Ошибка регистрации портлетов во время переноса портлета с 5.2.3 по 6.2.5

Question

Я новичок в жизни. В рамках миграции с 5.2.3 до 7.0.6 GA7. Мы создали проект плагина и начали копировать портлет из более старого в новый проект (т. Е. 7.0.6). Во время развертывания одного портлета в tomcat мы получаем ошибку ниже

ERROR [Refresh Thread: Equinox Container: 30322ae1-8d8b-001a-191f-dda6258b6f01][HotDeployImpl:240] com.liferay.portal.kernel.deploy.hot.HotDeployException: Error registering portlets for 
com.liferay.portal.kernel.deploy.hot.HotDeployException: Error registering portlets for suite
        at com.liferay.portal.kernel.deploy.hot.BaseHotDeployListener.throwHotDeployException(BaseHotDeployListener.java:38)
        at com.liferay.portal.deploy.hot.PortletHotDeployListener.invokeDeploy(PortletHotDeployListener.java:104)
        at com.liferay.portal.deploy.hot.HotDeployImpl.doFireDeployEvent(HotDeployImpl.java:237)
        at com.liferay.portal.deploy.hot.HotDeployImpl.fireDeployEvent(HotDeployImpl.java:104)
        at com.liferay.portal.kernel.deploy.hot.HotDeployUtil.fireDeployEvent(HotDeployUtil.java:28)
        at com.liferay.portal.kernel.servlet.PluginContextListener.fireDeployEvent(PluginContextListener.java:182)
        at com.liferay.portal.kernel.servlet.PluginContextListener.doPortalInit(PluginContextListener.java:172)
        at com.liferay.portal.kernel.util.BasePortalLifecycle.portalInit(BasePortalLifecycle.java:44)
        at com.liferay.portal.kernel.util.PortalLifecycleUtil.register(PortalLifecycleUtil.java:76)
        at com.liferay.portal.kernel.util.PortalLifecycleUtil.register(PortalLifecycleUtil.java:59)
        at com.liferay.portal.kernel.util.BasePortalLifecycle.registerPortalLifecycle(BasePortalLifecycle.java:54)
        at com.liferay.portal.kernel.servlet.PluginContextListener.contextInitialized(PluginContextListener.java:134)
        at com.liferay.portal.osgi.web.wab.extender.internal.adapter.ServletContextListenerExceptionAdapter.contextInitialized(ServletContextListenerExceptionAdapter.java:51)
        at sun.reflect.GeneratedMethodAccessor455.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.eclipse.equinox.http.servlet.internal.registration.ListenerRegistration$EventListenerInvocationHandler.invoke(ListenerRegistration.java:145)
        at com.sun.proxy.$Proxy484.contextInitialized(Unknown Source)
        at org.eclipse.equinox.http.servlet.internal.context.ContextController.doAddListenerRegistration(ContextController.java:357)
        at org.eclipse.equinox.http.servlet.internal.context.ContextController.addListenerRegistration(ContextController.java:310)
        at org.eclipse.equinox.http.servlet.internal.customizer.ContextListenerTrackerCustomizer.addingService(ContextListenerTrackerCustomizer.java:67)
        at org.eclipse.equinox.http.servlet.internal.customizer.ContextListenerTrackerCustomizer.addingService(ContextListenerTrackerCustomizer.java:1)
        at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:941)
        at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:1)
        at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)
        at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:229)
        at org.osgi.util.tracker.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:901)
        at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:109)
        at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:917)
        at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
        at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
        at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:862)
        at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:801)
        at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:127)
        at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:225)
        at org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:464)

Мы обнаружили проблему в классе портлета в портлете. xml. Для справки я упомянул ниже для обоих xml версии

портлет. xml (5.2.3)

<portlet-app version="1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   xsi:schemaLocation="http://java.sun.com/xml/ns/portlet" xmlns="http://java.sun.com/xml/ns/portlet">
  <portlet>
      <portlet-name>EventPortlet</portlet-name>
      <display-name>EventPortlet</display-name>
      <portlet-class>com.controller.web.portlet.impl.EventPortlet</portlet-class>
      <init-param>
        <name>portlet-class</name>
        <value>com.controller.web.portlet.impl.EventPortlet</value>
      </init-param>
      <expiration-cache>0</expiration-cache>
      <supports>
        <mime-type>text/html</mime-type>
        <portlet-mode>VIEW</portlet-mode>
      </supports>
      <portlet-info>
        <title>Dashboard</title>
        <short-title>Dashboard</short-title>
      </portlet-info>
      <portlet-preferences>
      </portlet-preferences>
    </portlet> </portlet-app>

портлет (последняя версия)

<?xml version="1.0"?>
<portlet-app xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd" version="2.0">
    <portlet>
        <portlet-name>EventPortlet</portlet-name>
        <display-name>EventPortlet</display-name>
        <portlet-class>com.controller.web.portlet.impl.EventPortlet</portlet-class>
         <init-param>
            <name>portlet-class</name>
            <value>com.controller.web.portlet.impl.EventPortlet</value>
         </init-param>
        <expiration-cache>0</expiration-cache>
        <supports>
        <mime-type>text/html</mime-type>
        <portlet-mode>VIEW</portlet-mode>
      </supports>
        <portlet-info>
            <title>Student</title>
            <short-title>Student</short-title>
            <keywords>Student</keywords>
        </portlet-info>
        <security-role-ref>
            <role-name>administrator</role-name>
        </security-role-ref>
        <security-role-ref>
            <role-name>guest</role-name>
        </security-role-ref>
        <security-role-ref>
            <role-name>power-user</role-name>
        </security-role-ref>
        <security-role-ref>
            <role-name>user</role-name>
        </security-role-ref>
    </portlet>
</portlet-app>

Поддерживается ли портлет-класс в теге init-param? В более старой версии мы расширили GenericePorlet для класса EventPortlet. Итак, теперь мы перешли на MVCPorlet в классе EventPortlet. Но все равно получаю ошибку. Пожалуйста, помогите в этом.