Question

我正在为Magnolia 5.5.4开发一个非JCR自定义内容应用程序，我创建了一个这样的容器：

public class ArticlesContainer extends SQLContainer {

    public ArticlesContainer(QueryDelegate delegate) throws SQLException {
        super(delegate);
        // TODO Auto-generated constructor stub
    }
}

和treePresenter，我在这里初始化容器：

public Container initializeContainer() {
        JDBCConnectionPool pool;
        ArticlesContainer container = null;
        try {
            pool = new SimpleJDBCConnectionPool("com.mysql.jdbc.Driver", "jdbc:mysql://localhost:3306/pfeapp", "admindxbIwZL", "HduX7BJJaBAD");
            QueryDelegate tq = new TableQuery("articles", pool);
            container =  new ArticlesContainer(tq);
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return container;
    }

直到现在一切都很好，它完美无缺。问题是，当我尝试创建一个动作时，例如，我添加了这样的动作AddArticleAction：

public class AddArticleAction<T extends AddArticleActionDefinition> extends AbstractAction<T>{

    private ContentConnector contentConnector;

    private EventBus eventBus;

    @Inject
    public AddArticleAction(T definition, @Named(AdmincentralEventBus.NAME)EventBus eventBus) {
        super(definition);
        this.eventBus = eventBus;
        // TODO Auto-generated constructor stub
    }

    @Override
    public void execute() throws ActionExecutionException {
        // TODO Auto-generated method stub

    }

}

当我点击浏览器操作栏中的添加文章链接时，我得到以下异常：

2017-05-20 00：28：22,321错误fo.magnolia.ui.contentapp.browser.BrowserPresenter：发生错误执行动作时[addArticle] info.magnolia.ui.api.action.ActionExecutionException：动作执行行动失败：addArticle at info.magnolia.ui.api.action.AbstractActionExecutor.execute（AbstractActionExecutor.java:64）在 info.magnolia.ui.contentapp.browser.BrowserPresenter.executeAction（BrowserPresenter.java:347）在 info.magnolia.ui.contentapp.browser.BrowserPresenter.onActionbarItemClicked（BrowserPresenter.java:306）在 info.magnolia.ui.actionbar.ActionbarPresenter.onActionbarItemClicked（ActionbarPresenter.java:205）在 info.magnolia.ui.actionbar.ActionbarViewImpl $ 1.actionTrigger（ActionbarViewImpl.java:67） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（未知来源）at sun.reflect.DelegatingMethodAccessorImpl.invoke（未知来源）at java.lang.reflect.Method.invoke（未知来源）at com.vaadin.event.ListenerMethod.receiveEvent（ListenerMethod.java:508）在com.vaadin.event.EventRouter.fireEvent（EventRouter.java:198）at com.vaadin.event.EventRouter.fireEvent（EventRouter.java:161）at com.vaadin.server.AbstractClientConnector.fireEvent（AbstractClientConnector.java:1008）在 info.magnolia.ui.vaadin.actionbar.Actionbar.access $ 000（Actionbar.java:59）在 info.magnolia.ui.vaadin.actionbar.Actionbar $ 1.onActionTriggered（Actionbar.java:72） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（未知来源）at sun.reflect.DelegatingMethodAccessorImpl.invoke（未知来源）at java.lang.reflect.Method.invoke（未知来源）at com.vaadin.server.ServerRpcManager.applyInvocation（ServerRpcManager.java:158）在 com.vaadin.server.ServerRpcManager.applyInvocation（ServerRpcManager.java:118）在 com.vaadin.server.communication.ServerRpcHandler.handleInvocation（ServerRpcHandler.java:437）在 com.vaadin.server.communication.ServerRpcHandler.handleInvocations（ServerRpcHandler.java:408）在 com.vaadin.server.communication.ServerRpcHandler.handleRpc（ServerRpcHandler.java:273）在 com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest（UidlRequestHandler.java:90）在 com.vaadin.server.SynchronizedRequestHandler.handleRequest（SynchronizedRequestHandler.java:41）在 com.vaadin.server.VaadinService.handleRequest（VaadinService.java:1414）在com.vaadin.server.VaadinServlet.service（VaadinServlet.java:365）在 info.magnolia.ui.admincentral.AdmincentralVaadinServlet.service（AdmincentralVaadinServlet.java:131）在javax.servlet.http.HttpServlet.service（HttpServlet.java:742）at info.magnolia.cms.filters.ServletDispatchingFilter.doFilter（ServletDispatchingFilter.java:148）在 info.magnolia.cms.filters.AbstractMgnlFilter.doFilter（AbstractMgnlFilter.java:85）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:81）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:81）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:81）在 info.magnolia.cms.filters.CompositeFilter.doFilter（CompositeFilter.java:65）在 info.magnolia.cms.filters.AbstractMgnlFilter.doFilter（AbstractMgnlFilter.java:85）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.cms.filters.VirtualUriFilter.doFilter（VirtualUriFilter.java:69）在 info.magnolia.cms.filters.AbstractMgnlFilter.doFilter（AbstractMgnlFilter.java:85）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.module.cache.executor.Bypass.processCacheRequest（Bypass.java:58）在 info.magnolia.module.cache.executor.CompositeExecutor.processCacheRequest（CompositeExecutor.java:67）在 info.magnolia.module.cache.filter.CacheFilter.doFilter（CacheFilter.java:220）在 info.magnolia.cms.filters.AbstractMgnlFilter.doFilter（AbstractMgnlFilter.java:85）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.cms.i18n.I18nContentSupportFilter.doFilter（I18nContentSupportFilter.java:74）在 info.magnolia.cms.filters.AbstractMgnlFilter.doFilter（AbstractMgnlFilter.java:85）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.cms.filters.RangeSupportFilter.doFilter（RangeSupportFilter.java:77）在 info.magnolia.cms.filters.AbstractMgnlFilter.doFilter（AbstractMgnlFilter.java:85）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.cms.security.BaseSecurityFilter.doFilter（BaseSecurityFilter.java:57）在 info.magnolia.cms.filters.AbstractMgnlFilter.doFilter（AbstractMgnlFilter.java:85）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:81）在 info.magnolia.cms.security.SecurityCallbackFilter.doFilter（SecurityCallbackFilter.java:84）在 info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter（OncePerRequestAbstractMgnlFilter.java:59）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.cms.security.LogoutFilter.doFilter（LogoutFilter.java:94）在 info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter（OncePerRequestAbstractMgnlFilter.java:59）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.module.site.filters.SiteMergeFilter.doFilter（SiteMergeFilter.java:119）在 info.magnolia.cms.filters.AbstractMgnlFilter.doFilter（AbstractMgnlFilter.java:85）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.cms.filters.MultiChannelFilter.doFilter（MultiChannelFilter.java:83）在 info.magnolia.cms.filters.AbstractMgnlFilter.doFilter（AbstractMgnlFilter.java:85）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.module.cache.filter.GZipFilter.doFilter（GZipFilter.java:73）在 info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter（OncePerRequestAbstractMgnlFilter.java:59）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:81）在 info.magnolia.cms.security.auth.login.LoginFilter.doFilter（LoginFilter.java:127）在 info.magnolia.cms.filters.AbstractMgnlFilter.doFilter（AbstractMgnlFilter.java:85）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:81）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:81）在 info.magnolia.cms.filters.ContentTypeFilter.doFilter（ContentTypeFilter.java:155）在 info.magnolia.cms.filters.AbstractMgnlFilter.doFilter（AbstractMgnlFilter.java:85）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.cms.filters.ContextFilter.doFilter（ContextFilter.java:128）在 info.magnolia.cms.filters.AbstractMgnlFilter.doFilter（AbstractMgnlFilter.java:85）在 info.magnolia.cms.filters.MgnlFilterChain.doFilter（MgnlFilterChain.java:79）在 info.magnolia.cms.filters.CompositeFilter.doFilter（CompositeFilter.java:65）在 info.magnolia.cms.filters.AbstractMgnlFilter.doFilter（AbstractMgnlFilter.java:85）在 info.magnolia.cms.filters.SafeDestroyMgnlFilterWrapper.doFilter（SafeDestroyMgnlFilterWrapper.java:107）在 info.magnolia.cms.filters.MgnlFilterDispatcher.doDispatch（MgnlFilterDispatcher.java:67）在 info.magnolia.cms.filters.MgnlMainFilter.doFilter（MgnlMainFilter.java:108）在 info.magnolia.cms.filters.MgnlMainFilter.doFilter（MgnlMainFilter.java:94）在 org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在 org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在 org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:199）在 org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:96）在 org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:140）在 org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:80）在 org.apache.catalina.valves.AbstractAccessLogValve.invoke（AbstractAccessLogValve.java:624）在 org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:87）在 org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:342）在 org.apache.coyote.http11.Http11Processor.service（Http11Processor.java:498）在 org.apache.coyote.AbstractProcessorLight.process（AbstractProcessorLight.java:66）在 org.apache.coyote.AbstractProtocol $ ConnectionHandler.process（AbstractProtocol.java:796）在 org.apache.tomcat.util.net.NioEndpoint $ SocketProcessor.doRun（NioEndpoint.java:1368）在 org.apache.tomcat.util.net.SocketProcessorBase.run（SocketProcessorBase.java:49） at java.util.concurrent.ThreadPoolExecutor.runWorker（Unknown Source） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（Unknown Source）在 org.apache.tomcat.util.threads.TaskThread $ WrappingRunnable.run（TaskThread.java:61）在java.lang.Thread.run（未知来源）引起： java.lang.NullPointerException at info.magnolia.objectfactory.CandidateParameterResolver.resolveParameter（CandidateParameterResolver.java:78）在 info.magnolia.objectfactory.ObjectManufacturer.resolveParameter（ObjectManufacturer.java:166）在 info.magnolia.objectfactory.ObjectManufacturer.resolveParameters（ObjectManufacturer.java:143）在 info.magnolia.objectfactory.ObjectManufacturer.newInstance（ObjectManufacturer.java:86）在 info.magnolia.objectfactory.guice.GuiceComponentProvider.newInstanceWithParameterResolvers（GuiceComponentProvider.java:121）在 info.magnolia.objectfactory.guice.GuiceComponentProvider.newInstance（GuiceComponentProvider.java:107）在 info.magnolia.ui.api.action.AbstractActionExecutor.createAction（AbstractActionExecutor.java:90）在 info.magnolia.ui.api.action.AbstractActionExecutor.execute（AbstractActionExecutor.java:61） ... 107更多

我真的不明白问题所在。

Answer 1

您在implementationClass中设置为AddArticleActionDefinition的内容是什么？它需要指向AddArticleAction。我怀疑它没有，因此Caused by: java.lang.NullPointerException例外。执行者无法调用您的操作，因为它未设置。

使用sqlcontainer contentContainer的自定义非JCR magnolia内容应用程序，无法将ContentConnector或EventBus注入操作定义

1 个答案: