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

快来打我* 2022-03-28 03:39 299阅读 0赞

昨天在中心建立了一个非常简单的struts1.x的工程，但是今天到家里怎么都打不开，一直报这样的错误： 

  1. 严重: Begin event threw exception
  3. java.lang.reflect.InvocationTargetException
  5. at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  7. at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
  9. at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  11. at java.lang.reflect.Method.invoke(Unknown Source)
  13. at org.apache.commons.beanutils.PropertyUtilsBean.invokeMethod(PropertyUtilsBean.java:1773)
  15. at org.apache.commons.beanutils.PropertyUtilsBean.setSimpleProperty(PropertyUtilsBean.java:1759)
  17. at org.apache.commons.beanutils.PropertyUtilsBean.setNestedProperty(PropertyUtilsBean.java:1648)
  19. at org.apache.commons.beanutils.PropertyUtilsBean.setProperty(PropertyUtilsBean.java:1677)
  21. at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:1022)
  23. at org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:811)
  25. at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:298)
  27. at org.apache.commons.digester.SetPropertiesRule.begin(SetPropertiesRule.java:217)
  29. at org.apache.commons.digester.Rule.begin(Rule.java:152)
  31. at org.apache.commons.digester.Digester.startElement(Digester.java:1286)
  33. at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(Unknown Source)
  35. at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startElement(Unknown Source)
  37. at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
  39. at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
  41. at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
  43. at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
  45. at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
  47. at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
  49. at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
  51. at org.apache.commons.digester.Digester.parse(Digester.java:1572)
  53. at org.apache.struts.action.ActionServlet.parseModuleConfigFile(ActionServlet.java:738)
  55. at org.apache.struts.action.ActionServlet.initModuleConfig(ActionServlet.java:687)
  57. at org.apache.struts.action.ActionServlet.init(ActionServlet.java:333)
  59. at javax.servlet.GenericServlet.init(GenericServlet.java:212)
  61. at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1172)
  63. at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:992)
  65. at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4058)
  67. at org.apache.catalina.core.StandardContext.start(StandardContext.java:4371)
  69. at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
  71. at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
  73. at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
  75. at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:926)
  77. at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:889)
  79. at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
  81. at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
  83. at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
  85. at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
  87. at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
  89. at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
  91. at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
  93. at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
  95. at org.apache.catalina.core.StandardService.start(StandardService.java:516)
  97. at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
  99. at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
  101. at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  103. at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
  105. at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  107. at java.lang.reflect.Method.invoke(Unknown Source)
  109. at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
  111. at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
  113. Caused by: java.lang.UnsupportedClassVersionError: Bad version number in .class file (unable to load class com.kay.web.form.UserForm)
  115. at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1851)
  117. at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:890)
  119. at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1354)
  121. at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
  123. at org.apache.struts.config.FormBeanConfig.formBeanClass(FormBeanConfig.java:358)
  125. at org.apache.struts.config.FormBeanConfig.setType(FormBeanConfig.java:152)
  127. ... 54 more
  129. 2009-4-14 10:42:02 org.apache.struts.action.ActionServlet handleConfigException
  131. 严重: Parsing error processing resource path /WEB-INF/struts-config.xml
  133. java.lang.reflect.InvocationTargetException
  135. at org.apache.commons.digester.Digester.createSAXException(Digester.java:2792)
  137. at org.apache.commons.digester.Digester.createSAXException(Digester.java:2818)
  139. at org.apache.commons.digester.Digester.startElement(Digester.java:1289)
  141. at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(Unknown Source)
  143. at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startElement(Unknown Source)
  145. at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
  147. at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
  149. at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
  151. at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
  153. at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
  155. at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
  157. at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
  159. at org.apache.commons.digester.Digester.parse(Digester.java:1572)
  161. at org.apache.struts.action.ActionServlet.parseModuleConfigFile(ActionServlet.java:738)
  163. at org.apache.struts.action.ActionServlet.initModuleConfig(ActionServlet.java:687)
  165. at org.apache.struts.action.ActionServlet.init(ActionServlet.java:333)
  167. at javax.servlet.GenericServlet.init(GenericServlet.java:212)
  169. at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1172)
  171. at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:992)
  173. at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4058)
  175. at org.apache.catalina.core.StandardContext.start(StandardContext.java:4371)
  177. at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
  179. at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
  181. at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
  183. at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:926)
  185. at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:889)
  187. at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
  189. at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
  191. at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
  193. at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
  195. at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
  197. at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
  199. at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
  201. at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
  203. at org.apache.catalina.core.StandardService.start(StandardService.java:516)
  205. at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
  207. at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
  209. at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  211. at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
  213. at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  215. at java.lang.reflect.Method.invoke(Unknown Source)
  217. at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
  219. at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
  221. 2009-4-14 10:42:02 org.apache.catalina.core.ApplicationContext log
  223. 信息: Marking servlet action as unavailable
  225. 2009-4-14 10:42:02 org.apache.catalina.core.StandardContext loadOnStartup
  227. 严重: Servlet /struts threw load() exception
  229. javax.servlet.UnavailableException: Parsing error processing resource path /WEB-INF/struts-config.xml
  231. at org.apache.struts.action.ActionServlet.handleConfigException(ActionServlet.java:769)
  233. at org.apache.struts.action.ActionServlet.parseModuleConfigFile(ActionServlet.java:745)
  235. at org.apache.struts.action.ActionServlet.initModuleConfig(ActionServlet.java:687)
  237. at org.apache.struts.action.ActionServlet.init(ActionServlet.java:333)
  239. at javax.servlet.GenericServlet.init(GenericServlet.java:212)
  241. at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1172)
  243. at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:992)
  245. at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4058)
  247. at org.apache.catalina.core.StandardContext.start(StandardContext.java:4371)
  249. at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
  251. at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
  253. at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
  255. at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:926)
  257. at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:889)
  259. at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
  261. at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
  263. at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
  265. at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
  267. at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
  269. at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
  271. at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
  273. at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
  275. at org.apache.catalina.core.StandardService.start(StandardService.java:516)
  277. at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
  279. at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
  281. at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  283. at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
  285. at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  287. at java.lang.reflect.Method.invoke(Unknown Source)
  289. at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
  291. at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)

后来发现是在中心创建这个工程的时候，使用的JDK是Java5但是家里是JDK6，所以或造成编译出错，解决方案如下（在Eclipse中）：

2009-4-14 11-13-07

2009-4-14 11-13-30

2009-4-14 11-13-52

2009-4-14 11-15-02

启动tomcat，OK！

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