org.apache.wicket.markup.MarkupNotFoundException：未找到组件的标记：[TreeTableItem [组件 id = 0]]答案

【问题标题】：org.apache.wicket.markup.MarkupNotFoundException: Markup not found for Component: [TreeTableItem [Component id = 0]]org.apache.wicket.markup.MarkupNotFoundException：未找到组件的标记：[TreeTableItem [组件 id = 0]]
【发布时间】：2020-11-02 20:38:26
【问题描述】：

将 Wicket 框架从 6.x 升级到 8.x 后，我遇到了以下错误。我更新了以下依赖项以将弃用的 TreeTable 代码保留在 wicket 8.x 中。

<dependency>
    <groupId>org.wicketstuff</groupId>
    <artifactId>wicket15-tree</artifactId>
    <version>8.0.0</version>
</dependency>

@SuppressWarnings({ "deprecation" })
private void myTreePage() {
    TreeTable myTestTree = new TreeTable("myTestTreeTable", new DefaultTreeModel(myTestRootNode), cols);
    statusImport();
    myTestTree.setRootLess(true);
    myTestTree.setOutputMarkupId(true);
    addOrReplace(myTestTree);
}




<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
   <html xmlns="http://www.w3.org/1999/xhtml" xmlns:wicket="http://wicket.apache.org/dtds.data/wicket-xhtml1.4-strict.dtd" xml:lang="en" lang="en">
    <body>
        <wicket:extend>
            <div class="statusMsg"><span wicket:id="runIds"></span></div>
            <div class="query_table_header"><label>Import Table</label></div>
            <div wicket:id="myTestTreeTable"></div>
            <form wicket:id="form">
                <div wicket:id="countFilter">
                     <div class="query_table_header"><label>status</label></div>
                </div>
                <div><label>Entity: </label> <select wicket:id="selectEntity"/> <label>Status: </label> <select wicket:id="selectStatus"/></div>
            <input type="submit" value="select" wicket:id="select"/> <input type="submit" wicket:id="bucket" value="Start Reprocessing" />
            </form>
        </wicket:extend>
    </body>
</html>

我发现如果我删除标签，那么页面加载时不会出现任何错误。我认为这里的问题在于标签放置或标签定义。

错误 |发生异常： org.apache.wicket.markup.MarkupNotFoundException：未找到组件的标记：[TreeTableItem [组件 id = 0]] 在 org.apache.wicket.Component.internalRender(Component.java:2267) 在 org.apache.wicket.Component.render(Component.java:2227) 在 org.apache.wicket.extensions.markup.html.tree.table.MiddleColumnsView.onRender(MiddleColumnsView.java:189) 在 org.apache.wicket.Component.internalRender(Component.java:2296) 在 org.apache.wicket.Component.render(Component.java:2227) 在 org.apache.wicket.MarkupContainer.renderNext（MarkupContainer.java:1454）在 org.apache.wicket.MarkupContainer.renderAll（MarkupContainer.java:1654）在 org.apache.wicket.MarkupContainer.renderComponentTagBody（MarkupContainer.java:1629）在 org.apache.wicket.MarkupContainer.renderAssociatedMarkup（MarkupContainer.java:798）在 org.apache.wicket.markup.html.panel.AssociatedMarkupSourcingStrategy.renderAssociatedMarkup（AssociatedMarkupSourcingStrategy.java:77）在 org.apache.wicket.markup.html.panel.PanelMarkupSourcingStrategy.onComponentTagBody（PanelMarkupSourcingStrategy.java:112）在 org.apache.wicket.Component.internalRenderComponent(Component.java:2491) 在 org.apache.wicket.MarkupContainer.onRender（MarkupContainer.java:1593）在 org.apache.wicket.Component.internalRender(Component.java:2296) 在 org.apache.wicket.Component.render(Component.java:2227) 在 org.apache.wicket.MarkupContainer.renderNext（MarkupContainer.java:1454）在 org.apache.wicket.MarkupContainer.renderAll（MarkupContainer.java:1654）在 org.apache.wicket.Page.onRender（Page.java:858）在 org.apache.wicket.markup.html.WebPage.onRender(WebPage.java:126) 在 org.apache.wicket.Component.internalRender(Component.java:2296) 在 org.apache.wicket.Component.render(Component.java:2227) 在 org.apache.wicket.Page.renderPage(Page.java:998) 在 org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:124) 在 org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:236) 在 org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:202) 在 org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:914) 在 org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65) 在 org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:282) 在 org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:253) 在 org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221) 在 org.apache.wicket.protocol.http.WicketFilter.processRequestCycle（WicketFilter.java:275）在 org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206) 在 org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299) 在 org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) 在 org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 在 org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) 在 org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) 在 org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) 在 org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) 在 org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) 在 org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) 在 org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) 在 org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) 在 org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) 在 org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) 在 org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158) 在 org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) 在 org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) 在 org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) 在 org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) 在 org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) 在 org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilterInternal(BasicAuthenticationFilter.java:204) 在 org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) 在 org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) 在 org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) 在 org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) 在 org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) 在 org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) 在 org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) 在 org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) 在 org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) 在 org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) 在 org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) 在 org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) 在 org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) 在 org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) 在 org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) 在 org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) 在 org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 在 org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:199）在 org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:96）在 org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:543）在 org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:139）在 org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:81）在 org.apache.catalina.valves.AbstractAccessLogValve.invoke（AbstractAccessLogValve.java:688）在 org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:87）在 org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:343）在 org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:615) 在 org.apache.coyote.AbstractProcessorLight.process（AbstractProcessorLight.java:65）在 org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:818) 在 org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1623) 在 org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) 在 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 在 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 在 org.apache.tomcat.util.threads.TaskThread$WrappingRunn

【问题讨论】：

您现在使用哪个版本的 wicket15-tree ？应该是 8.0.0
是的@martin-g 使用这个版本“8.0.0”但仍然得到这个错误。
任何人都可以就这个问题提出任何解决方案，它可以帮助我解决我当前在应用程序中的问题。
请在 GitHub 上创建一个演示项目，我们可以看看！
嗨@martin-g，根据我的发现问题与这个检票口ID“myTestTreeTable”的标签有关。我在问题中提到了 HTML 代码。如果我从 HTML 页面中删除此 ID，我可以加载页面而不会出现任何错误。请让我知道它是否有助于解决此问题。

标签： java spring wicket wicket-8

【解决方案1】：

将 TreeTable 类替换为 TableTree 类后，我解决了异常。

请参考以下代码：

    private final DefaultMutableTreeNode rootNode = new DefaultMutableTreeNode("<root>");
DefaultTreeModel treeModel = new DefaultTreeModel(rootNode);

        ITreeProvider<DefaultMutableTreeNode> modelProvider = new TreeModelProvider<DefaultMutableTreeNode>(treeModel, false) {
            private static final long serialVersionUID = 1L;
            @Override
            public IModel<DefaultMutableTreeNode> model(DefaultMutableTreeNode object) {
                return Model.of(object);
            }
        };
        
        TableTree<DefaultMutableTreeNode, String> myTestTree = new TableTree<DefaultMutableTreeNode, String>("myTestTreeTable", createColumns(), modelProvider, Long.MAX_VALUE) {
            private static final long serialVersionUID = 1L;
            @Override
            protected Component newContentComponent(String id, IModel<DefaultMutableTreeNode> model) {
                //return new CheckedFolder<DefaultMutableTreeNode>(id, this, model);
                return new Folder<DefaultMutableTreeNode>(id, this, model);
            }
        };
        
        //myTestTree.getTable().addTopToolbar(new HeadersToolbar<>(myTestTree.getTable(), null));
        //myTestTree.getTable().addBottomToolbar(new NoRecordsToolbar(myTestTree.getTable()));
        myTestTree.setOutputMarkupId(true);
        myTestTree.add(new WindowsTheme());
        //myTestTree.setItemReuseStrategy(new ReuseIfModelsEqualStrategy());
        //myTestTree.getTable().add(AttributeModifier.replace("class", "table table-striped table-condensed"));
        myTestTree.getTable().add(AttributeModifier.replace("style", "width: 100%; background-color:white;"));
        addOrReplace(myTestTree);

树表日期显示完美，但表列标题的名称未显示在页面中。请参考列创建代码。

    private List<? extends IColumn<DefaultMutableTreeNode, String>> createColumns() {
    columns.add(new TreeColumn<>(new Model("Tree"), "obj.text"));
    columns.add(new PropertyColumn<>(new Model("FileStatus"), "FileStatus", "obj.fileStatus"));
    columns.add(new PropertyColumn<>(new Model("StartDate"), "StartDate", "obj.startDate"));
    columns.add(new PropertyColumn<>(new Model("LastDate"), "LastDate", "obj.lastDate"));
    columns.add(new PropertyColumn<>(new Model("Count"), "Count", "obj.count"));
    return columns;
}

【讨论】：

嗨，我可以毫无问题地显示树形表，但列的标题仍然无法显示。列名称为“Tree”、“FileStatus”、“StartDate”、“LastDate”、“Count”。谁能帮我解决显示这些标题的问题？