JavaFX：多个控制器和Fxml文件

Question

我试图了解控制器之间的连接是如何工作的。我写了一个基本的程序，但是，不要正确补充。我发现它是初始化函数 - 如果我同时评论

missionController.initialize(this);
loggerController.initialize(this);

错误消失

package controllers;

import javafx.fxml.FXML;
import javafx.scene.control.TextArea;

public class MainController {

    @FXML private MissionsTabController missionController;
    @FXML private LoggerTabController loggerController;

    public TextArea getLog()
    {
        return missionController.getTxtArea();

    }

    public void initialize()
    {
        System.out.println("System started");
        missionController.initialize(this);
        loggerController.initialize(this);
    }

}

以下是来自其他控件的两个初始化函数：

LoggerTabController：

public void initialize(MainController mainController) { 
    this.mainController = mainController;

}

MissionsTabController：

public void initialize(MainController mainController) { 
    ListView<String> list = new ListView<String>();
    ObservableList<String> items =FXCollections.observableArrayList (
        "Apollo", "DDAY", "Tomorrow", "Yesterday");
    list.setItems(items); 
    this.mainController=mainController;
}

你知道它为什么不起作用吗？（？

以下是发生错误的部分：

javafx.fxml.LoadException: 
/E:/WorkSpace/NASA/bin/view/MainFXML.fxml

at javafx.fxml.FXMLLoader.constructLoadException(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)
at javafx.fxml.FXMLLoader.load(Unknown Source)

以下是您询问的Main.fxml：

<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.geometry.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.AnchorPane?>

<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity"   minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="controllers.MainController">
   <children>
      <TabPane layoutX="14.0" layoutY="27.0" prefHeight="400.0" prefWidth="600.0" tabClosingPolicy="UNAVAILABLE" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
        <tabs>
          <Tab text="NASA Missions">
           <content>
              <fx:include fx:id="missionsTab" source="MissionsTab.fxml" />
           </content></Tab>
      <Tab text="Logger">
           <content>
              <fx:include fx:id="loggerTab" source="LoggerTab.fxml" />
           </content></Tab>
    </tabs>
  </TabPane>
   </children>
</AnchorPane>