[Seasar-user:15592] 無設定 Struts にて Form 定義でエラー

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無設定StrutsにてFormクラスを作成するとアプリ起動時にエラーが出て
アクションが動作しなくなりました。ログは以下です。

Apache Tomcat/4.1.37
javax.servlet.UnavailableException
    at org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java:880)
    at org.apache.struts.action.ActionServlet.init(ActionServlet.java:336)
    at org.seasar.struts.servlet.S2ActionServlet.init(S2ActionServlet.java:61)
    at javax.servlet.GenericServlet.init(GenericServlet.java:213)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:880)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:768)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3484)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:3710)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:777)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:760)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:538)
    at org.apache.catalina.core.StandardHostDeployer.addChild(StandardHostDeployer.java:667)
    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:324)
    at org.apache.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:216)
    at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:217)
    at org.apache.commons.digester.Rule.end(Rule.java:253)
    at org.apache.commons.digester.Digester.endElement(Digester.java:1222)
    at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
    at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)
    at org.apache.xerces.impl.dtd.XMLDTDValidator.emptyElement(Unknown Source)
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
    at org.apache.xerces.impl.XMLDocumentScannerImpl$ContentDispatcher.scanRootElementHook(Unknown Source)
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
    at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
    at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
    at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
    at org.apache.commons.digester.Digester.parse(Digester.java:1765)
    at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:343)
    at org.apache.catalina.core.StandardHost.install(StandardHost.java:762)
    at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:443)
    at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:377)
    at org.apache.catalina.startup.HostConfig.start(HostConfig.java:808)
    at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:335)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1156)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:697)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1148)
    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:311)
    at org.apache.catalina.core.StandardService.start(StandardService.java:450)
    at org.apache.catalina.core.StandardServer.start(StandardServer.java:2213)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:484)
    at org.apache.catalina.startup.Catalina.execute(Catalina.java:371)
    at org.apache.catalina.startup.Catalina.process(Catalina.java:134)
    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:324)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:151)
    
struts-configには
<plug-in
        className="org.seasar.struts.plugin.AutoStrutsConfigRegisterPlugIn">
        <set-property property="enableJar" value="false" />
        <set-property property="actionClassPattern" value="jp.co.mbl.web.action.(.*).*Action"/>
        <set-property property="formClassPattern" value="jp.co.mbl.web.form.(.*).*Form"/>
</plug-in>
と記述していますが
formClassPatternで指定しているパッケージにXXXXFormといったクラスを作成するとエラーになるようです。
ここにマッチするクラスが無い場合はアプリは正常に起動し、アクションも正常に動作します。

■作成したFormクラス一例
public class ListItemsForm implements Serializable {
    
    public static final String FORM = "name=listItemsForm";
    
    ※以下プロパティ、セッター等
}

何か原因が解りましたらご教授いただけると幸いです。
よろしくお願い致します。







 

 
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