场景生成器没有重新连接我的Controller类

Question

我正在使用Intelij Idea在JAVAFX中尝试一个简单的项目，因此我遇到了两个问题：

案例1：

当我将sample.fxml和controller.java和main.java放在同一个文件夹src/main/java/fx/:

Parent root = FXMLLoader.load(getClass().getResource("/FX/sample.fxml"));

/opt/java/jdk1.8.0_20/bin/java -Didea.launcher.port=7537 -Didea.launcher.bin.path=/opt/idea-IU-143.381.42/bin -Dfile.encoding=UTF-8 -classpath /opt/java/jdk1.8.0_20/jre/lib/charsets.jar:/opt/java/jdk1.8.0_20/jre/lib/deploy.jar:/opt/java/jdk1.8.0_20/jre/lib/ext/cldrdata.jar:/opt/java/jdk1.8.0_20/jre/lib/ext/dnsns.jar:/opt/java/jdk1.8.0_20/jre/lib/ext/jfxrt.jar:/opt/java/jdk1.8.0_20/jre/lib/ext/localedata.jar:/opt/java/jdk1.8.0_20/jre/lib/ext/nashorn.jar:/opt/java/jdk1.8.0_20/jre/lib/ext/sunec.jar:/opt/java/jdk1.8.0_20/jre/lib/ext/sunjce_provider.jar:/opt/java/jdk1.8.0_20/jre/lib/ext/sunpkcs11.jar:/opt/java/jdk1.8.0_20/jre/lib/ext/zipfs.jar:/opt/java/jdk1.8.0_20/jre/lib/javaws.jar:/opt/java/jdk1.8.0_20/jre/lib/jce.jar:/opt/java/jdk1.8.0_20/jre/lib/jfr.jar:/opt/java/jdk1.8.0_20/jre/lib/jfxswt.jar:/opt/java/jdk1.8.0_20/jre/lib/jsse.jar:/opt/java/jdk1.8.0_20/jre/lib/management-agent.jar:/opt/java/jdk1.8.0_20/jre/lib/plugin.jar:/opt/java/jdk1.8.0_20/jre/lib/resources.jar:/opt/java/jdk1.8.0_20/jre/lib/rt.jar:/home/azb/IdeaProjects/TestMavenFX/target/classes:/opt/idea-IU-143.381.42/lib/idea_rt.jar com.intellij.rt.execution.application.AppMain FX.Main

** (java:7837): WARNING **: Couldn't connect to accessibility bus: Failed to connect to socket /tmp/dbus-MBNrjIF7ES: Connection refused
Exception in Application start method
Exception in thread "main" java.lang.RuntimeException: Exception in Application start method
    at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:875)
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$147(LauncherImpl.java:157)
    at com.sun.javafx.application.LauncherImpl$$Lambda$1/424058530.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException: Location is required.
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3201)
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3169)
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3142)
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3118)
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3098)
    at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3091)
    at FX.Main.start(Main.java:13)
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$153(LauncherImpl.java:821)
    at com.sun.javafx.application.LauncherImpl$$Lambda$55/669200515.run(Unknown Source)
    at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$166(PlatformImpl.java:323)
    at com.sun.javafx.application.PlatformImpl$$Lambda$51/645218408.run(Unknown Source)
    at com.sun.javafx.application.PlatformImpl.lambda$null$164(PlatformImpl.java:292)
    at com.sun.javafx.application.PlatformImpl$$Lambda$53/222734631.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.application.PlatformImpl.lambda$runLater$165(PlatformImpl.java:291)
    at com.sun.javafx.application.PlatformImpl$$Lambda$52/444279218.run(Unknown Source)
    at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
    at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
    at com.sun.glass.ui.gtk.GtkApplication.lambda$null$45(GtkApplication.java:126)
    at com.sun.glass.ui.gtk.GtkApplication$$Lambda$43/1060865646.run(Unknown Source)
    ... 1 more

Process finished with exit code 1

案例2：

当我将sample.fxml放在src/main/resources/fx/文件夹中，并将controller.java和main.java/fx/文件夹中：

1-SceneBuilder找不到Controller.java

谢谢

Answer 1

在fxml文件中定义控制器类：

<AnchorPane xmlns:fx="http://javafx.com/fxml/1" id="GridPane" prefHeight="400.0" prefWidth="600.0" styleClass="mainFxmlClass" fx:controller="yourpackage.yourControllerClass">
   <children>
     ...
   </children>
</AnchorPane>