严重: Exception starting filter struts2
Unable to load configuration. - Class: org.gjt.xpp.jaxp11.SAXParserFactoryImpl
File: SAXParserFactoryImpl.java
Method: newSAXParser
Line: 100 - org/gjt/xpp/jaxp11/SAXParserFactoryImpl.java:100:-1
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:502)
at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:74)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:57)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:281)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:262)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:107)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4775)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5452)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:656)
at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1635)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:701)
Caused by: Unable to load configuration. - Class: org.gjt.xpp.jaxp11.SAXParserFactoryImpl
File: SAXParserFactoryImpl.java
Method: newSAXParser
Line: 100 - org/gjt/xpp/jaxp11/SAXParserFactoryImpl.java:100:-1
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:70)
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:446)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:490)
... 19 more
Caused by: Unable to load jar:file:/home/abc/workspacegit/kaka-space/WebRoot/WEB-INF/lib/struts2-core-2.3.15.1.jar!/struts-default.xml - Class: org.gjt.xpp.jaxp11.SAXParserFactoryImpl
File: SAXParserFactoryImpl.java
Method: newSAXParser
Line: 100 - org/gjt/xpp/jaxp11/SAXParserFactoryImpl.java:100:-1
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadConfigurationFiles(XmlConfigurationProvider.java:1022)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadDocuments(XmlConfigurationProvider.java:165)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.init(XmlConfigurationProvider.java:132)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:225)
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:67)
... 21 more
Caused by: Unable to create SAX parser - Class: org.gjt.xpp.jaxp11.SAXParserFactoryImpl
File: SAXParserFactoryImpl.java
Method: newSAXParser
Line: 100 - org/gjt/xpp/jaxp11/SAXParserFactoryImpl.java:100:-1
at com.opensymphony.xwork2.util.DomHelper.parse(DomHelper.java:107)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadConfigurationFiles(XmlConfigurationProvider.java:1017)
... 25 more
Caused by: javax.xml.parsers.ParserConfigurationException: validation is not supported
at org.gjt.xpp.jaxp11.SAXParserFactoryImpl.newSAXParser(SAXParserFactoryImpl.java:100)
at com.opensymphony.xwork2.util.DomHelper.parse(DomHelper.java:105)
... 26 more
2014-7-25 15:41:28 org.apache.catalina.core.StandardContext startInternal
严重: Error filterStart
2014-7-25 15:41:28 org.apache.catalina.core.StandardContext startInternal
严重: Context [] startup failed due to previous errors
------解决思路----------------------
可能是配置文件改动过程中，格式被破坏了。建议重新拷贝一份配置文件，再一行一行将自己的配置贴进去（不要带空白字符）。
最好使用UE等工具，不要使用Eclipse的格式化快捷键。