The problem
The following will usually be displayed in the catalina.out log
Sep 23, 2009 7:57:15 AM org.apache.catalina.core.StandardContext start SEVERE: Error filterStart Sep 23, 2009 7:57:15 AM org.apache.catalina.core.StandardContext start SEVERE: Context [/OfficeMAWeb] startup failed due to previous errors
The solution
This is usually due to conflicting struts 2 jar files in the webapp lib folder, the error will be explained in details in the localhost<date>.log, in my case I had both struts2-core-2.1.6.jar and struts2-core-2.0.12.jar in the lib folder
INFO: Initializing Spring root WebApplicationContext
Sep 23, 2009 7:51:09 AM org.apache.catalina.core.StandardContext filterStart
SEVERE: Exception starting filter struts2
Unable to load bean: type: class:com.opensymphony.xwork2.ObjectFactory - bean -
jar:file:/home/omerio/apache-tomcat-6.0.20/webapps/OfficeMAWeb/WEB-INF/lib/struts2-core-2.1.6.jar!/
struts-default.xml:29:72
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:395)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:452)
at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:203)
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.deployWAR(HostConfig.java:850)
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:724)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:493)
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: Bean type class com.opensymphony.xwork2.ObjectFactory with the name
xwork has already been loaded by bean - jar:file:/home/omerio/apache-tomcat-6.0.20/
webapps/OfficeMAWeb/WEB-INF/lib/struts2-core-2.0.12.jar!/struts-default.xml:30:72 - bean - jar:file:/home/omerio/apache-tomcat-6.0.20
/webapps/OfficeMAWeb/WEB-INF/lib/struts2-core-2.1.6.jar!/struts-default.xml:29:72
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register
(XmlConfigurationProvider.java:193)
Sep 23, 2009 7:51:09 AM org.apache.catalina.core.ApplicationContext log
INFO: Closing Spring root WebApplicationContext