Struts2错误求教，在线等！我是个菜鸟看不懂，大家来帮忙看看。

Question

错误信息如下：
严重: Dispatcher initialization failed
Unable to load bean: type:com.opensymphony.xwork2.util.ValueStackFactory class:com.opensymphony.xwork2.ognl.OgnlValueStackFactory - bean - jar:file:/C:/Users/yumj/Workspaces/MyEclipse%208.6/.metadata/.me_tcat/webapps/Demo/WEB-INF/lib/struts2-core-2.1.8.1.jar!/struts-default.xml:70:140
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:208)
at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:101)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reload(DefaultConfiguration.java:131)
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:52)
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:374)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:418)
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:3693)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4340)
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:525)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
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:566)
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.IncompatibleClassChangeError: Implementing class
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:1817)
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:872)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1325)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
at com.opensymphony.xwork2.util.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:139)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:180)
... 34 more
2011-9-2 15:06:51 org.apache.catalina.core.StandardContext filterStart
严重: Exception starting filter struts2
Unable to load bean: type:com.opensymphony.xwork2.util.ValueStackFactory class:com.opensymphony.xwork2.ognl.OgnlValueStackFactory - bean - jar:file:/C:/Users/yumj/Workspaces/MyEclipse%208.6/.metadata/.me_tcat/webapps/Demo/WEB-INF/lib/struts2-core-2.1.8.1.jar!/struts-default.xml:70:140
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:431)
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:3693)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4340)
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:525)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
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:566)
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: Unable to load bean: type:com.opensymphony.xwork2.util.ValueStackFactory class:com.opensymphony.xwork2.ognl.OgnlValueStackFactory - bean - jar:file:/C:/Users/yumj/Workspaces/MyEclipse%208.6/.metadata/.me_tcat/webapps/Demo/WEB-INF/lib/struts2-core-2.1.8.1.jar!/struts-default.xml:70:140
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:208)
at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:101)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reload(DefaultConfiguration.java:131)
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:52)
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:374)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:418)
... 29 more
Caused by: java.lang.IncompatibleClassChangeError: Implementing class
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:1817)
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:872)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1325)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
at com.opensymphony.xwork2.util.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:139)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:180)
... 34 more
2011-9-2 15:06:51 org.apache.catalina.core.StandardContext start
严重: Error filterStart
2011-9-2 15:06:51 org.apache.catalina.core.StandardContext start
严重: Context [/Demo] startup failed due to previous errors

Answer 1

jar包有问题。重新下一份jar包。

Answer 2

commons-fileupload-1.2.1.jar
commons-io-1.3.2.jar
commons-logging-1.0.4.jar
freeer.jar
ognl-2.6.11.jar
xwork-2.0.6.jar
用的这6个包。

Answer 3

貌似你的jar不够commons-fileupload-1.2.1.jar
commons-io-1.3.2.jar
commons-logging-1.0.4.jar
freeer-2.3.15.jar
ognl-2.7.3.jar
struts2-core-2.1.8.jar
xwork-core-2.1.6.jar

Answer 4

- -! 这些包是刚在CSDN下的啊

Answer 5

lz看一下xwork-2.0.6.jar这个版本对不。

Answer 6

最好去官网下一个。www.apache.org搜struts

Answer 7

http://mirror.atlanticmetro.net/apache//struts/library/struts-2.2.3-lib.zip

Answer 8

struts2-core-2.2.3.jar
struts2-core-2.1.8.1.jar
struts-core-1.3.10.jar
有三个这个包是不是关这几个包的事啊！

Answer 9

 Exception starting filter struts2
Unable to load bean: type:com.opensymphony.xwork2.util.ValueStackFactory class:com.opensymphony.xwork2.ognl.OgnlValueStackFactory - bean - jar:file:/C:/Users/yumj/Workspaces/MyEclipse%208.6/.metadata/.me_tcat/webapps/Demo/WEB-INF/lib/struts2-core-2.1.8.1.jar!/struts-default.xml:70:140
struts.xml文件里面是否将这个类注入进去了

Answer 10

恩 确实有一句<package name="struts2"  namespace="/mystruts"  extends="struts-defautl">

Answer 11

我的也报这个错，找了很多帖子，后来自己无意中解决了，总结一下：1.缺包，比如必须的5个jar包，其实应该是7个，少了2个，叫commons-fileupload-1.2.1.jar和commons-logging-1.0.4.jar。貌似是。
2.tomcat的安装路径有空格。使用struts2.1.8，所用的tomcat的安装路径中不能有空格，至于为什么，不记得了。
3.jar包冲突。比如说我复制了一部分jar包到lib下，而且我还Add external jar，这两种情况下只要要重复的，tomcat就不知道如何处理了。就会导致上面的错误。还有就是看看系统名称jar包不能版本的，是不是导入重复。比我的问题就是因为我同时导入了xwork-core-2.1.6.jar和xwork-2.0.7.jar