Error loading class [org.apache.struts2.views.velocity.StrutsResourceLoader]

2015 二月 04 21:04:58 ERROR [com.opensymphony.xwork2.util.finder.ClassFinder] - <Error loading class [org.apache.struts2.views.velocity.StrutsResourceLoader]>

java.lang.NoClassDefFoundError: org/apache/velocity/runtime/resource/loader/ClasspathResourceLoader

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:621)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)

at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1850)

at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:890)

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1354)

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)

at com.opensymphony.xwork2.util.finder.ClassLoaderInterfaceDelegate.loadClass(ClassLoaderInterfaceDelegate.java:34)

at com.opensymphony.xwork2.util.finder.ClassFinder$ClassInfo.get(ClassFinder.java:625)

at org.apache.struts2.convention.PackageBasedActionConfigBuilder$2.test(PackageBasedActionConfigBuilder.java:555)

at org.apache.struts2.convention.PackageBasedActionConfigBuilder$2.test(PackageBasedActionConfigBuilder.java:542)

at com.opensymphony.xwork2.util.finder.ClassFinder.findClasses(ClassFinder.java:395)

at org.apache.struts2.convention.PackageBasedActionConfigBuilder.findActions(PackageBasedActionConfigBuilder.java:380)

at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildActionConfigs(PackageBasedActionConfigBuilder.java:335)

at org.apache.struts2.convention.ClasspathPackageProvider.loadPackages(ClasspathPackageProvider.java:53)

at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:215)

at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:66)

at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:371)

at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:415)

at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69)

at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)

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:3800)

at org.apache.catalina.core.StandardContext.start(StandardContext.java:4450)

at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)

at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)

at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526)

at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:987)

at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:909)

at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:495)

at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1206)

at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:314)

at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)

at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)

at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)

at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)

at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)

at org.apache.catalina.core.StandardService.start(StandardService.java:516)

at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)

at org.apache.catalina.startup.Catalina.start(Catalina.java:583)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)

Caused by: java.lang.ClassNotFoundException: org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)

at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)

... 48 more

启动的时候报这个错误，网上搜索一堆，然后对比了一下以前的项目jar包，缺了

commons-jci-fam-1.0.jar 
velocity-1.6.4.jar 

借鉴参考博客 http://bdk82924.iteye.com/blog/1844261