在Maven生成的jar中加载fxml

时间：2018-11-15 15:52:23

标签： maven javafx jar fxml

从jar启动我的项目时，我无法加载fxml文件（jar是用maven生成的）。忽略System.outs只是为了快速调试。

我使用以下代码（此代码从类TabPaneTest中调用）：

FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("TabPaneView.fxml"));

这是相应控制器的初始化方法：

@FXML
public void initialize() {
    this.tabPane1.setTabClosingPolicy(TabClosingPolicy.ALL_TABS);
    this.loginTab.setClosable(false);
    this.loginTab.setText("Login");
    FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("../view/ConnectView.fxml"));
    //Funktionierende jar
    //FXMLLoader fxmlLoader = new FXMLLoader(new URL("rsrc:resources/de/statistik_nord/klr/view/EingabeView.fxml"));
    //System.out.println(getClass().getClassLoader().getResourceAsStream("resources/de/statistik_nord/klr/view/EingabeView.fxml"));

    fxmlLoader.setController(new ConnectController());
    Parent root = null;
    //Parent root = FXMLLoader.load(getClass().getResource("view/ConnectView.fxml"));
    try {
        root = (Parent) fxmlLoader.load(); //This is TabPaneController.java:52, which is mentioned in the stacktrace
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    this.loginTab.setContent(root);
    dbc.bind(((ConnectController) fxmlLoader.getController()).getDbcProperty());
    this.dbc.addListener(new ChangeListener<DBConnection>() {
        @Override
        public void changed(ObservableValue<? extends DBConnection> observable, DBConnection oldValue, DBConnection newValue) {
            // TODO Auto-generated method stub
         {
            if(newValue != null) {
                System.out.println(dbc + "new");
                ec = new EingabeController(dbc.getValue());
                changeExistingTab(loginTab, "Eingabe", "../view/EingabeView.fxml", ec, (ActionEvent e) -> {

                    {
                        if (e.getTarget() instanceof Button) {
                            switch(((Button) e.getTarget()).getId()) {
                            case "buttonUebersKTR":
                                openNewTab(new Tab(), "Uebersicht Kostentraeger", "../view/Übersicht_KTRView.fxml", new Uebersicht_KTRController(dbc.getValue(), ec.getChosenPersonal()));
                                break;
                            case "buttonPersonalKTR":
                                openNewTab(new Tab(), "Personalübersicht für: ", "../view/Personal_KTR_UebersView.fxml", new Personal_KTR_UebersController(dbc.getValue(), ec.getChosenKTR()));
                                break;
                            case "buttonUnvollstaendig":
                                openNewTab(new Tab(), "Unvollstaendig", "../view/UnvollstaendigView.fxml", new UnvollstaendigController(dbc.getValue()));
                                break;
                            case "buttonLogOut":
                                dbc.removeListener(this);
                                tabPane1.getTabs().removeIf(tab -> !(tab.getText().equals("Eingabe")));
                                initialize();
                                System.out.println(dbc + "case");
                                break;
                            }
                        } else {
                            System.out.println("Event!!!!");
                        }

                    }

                });
            }
        }



        }

    });

}

罐子中的目录如下：

jar directories jar directories 2

我收到以下错误：

Caused by javafx.fxml.LoadException: File:/....../[...].jar!/de/statistik_nord/klr/TabPaneView.fxml

我还打印了路径并获得了它（当取出罐子时）：

System.out.println(getClass().getResource("TabPaneView.fxml"));
jar:file:/...../[...].jar!/de/statistik_nord_klr/TabPaneView.fxml

从eclipse启动程序工作正常，并且具有基本相同的包装：

eclipse directories

编辑：

Stacktrace：

/* This is sys.out.print output I do myself 
TEEEEEEEEEEEEST
jar:file:/C:/Users/WollscPh/eclipse- workspace/klr_fx_test/target/klr_fx_test-0.0.1-SNAPSHOT.jar!/de/statistik_nord/klr/view/TabPaneView.fxml
TEEEEEEEEEEEEST
*/
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.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
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(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$154(LauncherImpl.java:182)
at java.lang.Thread.run(Unknown Source)
Caused by: javafx.fxml.LoadException: 
file:/C:/Users/WollscPh/eclipse-workspace/klr_fx_test/target/klr_fx_test-0.0.1-SNAPSHOT.jar!/de/statistik_nord/klr/TabPaneView.fxml

at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2571)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
at de.statistik_nord.klr.TabPaneTest.start(TabPaneTest.java:37)
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
Caused by: java.lang.reflect.InvocationTargetException
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.reflect.misc.Trampoline.invoke(Unknown Source)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.reflect.misc.MethodUtil.invoke(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2566)
... 12 more
Caused by: java.lang.IllegalStateException: Location is not set.
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2434)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
at de.statistik_nord.klr.controller.TabPaneController.initialize(TabPaneController.java:52)
... 22 more
Exception running application de.statistik_nord.klr.TabPaneTest

fxml文件（TabPaneView，已加载到TabPaneTest.java主类中）：

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.control.Tab?>
<?import javafx.scene.control.TabPane?>
<?import javafx.scene.layout.BorderPane?>

<BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1">
<center>
</center>
<center>
  <TabPane fx:id="tabPane1" prefHeight="200.0" prefWidth="200.0" tabClosingPolicy="UNAVAILABLE" BorderPane.alignment="CENTER">
    <tabs>
      <Tab fx:id="loginTab" text="Untitled Tab 1" />
    </tabs>
  </TabPane>
</center>
</BorderPane>

fxml文件（ConnectView，这是第二个加载的fxml，它是从TabPaneController的initialize方法加载的）

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.control.Button?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.BorderPane?>

<BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1">
<left>
  <TextField id="text1" fx:id="textField1" prefHeight="48.0" prefWidth="149.0" promptText="User" BorderPane.alignment="CENTER" />
</left>
<right>
  <TextField id="text2" fx:id="textField2" prefHeight="48.0" prefWidth="149.0" promptText="Passwort" BorderPane.alignment="CENTER" />
</right>
<center>
  <Button fx:id="button1" mnemonicParsing="false" text="LogIn" BorderPane.alignment="CENTER" />
</center>
</BorderPane>

以防万一，虽然实际上并没有发生任何事情，但如果Ill也为ConnectView包含了相应的Controller，

@FXML
public void initialize() {
    // TODO Auto-generated method stub
    button1.setOnAction(new EventHandler<ActionEvent>() {
        public void handle(ActionEvent event) {

            dbc.set(new DBConnection(textField1.getText(), textField2.getText()));
        }
    });
}

1 个答案:

答案 0 :(得分：0)

错误是在我使用的相对路径中使用了.. 

FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("../view/ConnectView.fxml"));

它存在于普通文件系统中，但不存在于jar中，这解释了为什么我从eclipse启动它但不能从可执行jar启动时起作用的原因。 解决方案如下：

FXMLLoader fxmlLoader = new FXMLLoader(getClass().getClassLoader().getResource("de/statistik_nord/klr/view/ConnectView.fxml"));

作为参考，ConnectView.fxml的路径是： MyJarName.jar / de / statistik_nord / klar / view / ConnectView.fxml。

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