I am trying out the struts2 Rest plugin, upon adding the jar to my lib folder this error showed up.
Jan 18, 2013 9:16:44 AM org.apache.catalina.core.StandardContext filterStart
SEVERE: Exception starting filter struts2
Unable to load configuration. - bean - jar:file:/C:/Users/John/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/HitPlay/WEB-INF/lib/struts2-rest-plugin-2.3.7.jar!/struts-plugin.xml:36:138
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:483)
at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:74)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:277)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:382)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:103)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4650)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5306)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: Unable to load configuration. - bean - jar:file:/C:/Users/John/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/HitPlay/WEB-INF/lib/struts2-rest-plugin-2.3.7.jar!/struts-plugin.xml:36:138
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:71)
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:429)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:471)
... 16 more
Caused by: Unable to load bean: type:org.apache.struts2.rest.handler.ContentTypeHandler class:org.apache.struts2.rest.handler.JsonLibHandler - bean - jar:file:/C:/Users/John/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/HitPlay/WEB-INF/lib/struts2-rest-plugin-2.3.7.jar!/struts-plugin.xml:36:138
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:245)
at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:102)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:215)
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:68)
... 18 more
Caused by: java.lang.NoClassDefFoundError: net/sf/json/JSONArray
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getDeclaredConstructors(Unknown Source)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:235)
... 21 more
Caused by: java.lang.ClassNotFoundException: net.sf.json.JSONArray
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
... 25 more
I have no idea why this is happening. any clues?
You’re missing required libraries, at least the JSON library. This may be because you’re not using Maven or an equivalent.
You can’t just drop a plugin library into your app and expect it to work, plugins have their own dependencies.