不能'；t将侦听器添加到文本字段javafx

我正在尝试将listener添加到控件中的textfield，但却没有这样做。在使用指定给该特定文本字段的fx:id时，我在控件中找不到textfield的任何选项

sample.fxml

controller.java

import java.io.FileNotFoundException；
导入java.net.URL；
导入java.util.ArrayList；
导入java.util.ResourceBundle；
导入javafx.beans.value.observeValue；
导入javafx.event.ActionEvent；
导入javafx.fxml.fxml；
导入javafx.fxml.Initializable；
导入javafx.scene.control.Button；
导入javafx.scene.control.RadioButton；
导入javafx.scene.control.TextField；
导入javafx.scene.control.ToggleGroup；
导入javafx.scene.layout.ancorpane；
公共类控制器实现可初始化{
@FXML
私有文本字段msg_tb；
@FXML
私有文本字段n_msg_tb；
@FXML
专用按钮复位；
@FXML
私人无线电按钮；
@FXML
私人交换组1；
@FXML
私人无线按钮dr；
@FXML
私人锚烷电子书；
@FXML
私人锚烷dbox；
@FXML
公共文本字段e_key_tb；
@FXML
私有文本字段d_key_tb；
@FXML
无效d_c（动作事件）{
}
@FXML
无效d_c_密钥_tb（ActionEvent事件）{
}
@FXML
作废dr_操作（ActionEvent事件）{
setVisible（true）；
dbox.setDisable（false）；
ebox.setVisible（假）；
ebox.setDisable（true）；
}
@FXML
无效e_at（ActionEvent事件）{
}
@FXML
无效e_c（动作事件）{
}
@FXML
无效e_c_密钥_tb（ActionEvent事件）{
}
@FXML
无效e_nl（动作事件）{
}
@FXML
作废er_动作（动作事件）{
ebox.setVisible（true）；
ebox.setDisable（false）；
dbox.setVisible（false）；
setDisable（true）；
}
@FXML
无效重置（ActionEvent事件）{
}
@凌驾
公共void初始化（URL位置、ResourceBundle资源）{
ArrayList mkey=新的ArrayList（）；
试一试{
莫尔斯负荷（mkey）；
}catch（filenotfounde异常）{
//TODO自动生成的捕捉块
e、 printStackTrace（）；
}
}
公共文本字段getMsg_tb（）{
返回msg_tb；
}
公共无效设置消息\u tb（文本字段消息\u tb）{
this.msg_tb=msg_tb；
}
公共文本字段getN_msg_tb（）{
返回n_msg_tb；
}
公共无效设置n_msg_tb（文本字段n_msg_tb）{
this.n_msg_tb=n_msg_tb；
}
公共按钮getReset_b（）{
返回复位b；
}
公共无效设置重置（按钮重置）{
this.reset_b=reset_b；
}
公共单选按钮getEr（）{
回程电流互感器；
}
公共无效设置器（单选按钮设置器）{
这个,呃,呃,；
}
公共切换组getGroup1（）{
返回组1；
}
公共无效设置组1（切换组组1）{
this.group1=group1；
}
公共单选按钮getDr（）{
返回dr；
}
公共无效setDr（单选按钮dr）{
this.dr=dr；
}
公共主播getEbox（）{
返回电子书；
}
公共无效电子邮箱（AnchorPane电子邮箱）{
this.ebox=ebox；
}
公共主播getDbox（）{
返回dbox；
}
公共无效设置框（锚烷数据库框）{
this.dbox=dbox；
}
公共文本字段getE_key_tb（）{
返回e_key_tb；
}
公共无效设置密钥tb（文本字段密钥tb）{
这是e_key_tb=e_key_tb；
}
公共文本字段getD_key_tb（）{
返回d_key_tb；
}
公共无效设置d_key_tb（文本字段d_key_tb）{
this.d_key_tb=d_key_tb；
}
e_key_tb.textProperty（）.addListener（（ob
<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.RadioButton?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.control.ToggleGroup?>
<?import javafx.scene.effect.Reflection?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.VBox?>
<?import javafx.scene.text.Font?>

<fx:root maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="294.0" prefWidth="883.0" style="-fx-background-color: #000000;" stylesheets="@style.css" type="AnchorPane" xmlns="http://javafx.com/javafx/8.0.141" xmlns:fx="http://javafx.com/fxml/1" fx:controller="controler">
   <children>
      <Label layoutX="28.0" layoutY="55.0" text="Enter Text : " AnchorPane.leftAnchor="28.0">
         <font>
            <Font size="15.0" />
         </font>
      </Label>
      <TextField fx:id="msg_tb" alignment="CENTER" layoutX="117.0" layoutY="52.0" prefHeight="25.0" prefWidth="342.0" style="-fx-background-radius: 10;" stylesheets="@style.css" AnchorPane.leftAnchor="117.0" AnchorPane.rightAnchor="424.0" />
      <TextField fx:id="n_msg_tb" alignment="CENTER" layoutX="117.0" layoutY="93.0" prefHeight="25.0" prefWidth="342.0" style="-fx-background-radius: 10;" stylesheets="@style.css" AnchorPane.leftAnchor="117.0" AnchorPane.rightAnchor="424.0" />
      <Button fx:id="reset_b" alignment="CENTER" layoutX="602.0" layoutY="171.0" mnemonicParsing="false" onAction="#reset" style="-fx-text-fill: #FFFFFF; -fx-background-radius: 20;" stylesheets="@style.css" text="RESET" AnchorPane.rightAnchor="161.0">
         <font>
            <Font name="Calibri Bold" size="31.0" />
         </font>
         <effect>
            <Reflection fraction="0.41" topOffset="0.65" topOpacity="0.73" />
         </effect>
      </Button>
      <VBox layoutX="495.0" layoutY="31.0" prefHeight="169.0" prefWidth="167.0" spacing="3.0" stylesheets="@style.css" AnchorPane.rightAnchor="221.0">
         <children>
            <RadioButton fx:id="er" mnemonicParsing="false" onAction="#er_action" prefHeight="17.0" prefWidth="92.0" stylesheets="@application.css" text="ENCRIPTION" textFill="#797979">
               <toggleGroup>
                  <ToggleGroup fx:id="group1" />
               </toggleGroup>
            </RadioButton>
            <AnchorPane fx:id="ebox" prefHeight="150.0" prefWidth="167.0">
               <children>
                  <Label contentDisplay="RIGHT" graphicTextGap="20.0" layoutX="7.0" layoutY="2.0" prefHeight="25.0" prefWidth="131.0" stylesheets="@application.css" text="NUMBER LETTER">
                     <graphic>
                        <Button minHeight="-Infinity" minWidth="-Infinity" mnemonicParsing="false" onAction="#e_nl" prefHeight="15.0" prefWidth="15.0" text="*">
                           <effect>
                              <Reflection fraction="0.41" topOffset="0.65" topOpacity="0.73" />
                           </effect>
                        </Button>
                     </graphic>
                     <padding>
                        <Insets top="15.0" />
                     </padding>
                  </Label>
                  <Label contentDisplay="RIGHT" graphicTextGap="60.0" layoutX="8.0" layoutY="27.0" prefHeight="25.0" prefWidth="131.0" stylesheets="@application.css" text="AT-BASH">
                     <graphic>
                        <Button graphicTextGap="0.0" minHeight="-Infinity" minWidth="-Infinity" mnemonicParsing="false" onAction="#e_at" prefHeight="15.0" prefWidth="15.0" text="Button">
                           <effect>
                              <Reflection fraction="0.41" topOffset="0.65" topOpacity="0.73" />
                           </effect>
                        </Button>
                     </graphic>
                     <padding>
                        <Insets top="15.0" />
                     </padding>
                  </Label>
                  <Label contentDisplay="RIGHT" graphicTextGap="20.0" layoutX="8.0" layoutY="52.0" prefHeight="25.0" prefWidth="105.0" stylesheets="@style.css" text="CEASER">
                     <graphic>
                        <TextField fx:id="e_key_tb" onAction="#e_c_key_tb" prefHeight="25.0" prefWidth="40.0" promptText="KEY" style="-fx-background-radius: 10;" stylesheets="@style.css" />
                     </graphic>
                     <padding>
                        <Insets top="15.0" />
                     </padding>
                  </Label>
                  <Button alignment="CENTER" disable="true" layoutX="110.0" layoutY="67.0" minHeight="-Infinity" minWidth="-Infinity" mnemonicParsing="false" onAction="#e_c" prefHeight="25.0" prefWidth="40.0" style="-fx-background-radius: 10;" stylesheets="@application.css" text="CEASER" textAlignment="CENTER">
                     <font>
                        <Font name="System Italic" size="8.0" />
                     </font>
                     <effect>
                        <Reflection fraction="0.41" topOffset="0.65" topOpacity="0.73" />
                     </effect>
                  </Button>
               </children>
            </AnchorPane>
         </children>
      </VBox>
      <VBox layoutX="662.0" layoutY="31.0" prefHeight="169.0" prefWidth="167.0" spacing="3.0" stylesheets="@style.css" AnchorPane.rightAnchor="54.0">
         <children>
            <RadioButton fx:id="dr" mnemonicParsing="false" onAction="#dr_action" prefHeight="17.0" prefWidth="98.0" stylesheets="@application.css" text="DECRIPTION" textFill="#797979" toggleGroup="$group1" />
            <AnchorPane fx:id="dbox" prefHeight="150.0" prefWidth="167.0" visible="false">
               <children>
                  <Label contentDisplay="RIGHT" graphicTextGap="20.0" layoutX="7.0" layoutY="2.0" prefHeight="25.0" prefWidth="131.0" stylesheets="@application.css" text="NUMBER LETTER">
                     <graphic>
                        <Button minHeight="-Infinity" minWidth="-Infinity" mnemonicParsing="false" prefHeight="15.0" prefWidth="15.0" text="*">
                           <effect>
                              <Reflection fraction="0.41" topOffset="0.65" topOpacity="0.73" />
                           </effect>
                        </Button>
                     </graphic>
                     <padding>
                        <Insets top="15.0" />
                     </padding>
                  </Label>
                  <Label contentDisplay="RIGHT" graphicTextGap="60.0" layoutX="8.0" layoutY="27.0" prefHeight="25.0" prefWidth="131.0" stylesheets="@application.css" text="AT-BASH">
                     <graphic>
                        <Button graphicTextGap="0.0" minHeight="-Infinity" minWidth="-Infinity" mnemonicParsing="false" prefHeight="15.0" prefWidth="15.0" text="Button">
                           <effect>
                              <Reflection fraction="0.41" topOffset="0.65" topOpacity="0.73" />
                           </effect>
                        </Button>
                     </graphic>
                     <padding>
                        <Insets top="15.0" />
                     </padding>
                  </Label>
                  <Label contentDisplay="RIGHT" graphicTextGap="20.0" layoutX="8.0" layoutY="52.0" prefHeight="25.0" prefWidth="105.0" stylesheets="@style.css" text="CEASER">
                     <graphic>
                        <TextField fx:id="d_key_tb" onAction="#d_c_key_tb" prefHeight="25.0" prefWidth="40.0" promptText="KEY" style="-fx-background-radius: 10;" stylesheets="@style.css" />
                     </graphic>
                     <padding>
                        <Insets top="15.0" />
                     </padding>
                  </Label>
                  <Button disable="true" layoutX="110.0" layoutY="67.0" minHeight="-Infinity" minWidth="-Infinity" mnemonicParsing="false" onAction="#d_c" prefHeight="25.0" prefWidth="40.0" style="-fx-background-radius: 10;" stylesheets="@application.css" text="CEASER" textAlignment="CENTER">
                     <font>
                        <Font name="System Italic" size="8.0" />
                     </font>
                     <effect>
                        <Reflection fraction="0.41" topOffset="0.65" topOpacity="0.73" />
                     </effect>
                  </Button>
               </children>
            </AnchorPane>
         </children>
      </VBox>
   </children>
</fx:root>

import java.io.FileNotFoundException;
import java.net.URL;
import java.util.ArrayList;
import java.util.ResourceBundle;

import javafx.beans.value.ObservableValue;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Button;
import javafx.scene.control.RadioButton;
import javafx.scene.control.TextField;
import javafx.scene.control.ToggleGroup;
import javafx.scene.layout.AnchorPane;

public class controler implements Initializable {

    @FXML
    private TextField msg_tb;

    @FXML
    private TextField n_msg_tb;

    @FXML
    private Button reset_b;

    @FXML
    private RadioButton er;

    @FXML
    private ToggleGroup group1;

    @FXML
    private RadioButton dr;

    @FXML
    private AnchorPane ebox;

    @FXML
    private AnchorPane dbox;

    @FXML
    public TextField e_key_tb;




    @FXML
    private TextField d_key_tb;

    @FXML
    void d_c(ActionEvent event) {

    }

    @FXML
    void d_c_key_tb(ActionEvent event) {

    }

    @FXML
    void dr_action(ActionEvent event) {
        dbox.setVisible(true);
        dbox.setDisable(false);
        ebox.setVisible(false);
        ebox.setDisable(true);
    }

    @FXML
    void e_at(ActionEvent event) {

    }

    @FXML
    void e_c(ActionEvent event) {

    }

    @FXML
    void e_c_key_tb(ActionEvent event) {

    }

    @FXML
    void e_nl(ActionEvent event) {

    }

    @FXML
    void er_action(ActionEvent event) {

        ebox.setVisible(true);
        ebox.setDisable(false);
        dbox.setVisible(false);
        dbox.setDisable(true);


    }

    @FXML
    void reset(ActionEvent event) {

    }

    @Override
    public void initialize(URL location, ResourceBundle resources) {
        ArrayList<morse> mkey = new ArrayList<>();
        try {
            morse.load(mkey);
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

    public TextField getMsg_tb() {
        return msg_tb;
    }

    public void setMsg_tb(TextField msg_tb) {
        this.msg_tb = msg_tb;
    }

    public TextField getN_msg_tb() {
        return n_msg_tb;
    }

    public void setN_msg_tb(TextField n_msg_tb) {
        this.n_msg_tb = n_msg_tb;
    }

    public Button getReset_b() {
        return reset_b;
    }

    public void setReset_b(Button reset_b) {
        this.reset_b = reset_b;
    }

    public RadioButton getEr() {
        return er;
    }

    public void setEr(RadioButton er) {
        this.er = er;
    }

    public ToggleGroup getGroup1() {
        return group1;
    }

    public void setGroup1(ToggleGroup group1) {
        this.group1 = group1;
    }

    public RadioButton getDr() {
        return dr;
    }

    public void setDr(RadioButton dr) {
        this.dr = dr;
    }

    public AnchorPane getEbox() {
        return ebox;
    }

    public void setEbox(AnchorPane ebox) {
        this.ebox = ebox;
    }

    public AnchorPane getDbox() {
        return dbox;
    }

    public void setDbox(AnchorPane dbox) {
        this.dbox = dbox;
    }

    public TextField getE_key_tb() {
        return e_key_tb;
    }

    public void setE_key_tb(TextField e_key_tb) {
        this.e_key_tb = e_key_tb;
    }

    public TextField getD_key_tb() {
        return d_key_tb;
    }

    public void setD_key_tb(TextField d_key_tb) {
        this.d_key_tb = d_key_tb;
    }






     e_key_tb.textProperty().addListener((obs, oldText, newText) -> {
            System.out.println("Text changed from "+ oldText +" to "+newText);

        });


    }
}

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

<?import javafx.scene.layout.HBox?>
<?import javafx.scene.control.TextField?>

<HBox prefHeight="75.0" prefWidth="150.0" alignment="CENTER" 
xmlns="http://javafx.com/javafx/8.0.121" xmlns:fx="http://javafx.com/fxml/1"  fx:controller="tests.Controler">
   <children>
       <TextField fx:id="msg_tb" prefHeight="25.0" prefWidth="100.0" style="-fx-background-radius: 10;" />
   </children>
</HBox>  

import java.net.URL;
import java.util.ResourceBundle;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.TextField;

public class Controler implements Initializable {

    @FXML
    private TextField msg_tb;

    @Override
    public void initialize(URL arg0, ResourceBundle arg1) {
        msg_tb.textProperty().addListener((obs, oldText, newText) -> {
            System.out.println("Text changed from "+ oldText +" to "+newText);
        });
    }
}

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;

public class FxmlMain extends Application {

    @Override
    public void start(Stage primaryStage) throws Exception {
        Pane root = FXMLLoader.load(getClass().getResource("xml/FxmlMain.fxml"));
        primaryStage.setScene(new Scene(root));
        primaryStage.show();
    }

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