Question

我一直在尝试在javafx和fxml文件的main方法中的anylayout中添加InlineStyleTextArea和CodeArea。我收到一个线程错误。请尽可能使用示例如何将这些组件添加到javafx布局？如果可能，请使用教程链接。

这是一个简单的代码

public class Main extends Application {

@Override

public void start(Stage primaryStage) {
TextField myTextField = new TextField();
InlineCssTextArea TextArea = new InlineCssTextArea();

  HBox hbox = new HBox();
hbox.getChildren().add(myTextField);
hbox.getChildren().add(TextArea);
HBox.setHgrow(myTextField, Priority.ALWAYS);
HBox.setHgrow(TextArea, Priority.ALWAYS);

Scene scene = new Scene(hbox);
primaryStage.setScene(scene);
primaryStage.show();}

public static void main(String[] args) {
launch(args);


}

}

Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
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 sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(Unknown Source)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$152(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: org/reactfx/value/SuspendableVal
at application.Main.start(Main.java:20)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$159(Unknown Source)
at com.sun.javafx.application.LauncherImpl$$Lambda$53/19776028.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$172(Unknown Source)
at com.sun.javafx.application.PlatformImpl$$Lambda$45/18503843.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$170(Unknown Source)
at com.sun.javafx.application.PlatformImpl$$Lambda$48/3799573.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$171(Unknown Source)
at com.sun.javafx.application.PlatformImpl$$Lambda$46/2180324.run(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$145(Unknown Source)
at com.sun.glass.ui.win.WinApplication$$Lambda$36/3326003.run(Unknown Source)
... 1 more
Caused by: java.lang.ClassNotFoundException: org.reactfx.value.SuspendableVal
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 15 more
Exception running application application.Main

at com.sun.javafx.application.LauncherImpl$$Lambda$50/14845382.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Answer 1

从堆栈跟踪中，看起来Java Runtime无法找到ReactFX库（至少有一个类），它是RichTextFX的依赖项。由于它已经找到了它，它必须找到InlineCssTextArea，因此必须安装RichTextFX库。

如果您正在使用某种依赖关系管理（例如Gradle或Maven），该工具应该为您管理所有依赖关系。

如果您手动管理依赖项（即下载jar文件并将其添加到类路径中），则需要确保同时下载所有相关jar文件，或使用"Fat jar file"。< / p>

如何在布局中添加Richfx

1 个答案: