转载java.lang.UnsupportedClassVersionError: Bad version number in .class file 异常处理

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异常信息备忘

Java Apache 360 Eclipse SUN

java.lang.UnsupportedClassVersionError: Bad version number in .class file 
at java.lang.ClassLoader.defineClass1(Native Method) 
at java.lang.ClassLoader.defineClass(Unknown Source) 
at java.security.SecureClassLoader.defineClass(Unknown Source) 
at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1815) 
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:872) 
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1325) 
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204) 
at com.opensymphony.xwork2.util.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:138) 
at com.opensymphony.xwork2.ObjectFactory.getClassInstance(ObjectFactory.java:96) 
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.verifyAction(XmlConfigurationProvider.java:398) 
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addAction(XmlConfigurationProvider.java:355) 
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:460) 
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:265) 
at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:111) 
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:189) 
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55) 
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:360) 
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:403) 
at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:190) 
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275) 
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:397) 
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108) 
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3693) 
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342) 
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:761) 
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:741) 
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525) 
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920) 
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883) 
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492) 
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138) 
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) 
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120) 
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1023) 
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) 
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1015) 
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) 
at org.apache.catalina.core.StandardService.start(StandardService.java:448) 
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) 
at org.apache.catalina.startup.Catalina.start(Catalina.java:552) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
at java.lang.reflect.Method.invoke(Unknown Source) 
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) 
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) 
2009-6-2 10:16:37 org.apache.catalina.core.StandardContext start

后来发现是在中心创建这个工程的时候，使用的JDK是5但是家里是JDK6，所以或造成编译出错，解决方案如下（在Eclipse中）：