意外令牌'＆lt;'尝试将JQuery注入JavaFx WebView时

Question

基本上我需要以字符串的形式获取数据（与问题无关）并通过Jquery将其附加到JavaFx WebView中。我在这个链接中找到了如何嵌入Jquery并将jquery函数调用到webview：https://community.oracle.com/message/10446280?tstart=1。'

解释代码： 我在一个eclipse rcp项目中工作，其中主视图部分是一个容纳webview的javafx场景的容器。 Web引擎加载页面。下面的代码，抓取视图，获取场景，然后获取webview。 EditorPart抓取当前活动编辑器的内容（最终将注入到webview中）。现在我只有一些临时代码用于测试。可以在链接中更好地解释ExecuteJquery。

守则：

HandlerUtil.getActiveWorkbenchWindow(event).getActivePage().showView("com.interpro.emmeclipse.views.PageBuilderPart");

                FXSceneProvider view = (FXSceneProvider) page.findView("com.interpro.emmeclipse.views.PageBuilderPart");
                Scene scene = (Scene) view.getScene();
                AnchorPane node = (AnchorPane)scene.getRoot();
                WebView webview = (WebView) node.getChildren().get(0);
                final WebEngine engine = webview.getEngine();



                final IEditorPart activeEditor = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActiveEditor();
                if (activeEditor != null) {
                    final IDocument doc = (IDocument) activeEditor.getAdapter(IDocument.class);
                    if(doc != null){
                        System.out.println(doc.get());
                        engine.documentProperty().addListener(new ChangeListener<Document>() {
                            @Override public void changed(ObservableValue<? extends Document> prop, Document oldDoc, Document newDoc) {
                              executejQuery(
                                engine, 
                                "$(\"#content\").append(<div class='ui-statusbar'><h5 class='ui-title'>Test</h5></div>);" 
                              );
                            }
                          });
                    }
                }

/**
   * Executes a script which may reference jQuery function on a document.
   * Checks if the document loaded in a webEngine has a version of jQuery corresponding to 
   * the minimum required version loaded, and, if not, then loads jQuery into the document 
   * from the default JQUERY_LOCATION.
   * @param engine the webView engine to be used.
   * @Param jQueryLocation the location of the jQuery script to be executed.
   * @param minVersion the minimum version of jQuery which needs to be included in the document.
   * @param script provided javascript script string (which may include use of jQuery functions on the document).
   * @return the result of the script execution.
   */ 
  private static Object executejQuery(final WebEngine engine, String minVersion, String jQueryLocation, String script) {
    return engine.executeScript(
      "(function(window, document, version, callback) { "
        + "var j, d;"
        + "var loaded = false;"
        + "if (!(j = window.jQuery) || version > j.fn.jquery || callback(j, loaded)) {"
        + "  var script = document.createElement(\"script\");"
        + "  script.type = \"text/javascript\";"
        + "  script.src = \"" + jQueryLocation + "\";"
        + "  script.onload = script.onreadystatechange = function() {"
        + "    if (!loaded && (!(d = this.readyState) || d == \"loaded\" || d == \"complete\")) {"
        + "      callback((j = window.jQuery).noConflict(1), loaded = true);"
        + "      j(script).remove();"
        + "    }"
        + "  };"
        + "  document.documentElement.childNodes[0].appendChild(script) "
        + "} "
      + "})(window, document, \"" + minVersion + "\", function($, jquery_loaded) {" + script + "});"
    );
  }

  private static Object executejQuery(final WebEngine engine, String minVersion, String script) {
    return executejQuery(engine, DEFAULT_JQUERY_MIN_VERSION, JQUERY_LOCATION, script);
  }

  private Object executejQuery(final WebEngine engine, String script) {
    return executejQuery(engine, DEFAULT_JQUERY_MIN_VERSION, script);
  }

堆栈跟踪：

netscape.javascript.JSException: SyntaxError: Unexpected token '<'
at com.sun.webpane.platform.WebPage.twkExecuteScript(Native Method)
at com.sun.webpane.platform.WebPage.executeScript(Unknown Source)
at javafx.scene.web.WebEngine.executeScript(Unknown Source)
at com.interpro.emmeclipse.commands.OpenPageBuilder.executejQuery(OpenPageBuilder.java:102)
at com.interpro.emmeclipse.commands.OpenPageBuilder.executejQuery(OpenPageBuilder.java:123)
at com.interpro.emmeclipse.commands.OpenPageBuilder.executejQuery(OpenPageBuilder.java:127)
at com.interpro.emmeclipse.commands.OpenPageBuilder.access$0(OpenPageBuilder.java:126)
at com.interpro.emmeclipse.commands.OpenPageBuilder$1.changed(OpenPageBuilder.java:69)
at com.interpro.emmeclipse.commands.OpenPageBuilder$1.changed(OpenPageBuilder.java:1)
at com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(Unknown Source)
at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(Unknown Source)
at javafx.beans.property.ReadOnlyObjectPropertyBase.fireValueChangedEvent(Unknown Source)
at javafx.scene.web.WebEngine$DocumentProperty.invalidate(Unknown Source)
at javafx.scene.web.WebEngine$DocumentProperty.access$300(Unknown Source)
at javafx.scene.web.WebEngine$LoadWorker.dispatchLoadEvent(Unknown Source)
at javafx.scene.web.WebEngine$LoadWorker.access$600(Unknown Source)
at javafx.scene.web.WebEngine$PageLoadListener.dispatchLoadEvent(Unknown Source)
at com.sun.webpane.platform.WebPage.fireLoadEvent(Unknown Source)
at com.sun.webpane.platform.WebPage.fwkFireLoadEvent(Unknown Source)
at com.sun.webpane.webkit.network.URLLoader.twkDidFinishLoading(Native Method)
at com.sun.webpane.webkit.network.URLLoader.access$1300(Unknown Source)
at com.sun.webpane.webkit.network.URLLoader$6.run(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2546)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3756)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1053)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:942)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:86)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:588)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)

线程“JavaFX应用程序线程”中的异常

Answer 1

我认为由于缺少引号，下一行会产生错误：

"$(\"#content\").append(<div class='ui-statusbar'><h5 class='ui-title'>Test</h5></div>);" 

尝试

"$(\"#content\").append(\"<div class='ui-statusbar'><h5 class='ui-title'>Test</h5></div>\");"