使用Strusts框架就无法发布的问题解决——MyEclipse环境配置问题

解决方法：

1、排除简单的引进包问题（必须从WEB-INF目录的lib包下引入）

2、环境配置问题（检查环境变量的配置：如果是新装的MyEclipse，应该注意JDK和Tomcat的配置）

检查1：Project->Properties->JavaCompiler->Configure WorkspaceSetting(右边栏)-->选择相应的JDK版本（注意要统一用最新的版本）

ps:这个复选框不选

检查2：windows-->Peferences-->MyEclispse EnterPrise Wokerbench-->server-->Tomcat-->4.x,5.x,6.x的JDK版本选择之前配置的JDK版本即可

小提示：查看项目的发布名的时候project-->MyEclipse-->web

出现的问题报错信息：

严重: Exception starting filter struts2
java.lang.UnsupportedClassVersionError: Badversion number in .class file
   at java.lang.ClassLoader.defineClass1(Native Method)
   at java.lang.ClassLoader.defineClass(Unknown Source)
   at java.security.SecureClassLoader.defineClass(UnknownSource)
   atorg.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1819)
   atorg.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:872)
   atorg.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1327)
   atorg.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1206)
   atcom.opensymphony.xwork2.util.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:138)
   atcom.opensymphony.xwork2.ObjectFactory.getClassInstance(ObjectFactory.java:96)
   atcom.opensymphony.xwork2.config.providers.XmlConfigurationProvider.verifyAction(XmlConfigurationProvider.java:398)
   atcom.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addAction(XmlConfigurationProvider.java:355)
   atcom.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:460)
   atcom.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:265)
   atorg.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:111)
   atcom.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:189)
   atcom.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)
   atorg.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:360)
   atorg.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:403)
   atorg.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69)
   atorg.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:48)
   atorg.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275)
   atorg.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:397)
   atorg.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108)
   atorg.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3709)
   atorg.apache.catalina.core.StandardContext.start(StandardContext.java:4356)
   atorg.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
   atorg.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
   atorg.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
   atorg.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:924)
   atorg.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:887)
   atorg.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
   atorg.apache.catalina.startup.HostConfig.start(HostConfig.java:1147)
   atorg.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
   atorg.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
   atorg.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
   atorg.apache.catalina.core.StandardHost.start(StandardHost.java:719)
   atorg.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
   atorg.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
   atorg.apache.catalina.core.StandardService.start(StandardService.java:516)
   atorg.apache.catalina.core.StandardServer.start(StandardServer.java:710)
   at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
   atsun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(UnknownSource)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(UnknownSource)
   at java.lang.reflect.Method.invoke(Unknown Source)
   atorg.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
   at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
2012-1-20 23:09:44org.apache.catalina.core.StandardContext start
严重: Error filterStart
2012-1-20 23:09:44org.apache.catalina.core.StandardContext start
严重: Context [/Struts2_0300_Action] startup faileddue to previous errors