JavaFx“BorderPane 不是有效类型。”
[英]JavaFx “BorderPane is not a valid type.”
问题描述
I'm having this error while following a tutorial:
我在学习教程时遇到了这个错误：
javafx.fxml.LoadException: BorderPane is not a valid type.
/C:/Users/Eduardo%20Abreu/Documents/Eclipse-Workspace/UnifacsProjeto/bin/projeto/resources/RootLayout.fxml
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2597)
at javafx.fxml.FXMLLoader.createElement(FXMLLoader.java:2774)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2704)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
at projeto.MainApp.initRootLayout(MainApp.java:33)
at projeto.MainApp.start(MainApp.java:24)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$161(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$174(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$172(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$173(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
at java.lang.Thread.run(Thread.java:748)
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$154(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
at projeto.MainApp.showFilmeOverview(MainApp.java:48)
at projeto.MainApp.start(MainApp.java:26)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$161(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$174(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$172(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$173(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
... 1 more
Exception running application projeto.MainApp
Here's my code:这是我的代码：
package projeto;
import java.io.IOException;
import ch.makery.address.MainApp;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
public class MainApp extends Application {
private Stage primaryStage;
private BorderPane rootLayout;
@Override
public void start(Stage primaryStage) {
this.primaryStage = primaryStage;
this.primaryStage.setTitle("CineTudo");
initRootLayout();
showFilmeOverview();
}
public void initRootLayout(){
try {
//Carrega o layout root do arquivo fxml
FXMLLoader loader = new FXMLLoader(MainApp.class.getResource("resources/RootLayout.fxml"));
rootLayout = (BorderPane) loader.load();
Scene cena = new Scene(rootLayout);
primaryStage.setScene(cena);
primaryStage.show();
} catch(IOException e) {
e.printStackTrace();
}
}
public void showFilmeOverview() {
try {
FXMLLoader loader = new FXMLLoader();
loader.setLocation((MainApp.class.getResource("resources/FilmeOverview.fxml")));
AnchorPane filmeOverview = (AnchorPane) loader.load();
rootLayout.setCenter(filmeOverview);
}catch (IOException e){
e.printStackTrace();
}
}
public Stage getPrimaryStage() {
return primaryStage;
}
public static void main(String[] args) {
launch(args);
}
}
Here's the tutorial code:这是教程代码：
package ch.makery.address;
import java.io.IOException;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
public class MainApp extends Application {
private Stage primaryStage;
private BorderPane rootLayout;
@Override
public void start(Stage primaryStage) {
this.primaryStage = primaryStage;
this.primaryStage.setTitle("AddressApp");
initRootLayout();
showPersonOverview();
}
/**
* Initializes the root layout.
*/
public void initRootLayout() {
try {
// Load root layout from fxml file.
FXMLLoader loader = new FXMLLoader();
loader.setLocation(MainApp.class.getResource("view/RootLayout.fxml"));
rootLayout = (BorderPane) loader.load();
// Show the scene containing the root layout.
Scene scene = new Scene(rootLayout);
primaryStage.setScene(scene);
primaryStage.show();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* Shows the person overview inside the root layout.
*/
public void showPersonOverview() {
try {
// Load person overview.
FXMLLoader loader = new FXMLLoader();
loader.setLocation(MainApp.class.getResource("view/PersonOverview.fxml"));
AnchorPane personOverview = (AnchorPane) loader.load();
// Set person overview into the center of root layout.
rootLayout.setCenter(personOverview);
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* Returns the main stage.
* @return
*/
public Stage getPrimaryStage() {
return primaryStage;
}
public static void main(String[] args) {
launch(args);
}
}
I don't have any id's on the Fxml file and the tutorial's one doesn't have it either, i created FilmeOverview.fxml as AnchorPane and RootLayout as BorderPane, I tried changing the position of the method but it doesn't work, does anyone know how to fix this?我在 Fxml 文件上没有任何 id，教程中也没有，我将 FilmeOverview.fxml 创建为 AnchorPane，将 RootLayout 创建为 BorderPane，我尝试更改方法的位置，但它不起作用，是吗有人知道怎么修这个东西吗？
Edit: Here's the FXML file:编辑：这是 FXML 文件：
<?xml version="1.0" encoding="UTF-8"?>
<?import com.jfoenix.controls.JFXButton?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.ButtonBar?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.SplitPane?>
<?import javafx.scene.control.TableColumn?>
<?import javafx.scene.control.TableView?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.ColumnConstraints?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.layout.RowConstraints?>
<?import javafx.scene.text.Font?>
<AnchorPane prefHeight="500.0" prefWidth="800.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1">
<children>
<SplitPane dividerPositions="0.29797979797979796" layoutX="191.0" layoutY="120.0" prefHeight="400.0" prefWidth="600.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<items>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="160.0" prefWidth="100.0">
<children>
<TableView layoutX="-25.0" layoutY="46.0" prefHeight="398.0" prefWidth="175.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<columns>
<TableColumn prefWidth="75.0" text="Filme" />
<TableColumn prefWidth="75.0" text="Sala" />
<TableColumn prefWidth="75.0" text="Categoria" />
</columns>
<columnResizePolicy>
<TableView fx:constant="CONSTRAINED_RESIZE_POLICY" />
</columnResizePolicy>
</TableView>
</children>
</AnchorPane>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="160.0" prefWidth="100.0">
<children>
<Label layoutX="14.0" layoutY="14.0" text="Detalhes do Filme">
<font>
<Font name="Open Sans Light" size="15.0" />
</font>
</Label>
<GridPane layoutX="14.0" layoutY="49.0" prefHeight="268.0" prefWidth="547.0" AnchorPane.leftAnchor="5.0" AnchorPane.rightAnchor="5.0" AnchorPane.topAnchor="49.0">
<columnConstraints>
<ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
<ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
</columnConstraints>
<rowConstraints>
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
</rowConstraints>
<children>
<Label text="Título:">
<font>
<Font size="16.0" />
</font>
<GridPane.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</GridPane.margin>
</Label>
<Label layoutX="20.0" layoutY="17.0" text="Sala:" GridPane.rowIndex="1">
<font>
<Font size="16.0" />
</font>
<GridPane.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</GridPane.margin>
</Label>
<Label layoutX="20.0" layoutY="55.0" text="Categoria:" GridPane.rowIndex="2">
<font>
<Font size="16.0" />
</font>
<GridPane.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</GridPane.margin>
</Label>
<Label text="Diretor:" GridPane.rowIndex="3">
<font>
<Font size="16.0" />
</font>
<GridPane.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</GridPane.margin>
</Label>
<Label text="Duração:" GridPane.rowIndex="4">
<font>
<Font size="16.0" />
</font>
<GridPane.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</GridPane.margin>
</Label>
<Label text="Protagonista:" GridPane.rowIndex="5">
<font>
<Font size="16.0" />
</font>
<GridPane.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</GridPane.margin>
</Label>
<Label text="Classificação:" GridPane.rowIndex="6">
<font>
<Font size="16.0" />
</font>
<GridPane.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</GridPane.margin>
</Label>
<Label text="Label" GridPane.columnIndex="1">
<GridPane.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</GridPane.margin>
<font>
<Font name="Roboto" size="16.0" />
</font>
</Label>
<Label text="Label" GridPane.columnIndex="1" GridPane.rowIndex="1">
<font>
<Font name="Roboto" size="16.0" />
</font>
<GridPane.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</GridPane.margin>
</Label>
<Label text="Label" GridPane.columnIndex="1" GridPane.rowIndex="2">
<font>
<Font name="Roboto" size="16.0" />
</font>
<GridPane.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</GridPane.margin>
</Label>
<Label text="Label" GridPane.columnIndex="1" GridPane.rowIndex="3">
<font>
<Font name="Roboto" size="16.0" />
</font>
<GridPane.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</GridPane.margin>
</Label>
<Label text="Label" GridPane.columnIndex="1" GridPane.rowIndex="4">
<font>
<Font name="Roboto" size="16.0" />
</font>
<GridPane.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</GridPane.margin>
</Label>
<Label text="Label" GridPane.columnIndex="1" GridPane.rowIndex="5">
<font>
<Font name="Roboto" size="16.0" />
</font>
<GridPane.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</GridPane.margin>
</Label>
<Label text="Label" GridPane.columnIndex="1" GridPane.rowIndex="6">
<font>
<Font name="Roboto" size="16.0" />
</font>
<GridPane.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</GridPane.margin>
</Label>
</children>
</GridPane>
<ButtonBar layoutX="276.0" layoutY="425.0" prefHeight="59.0" prefWidth="267.0">
<buttons>
<JFXButton style="-fx-background-color: #00BCD4;" text="Adicionar" />
<JFXButton style="-fx-background-color: #03A9F4;" text="Editar" />
<JFXButton style="-fx-background-color: #F44336;" text="Deletar" />
</buttons>
</ButtonBar>
</children>
</AnchorPane>
</items>
</SplitPane>
</children>
</AnchorPane>
Edit 2: Here's rootLayout.fxml:编辑 2：这是 rootLayout.fxml：
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Menu?>
<?import javafx.scene.control.MenuBar?>
<?import javafx.scene.control.MenuItem?>
<?import javafx.scene.layout.AnchorPane?>
<BorderPane prefHeight="500.0" prefWidth="800.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1">
<children>
<MenuBar layoutY="2.0" prefHeight="25.0" prefWidth="800.0">
<menus>
<Menu mnemonicParsing="false" text="Arquivo">
<items>
<MenuItem mnemonicParsing="false" text="Fechar" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Editar">
<items>
<MenuItem mnemonicParsing="false" text="Deletar" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Ajuda">
<items>
<MenuItem mnemonicParsing="false" text="Sobre" />
</items>
</Menu>
</menus>
</MenuBar>
</children>
</AnchorPane>
This is not a duplicate, changing the import doesn't fix it, i still get这不是重复的，更改导入并不能解决它，我仍然得到
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[31,3]
1 个解决方案
解决方案1
2 已采纳 2018-05-22 17:31:27
You have a couple of issues:你有几个问题：
- The FXML doesn't have an import statement for
javafx.scene.layout.BorderPane.FXML 没有javafx.scene.layout.BorderPane的导入语句。 - Your
rootLayout.fxmlfile is invalid FXML.您的rootLayout.fxml文件是无效的 FXML。 You close the BorderPane element with an AnchorPane tag.您使用 AnchorPane 标记关闭 BorderPane 元素。 - You define the contents of the border pane as children, where they are supposed to be defined by position.您将边框窗格的内容定义为子项，它们应该由位置定义。
Sample valid FXML with the above issues fixed:修复了上述问题的有效 FXML 示例：
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.BorderPane?>
<BorderPane prefHeight="500.0" prefWidth="800.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1">
<top>
<MenuBar layoutY="2.0" prefHeight="25.0" prefWidth="800.0">
<menus>
<Menu mnemonicParsing="false" text="Arquivo">
<items>
<MenuItem mnemonicParsing="false" text="Fechar" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Editar">
<items>
<MenuItem mnemonicParsing="false" text="Deletar" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Ajuda">
<items>
<MenuItem mnemonicParsing="false" text="Sobre" />
</items>
</Menu>
</menus>
</MenuBar>
</top>
</BorderPane>
As an aside, I recommend downloading Gluon SceneBuilder and using that to edit your FXML.顺便说一句，我建议下载Gluon SceneBuilder并使用它来编辑您的 FXML。
Also note, some IDEs, such as IntelliJ , include code completion, type checking and syntax checking which would highlight many of the above errors in your document when you load the file into the IDE.另请注意，某些 IDE（例如IntelliJ ）包括代码完成、类型检查和语法检查，当您将文件加载到 IDE 时，它们会突出显示文档中的许多上述错误。
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.
相关问题
BorderPane javafx的背景 - background to BorderPane javafx
JavaFX Canvas和BorderPane - JavaFX Canvas and BorderPane
Javafx BorderPane强制重叠 - Javafx BorderPane Force Overlap
JavaFX中的Parent与BorderPane - Parent vs BorderPane in JavaFX
重绘BorderPane（javaFx） - Repaint BorderPane (javaFx)
JavaFX Borderpane 与 Splitpane 结合 - JavaFX Borderpane combined with Splitpane
状态字段路径无法解析为有效类型。 JPA查询 - The state field path cannot be resolved to a valid type. JPA query
如何将JavaFX Canvas嵌入BorderPane？ - How to embed JavaFX Canvas into BorderPane?
javafx将父borderpane设置为null - javafx set parent borderpane to null
JavaFX-覆盖BorderPane的居中BackgroundImage - JavaFX - Centering BackgroundImage that covers BorderPane
相关标签