuildDate11/2/12Package com.ibm.bpm.ADV.V80_8.0.1000.20121102_2136 Architecture x86-64(64 bit)InstalledFeaturesNon-production BusinessProcessManagerAdvanced-Client(always installed)OptionalLanguagesGermanRussianKoreanBrazilianPortugueseItalianFrenchHungarianSimplifiedChineseSpanishCzechTraditionalChineseJapanesePolishRomanianInstalledProduct--------------------------------------------------------------------------------Name IBM WebSphereApplicationServerNetworkDeploymentVersion8.0.0.5 ID ND BuildLevel cf051243.01BuildDate10/22/12Package com.ibm.websphere.ND.v80_8.0.5.20121022_1902 Architecture x86-64(64 bit)InstalledFeatures IBM 64-bit SDK forJava,Version6EJBDeploy tool for pre-EJB 3.0 modules Embeddable EJB container Sample applications Stand-alone thin clients and resource adapters OptionalLanguagesGermanRussianKoreanBrazilianPortugueseItalianFrenchHungarianSimplifiedChineseSpanishCzechTraditionalChineseJapanesePolishRomanianInstalledProduct--------------------------------------------------------------------------------Name IBM BusinessMonitorVersion8.0.1.0 ID WBM BuildLevel20121102-1733BuildDate11/2/12Package com.ibm.websphere.MON.V80_8.0.1000.20121102_2222 Architecture x86-64(64 bit)OptionalLanguagesGermanRussianKoreanBrazilianPortugueseItalianFrenchHungarianSimplifiedChineseSpanishCzechTraditionalChineseJapanesePolishRomanian--------------------------------------------------------------------------------EndInstallationStatusReport-------------------------------------------------------------------------------- share improve this answer answered Feb 19 '13 at 13:11 Jacek Laskowski 12.3k 4 39 80

1   hi i have same problem but i cannot understand how to fix it. Can you provide some direct answer for this issue– Himanshu Mar 27 '13 at 18:14 i am using webspare 8.5 where webspare use 1.6 internal and my eclipse compiler 1.7– Himanshu Mar 27 '13 at 18:16 5   If you use a Java 7 compiler and target a Java 6 environment you need to set up the higher-version compiler to generate 1.6-compliant bytecode. See-sourceand-targetoptions ofjavac.– Jacek Laskowski Apr 2 '13 at 12:55 add a comment

 

up vote 2 down vote	In this Eclipse Preferences panel you can change the compiler compatibility from 1.7 to 1.6. This solved the similar message I was getting. For Eclipse, it is under: Preferences -> Java -> Compiler: 'Compiler compliance level' share improve this answer answered Oct 11 '13 at 18:32 V.. 21 1
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up vote 2 down vote	This error can occur if you project is compiling with JDK 1.6 and you have dependencies compiled with Java 7. share improve this answer answered Jan 8 '14 at 14:48 ozOli 461 2 6
	Exactly. This normally happens in maven projects– Kris May 27 at 21:06 add a comment

up vote 2 down vote	You should also make sure you have set appropriate Project Facets Java version. Module Properties -> Project Facets -> Java 1.6 should be checked share improve this answer answered May 23 '14 at 14:48 Marik Palyg 21 2
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up vote 1 down vote

I was getting this error in websphere 8.5: java.lang.UnsupportedClassVersionError: JVMCFRE003 bad major version; class=com/xxx/Whatever, offset=6 I had my project JDK level set at 1.7 in eclipse and was8 by default runs on JDK 1.6 so there was a clash. I had to install the optional SDK 1.7 to my websphere server and then the problem went away. I guess I could have also set my project level down to 1.6 in eclipse but I wanted to code to 1.7. share improve this answer answered Feb 3 '14 at 22:48 Glenn 11 1

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up vote 0 down vote

I was getting the same error. In the Project Facets of my Java project, the Java compile level was set to 1.7 whereas the WebSphere Application Server v7.0 had a Runtime Composition of JRE v1.6; setting the Java compile level to 1.6 in Project Facets got rid of the error. I did not have to change the Compiler compliance level though, it's still 1.7. Hope this helps! share improve this answer answered Apr 16 '14 at 19:27 Prince 5,912 3 12 37

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At firstyou should check major version of compiled problematic.classfile, in your casemap/CareMonths. Seethis answerhow to do it. WAS7 uses Java 6 (as said Jacek), and Java 6 uses major version 50, soyou have to compile your project with Java 6. How to set proper version of Java compiler depends on your IDE (e.g. Eclipse, IntelliJ) or build tool (e.g. Maven, Ant).