最近老是在运行eclipse的时候，美国空间，虚拟主机，出现这样的问题：
1 Exception in thread “ContainerBackgroundProcessor[StandardEngine[Catalina]]” java.lang.OutOfMemoryError: PermGen space 2 at java.lang.ClassLoader.defineClass1(Native Method) 3 at java.lang.ClassLoader.defineClass(Unknown Source) 4 at java.security.SecureClassLoader.defineClass(Unknown Source) 5at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2904) 6at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1173) 7at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1681) 8at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559) 9at com.opensymphony.xwork2.inject.ContainerImpl$5.create(ContainerImpl.java:311)10at com.opensymphony.xwork2.inject.ContainerImpl$5.create(ContainerImpl.java:307)11at com.opensymphony.xwork2.inject.util.ReferenceCache$CallableCreate.call(ReferenceCache.java:150)12 at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)13 at java.util.concurrent.FutureTask.run(Unknown Source)14at com.opensymphony.xwork2.inject.util.ReferenceCache.internalCreate(ReferenceCache.java:76)15at com.opensymphony.xwork2.inject.util.ReferenceCache.get(ReferenceCache.java:116)16at com.opensymphony.xwork2.inject.ContainerImpl.getConstructor(ContainerImpl.java:603)17at com.opensymphony.xwork2.inject.ContainerBuilder$5.create(ContainerBuilder.java:204)18at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51)19at com.opensymphony.xwork2.inject.ContainerBuilder$3.create(ContainerBuilder.java:93)20at com.opensymphony.xwork2.inject.ContainerBuilder$7.call(ContainerBuilder.java:487)21at com.opensymphony.xwork2.inject.ContainerBuilder$7.call(ContainerBuilder.java:484)22at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:580)23at com.opensymphony.xwork2.inject.ContainerBuilder.create(ContainerBuilder.java:484)24at com.opensymphony.xwork2.config.impl.DefaultConfiguration.createBootstrapContainer(DefaultConfiguration.java:288)25at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:205)26at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:66)27at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:390)28at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:437)29at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:74)30at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)31at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:277)32at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258)33at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:382)，香港虚拟主机没有行李，没有背包，不带电脑更不要手机，
