把项目从一台电脑拷到另一台电脑中，结果就启动不了了，错误如下，求牛人帮忙看一下！
一月 06, 2013 7:34:06 下午 org.apache.catalina.startup.ContextConfig checkHandlesTypes
WARNING: Unable to load class [org.apache.xml.resolver.tools.ResolvingXMLReader] to check against the @HandlesTypes annotation of one or more ServletContentInitializers.
java.lang.ClassNotFoundException: org.apache.xml.resolver.tools.ResolvingXMLReader
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1666)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1511)
at org.apache.catalina.startup.ContextConfig.checkHandlesTypes(ContextConfig.java:1883)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:1846)
at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1733)
at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1692)
at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1678)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1245)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:313)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:89)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4667)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:988)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:771)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:988)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:275)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:427)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:649)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
at org.apache.catalina.startup.Catalina.start(Catalina.java:585)
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:415)
------解决方案--------------------
ClassNotFound 的嘛，是不是项目有些包是引用的外部包，而不在项目下面。还有开发环境是不是一样的。
------解决方案--------------------
jar包路径问题？
------解决方案--------------------
java.lang.ClassNotFoundException: org.apache.xml.resolver.tools.ResolvingXMLReaderp
------解决方案--------------------
重新导入jar包 编译工程试试
------解决方案--------------------