报错信息：
1 严重: Dispatcher initialization failed 2 Unable to load configuration. - bean - file:/E:/MIKEY/mikey/jsp/apache-tomcat-7.0.86/webapps/Struct2_Hello_World/WEB-INF/classes/struts.xml:12:136 3 at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:69) 4 at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:390) 5 at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:436) 6 at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69) 7 at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51) 8 at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:285) 9 at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:266) 10 at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108) 11 at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4981) 12 at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5683) 13 at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) 14 at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:1017) 15 at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:993) 16 at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652) 17 at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1296) 18 at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:2038) 19 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 20 at java.util.concurrent.FutureTask.run(FutureTask.java:266) 21 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 22 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 23 at java.lang.Thread.run(Thread.java:745) 24 Caused by: Unable to load bean: type:com.opensymphony.xwork2.until.ValueStackFactory class:com.opensymphony.xwork2.ognl.OgnlValueStackFactory - bean - file:/E:/MIKEY/mikey/jsp/apache-tomcat-7.0.86/webapps/Struct2_Hello_World/WEB-INF/classes/struts.xml:12:136 25 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:235) 26 at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:102) 27 at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:180) 28 at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:66) 29 ... 20 more 30 Caused by: java.lang.ClassNotFoundException: com.opensymphony.xwork2.until.ValueStackFactory 31 at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1928) 32 at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1771) 33 at com.opensymphony.xwork2.util.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:157) 34 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:209) 35 ... 23 more 36 37 八月 17, 2018 7:54:54 下午 org.apache.catalina.core.StandardContext filterStart 38 严重: Exception starting filter struts2 39 Unable to load configuration. - bean - file:/E:/MIKEY/mikey/jsp/apache-tomcat-7.0.86/webapps/Struct2_Hello_World/WEB-INF/classes/struts.xml:12:136 40 at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:449) 41 at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69) 42 at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51) 43 at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:285) 44 at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:266) 45 at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108) 46 at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4981) 47 at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5683) 48 at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) 49 at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:1017) 50 at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:993) 51 at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652) 52 at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1296) 53 at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:2038) 54 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 55 at java.util.concurrent.FutureTask.run(FutureTask.java:266) 56 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 57 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 58 at java.lang.Thread.run(Thread.java:745) 59 Caused by: Unable to load configuration. - bean - file:/E:/MIKEY/mikey/jsp/apache-tomcat-7.0.86/webapps/Struct2_Hello_World/WEB-INF/classes/struts.xml:12:136 60 at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:69) 61 at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:390) 62 at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:436) 63 ... 18 more 64 Caused by: Unable to load bean: type:com.opensymphony.xwork2.until.ValueStackFactory class:com.opensymphony.xwork2.ognl.OgnlValueStackFactory - bean - file:/E:/MIKEY/mikey/jsp/apache-tomcat-7.0.86/webapps/Struct2_Hello_World/WEB-INF/classes/struts.xml:12:136 65 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:235) 66 at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:102) 67 at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:180) 68 at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:66) 69 ... 20 more 70 Caused by: java.lang.ClassNotFoundException: com.opensymphony.xwork2.until.ValueStackFactory 71 at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1928) 72 at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1771) 73 at com.opensymphony.xwork2.util.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:157) 74 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:209) 75 ... 23 more
报错原因：
项目lib文件夹中存在相同的jar包存在冲突；
解决方法：
将重复架包删除在重新部署项目即可解决