我只是不明白我做错了什么。一切似乎都没问题，但数据不会在表格中加载。 这是阶段的控制器类：
package application.controllers;
import application.meetings.MeetingData;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.control.*;
import javafx.scene.control.cell.PropertyValueFactory;
import java.net.URL;
import java.util.ResourceBundle;
public class EditMeetingPopUpController {
@FXML // ResourceBundle that was given to the FXMLLoader
private ResourceBundle resources;
@FXML // URL location of the FXML file that was given to the FXMLLoader
private URL location;
@FXML // fx:id="dateAndTimeInformation"
private DatePicker dateAndTimeInformation; // Value injected by FXMLLoader
@FXML // fx:id="hoursInformation"
private ComboBox<String> hoursInformation; // Value injected by FXMLLoader
@FXML // fx:id="minutesInformation"
private ComboBox<String> minutesInformation; // Value injected by FXMLLoader
@FXML // fx:id="placeInformation"
private TextField placeInformation; // Value injected by FXMLLoader
@FXML // fx:id="categoryInformation"
private ComboBox<String> categoryInformation; // Value injected by FXMLLoader
@FXML // fx:id="contactsInformation"
private ComboBox<String> contactsInformation; // Value injected by FXMLLoader
@FXML // fx:id="allSelectedContactsTextArea"
private TextArea allSelectedContactsTextArea; // Value injected by FXMLLoader
@FXML // fx:id="commentInformation"
private TextArea commentInformation; // Value injected by FXMLLoader
// Table variables
@FXML // fx:id="meetingTable"
private TableView<MeetingData> meetingTable; // Value injected by FXMLLoader
@FXML // fx:id="dateAntTimeColumn"
private TableColumn<MeetingData, String> dateAntTimeColumn; // Value injected by FXMLLoader
@FXML // fx:id="placeColumn"
private TableColumn<MeetingData, String> placeColumn; // Value injected by FXMLLoader
@FXML // fx:id="categoryColumn"
private TableColumn<MeetingData, String> categoryColumn; // Value injected by FXMLLoader
@FXML // fx:id="contactsColumn"
private TableColumn<MeetingData, String> contactsColumn; // Value injected by FXMLLoader
@FXML // fx:id="commentsColumn"
private TableColumn<MeetingData, String> commentsColumn; // Value injected by FXMLLoader
@FXML // Add more contactsColumn to contactsColumn list
void addContactToAllContactsTextArea(ActionEvent event) {
}
@FXML
void editMeeting(ActionEvent event) {
}
@FXML
void loadInformationForMeeting(ActionEvent event) {
ObservableList<MeetingData> data = getMeetingData();
this.meetingTable = new TableView<>();
this.meetingTable.setItems(data);
this.placeColumn.setCellValueFactory(new PropertyValueFactory<MeetingData, String>("date"));
this.placeColumn.setCellValueFactory(new PropertyValueFactory<MeetingData, String>("place"));
this.categoryColumn.setCellValueFactory(new PropertyValueFactory<MeetingData, String>("category"));
this.contactsColumn.setCellValueFactory(new PropertyValueFactory<MeetingData, String>("contacts"));
this.commentsColumn.setCellValueFactory(new PropertyValueFactory<MeetingData, String>("comments"));
this.meetingTable.getColumns().add(this.dateAntTimeColumn);
this.meetingTable.getColumns().add(this.placeColumn);
this.meetingTable.getColumns().add(this.categoryColumn);
this.meetingTable.getColumns().add(this.contactsColumn);
this.meetingTable.getColumns().add(this.commentsColumn);
// // TODO: 01-Feb-17 delete this after finish
// for (MeetingData meetingData : data) {
// System.out.println(meetingData.getDate());
// System.out.println(meetingData.getPlace());
// System.out.println(meetingData.getCategory());
// System.out.println(meetingData.getContacts());
// System.out.println(meetingData.getComments());
// System.out.println("----- END -----");
// System.out.println();
// }
}
// get all meetings
public ObservableList<MeetingData> getMeetingData() {
ObservableList<MeetingData> data = FXCollections.observableArrayList();
data.add(new MeetingData("sdzgzrdbf", "sgzsfbs", "EDbfb", "sbdbf", "zbdd"));
data.add(new MeetingData("sEDGdb", "sgzsfbs", "EDbfb", "sbdbf", "zbdd"));
data.add(new MeetingData("sdzgsbfgzrdbf", "sgzsfbs", "EDbfb", "sbdbf", "zbdd"));
data.add(new MeetingData("zsrbd", "sgzsfbs", "EDbfb", "sbdbf", "zbdd"));
data.add(new MeetingData("rbdbdb", "sgzsfbs", "EDbfb", "sbdbf", "zbdd"));
data.add(new MeetingData("rsbdbd", "sgzsfbs", "EDbfb", "sbdbf", "zbdd"));
return data;
}
@FXML // This method is called by the FXMLLoader when initialization is complete
void initialize() {
assert dateAndTimeInformation != null : "fx:id=\"dateAndTimeInformation\" was not injected: check your FXML file 'EditMeetingPopUp.fxml'.";
assert hoursInformation != null : "fx:id=\"hoursInformation\" was not injected: check your FXML file 'EditMeetingPopUp.fxml'.";
assert minutesInformation != null : "fx:id=\"minutesInformation\" was not injected: check your FXML file 'EditMeetingPopUp.fxml'.";
assert placeInformation != null : "fx:id=\"placeInformation\" was not injected: check your FXML file 'EditMeetingPopUp.fxml'.";
assert categoryInformation != null : "fx:id=\"categoryInformation\" was not injected: check your FXML file 'EditMeetingPopUp.fxml'.";
assert contactsInformation != null : "fx:id=\"contactsInformation\" was not injected: check your FXML file 'EditMeetingPopUp.fxml'.";
assert allSelectedContactsTextArea != null : "fx:id=\"allSelectedContactsTextArea\" was not injected: check your FXML file 'EditMeetingPopUp.fxml'.";
assert commentInformation != null : "fx:id=\"commentInformation\" was not injected: check your FXML file 'EditMeetingPopUp.fxml'.";
assert meetingTable != null : "fx:id=\"meetingTable\" was not injected: check your FXML file 'EditMeetingPopUp.fxml'.";
assert dateAntTimeColumn != null : "fx:id=\"dateAntTimeColumn\" was not injected: check your FXML file 'EditMeetingPopUp.fxml'.";
assert placeColumn != null : "fx:id=\"placeColumn\" was not injected: check your FXML file 'EditMeetingPopUp.fxml'.";
assert categoryColumn != null : "fx:id=\"categoryColumn\" was not injected: check your FXML file 'EditMeetingPopUp.fxml'.";
assert contactsColumn != null : "fx:id=\"contactsColumn\" was not injected: check your FXML file 'EditMeetingPopUp.fxml'.";
assert commentsColumn != null : "fx:id=\"commentsColumn\" was not injected: check your FXML file 'EditMeetingPopUp.fxml'.";
}
}
这是数据类：
package application.meetings;
public class MeetingData {
// Fields
private String date;
private String place;
private String category;
private String contacts;
private String comments;
// Constructors
public MeetingData(String date, String place, String category, String contacts, String comments) {
this.date = date;
this.place = place;
this.category = category;
this.contacts = contacts;
this.comments = comments;
}
// Setters
public void setDate(String date) {
this.date = date;
}
public void setPlace(String place) {
this.place = place;
}
public void setCategory(String category) {
this.category = category;
}
public void setContacts(String contacts) {
this.contacts = contacts;
}
public void setComments(String comments) {
this.comments = comments;
}
// Getters
public String getDate() {
return date;
}
public String getPlace() {
return place;
}
public String getCategory() {
return category;
}
public String getContacts() {
return contacts;
}
public String getComments() {
return comments;
}
}
最后是FXML文件：
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.geometry.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.control.cell.PropertyValueFactory?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.text.Font?>
<BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="450.0" prefWidth="1000.0" xmlns="http://javafx.com/javafx/8.0.60" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.controllers.EditMeetingPopUpController">
<bottom>
<HBox alignment="CENTER_RIGHT" BorderPane.alignment="CENTER">
<children>
<Button mnemonicParsing="false" onAction="#loadInformationForMeeting" text="Зареди информация">
<HBox.margin>
<Insets right="10.0" />
</HBox.margin>
</Button>
<Button defaultButton="true" mnemonicParsing="false" onAction="#editMeeting" prefWidth="80.0" text="Редактирай">
<HBox.margin>
<Insets />
</HBox.margin></Button>
</children>
<BorderPane.margin>
<Insets />
</BorderPane.margin>
</HBox>
</bottom>
<center>
<VBox alignment="CENTER">
<children>
<HBox alignment="CENTER_LEFT">
<children>
<Label prefWidth="70.0" text="Дата" />
<DatePicker fx:id="dateAndTimeInformation" prefWidth="220.0" promptText="Дата" showWeekNumbers="true">
<HBox.margin>
<Insets left="20.0" />
</HBox.margin>
<tooltip>
<Tooltip text="Полето е задължително" />
</tooltip>
</DatePicker>
</children>
<VBox.margin>
<Insets bottom="10.0" />
</VBox.margin>
</HBox>
<HBox alignment="CENTER_LEFT">
<children>
<Label prefWidth="70.0" text="Час" />
<ComboBox fx:id="hoursInformation" prefWidth="70.0">
<HBox.margin>
<Insets left="20.0" right="5.0" />
</HBox.margin>
<tooltip>
<Tooltip text="Полето е задължително" />
</tooltip>
</ComboBox>
<Label text="часa">
<HBox.margin>
<Insets right="20.0" />
</HBox.margin>
</Label>
<ComboBox fx:id="minutesInformation" prefWidth="70.0">
<HBox.margin>
<Insets right="5.0" />
</HBox.margin>
<tooltip>
<Tooltip text="Полето е задължително" />
</tooltip>
</ComboBox>
<Label text="мин.">
<HBox.margin>
<Insets />
</HBox.margin>
</Label>
</children>
<VBox.margin>
<Insets bottom="10.0" />
</VBox.margin>
</HBox>
<HBox alignment="CENTER_LEFT" layoutX="10.0" layoutY="218.0">
<children>
<Label prefWidth="70.0" text="Място" />
<TextField fx:id="placeInformation" prefWidth="220.0" promptText="Място на срещата">
<HBox.margin>
<Insets left="20.0" />
</HBox.margin>
</TextField>
</children>
<VBox.margin>
<Insets bottom="10.0" />
</VBox.margin>
</HBox>
<HBox alignment="CENTER_LEFT" layoutX="10.0" layoutY="253.0">
<children>
<Label prefWidth="70.0" text="Категория" />
<ComboBox fx:id="categoryInformation" prefWidth="220.0" promptText="Изберете категория">
<HBox.margin>
<Insets left="20.0" />
</HBox.margin>
</ComboBox>
</children>
<VBox.margin>
<Insets bottom="10.0" />
</VBox.margin>
</HBox>
<HBox alignment="CENTER_LEFT" layoutX="10.0" layoutY="240.0">
<children>
<Label prefWidth="70.0" text="Участници" />
<ComboBox fx:id="contactsInformation" onAction="#addContactToAllContactsTextArea" prefWidth="220.0" promptText="Изберете участници">
<HBox.margin>
<Insets left="20.0" />
</HBox.margin>
<tooltip>
<Tooltip text="Полето е задължително" />
</tooltip>
</ComboBox>
</children>
<VBox.margin>
<Insets bottom="10.0" />
</VBox.margin>
</HBox>
<HBox>
<children>
<Pane prefHeight="100.0" prefWidth="70.0" />
<TextArea fx:id="allSelectedContactsTextArea" editable="false" prefHeight="100.0" prefWidth="220.0" promptText="Участници в срещата">
<HBox.margin>
<Insets left="20.0" />
</HBox.margin>
</TextArea>
</children>
<VBox.margin>
<Insets bottom="10.0" />
</VBox.margin>
</HBox>
<HBox alignment="CENTER_LEFT" layoutX="10.0" layoutY="293.0">
<children>
<Label alignment="TOP_LEFT" prefHeight="100.0" prefWidth="70.0" text="Коментар" />
<TextArea fx:id="commentInformation" prefHeight="100.0" prefWidth="220.0" promptText="Въведете коментар">
<HBox.margin>
<Insets bottom="10.0" left="20.0" />
</HBox.margin>
<tooltip>
<Tooltip text="Полето е задължително" />
</tooltip>
</TextArea>
</children>
<VBox.margin>
<Insets />
</VBox.margin>
</HBox>
</children>
</VBox>
</center>
<left>
<VBox BorderPane.alignment="CENTER">
<BorderPane.margin>
<Insets />
</BorderPane.margin>
</VBox>
</left>
<padding>
<Insets bottom="20.0" left="20.0" right="20.0" top="20.0" />
</padding>
<top>
<Label alignment="CENTER" prefWidth="600.0" text="Моля изберете среща за редактиране">
<font>
<Font name="System Bold" size="14.0" />
</font>
<BorderPane.margin>
<Insets bottom="10.0" left="360.0" />
</BorderPane.margin>
</Label>
</top>
<right>
<TableView fx:id="meetingTable" editable="true" prefWidth="600.0" BorderPane.alignment="CENTER">
<columns>
<TableColumn fx:id="dateAntTimeColumn" prefWidth="75.0" text="Дата и час" >
<cellValueFactory>
<PropertyValueFactory property="date" />
</cellValueFactory>
</TableColumn>
<TableColumn fx:id="placeColumn" prefWidth="75.0" text="Място" >
<cellValueFactory>
<PropertyValueFactory property="place" />
</cellValueFactory>
</TableColumn>
<TableColumn fx:id="categoryColumn" prefWidth="75.0" text="Категория" >
<cellValueFactory>
<PropertyValueFactory property="category" />
</cellValueFactory>
</TableColumn>
<TableColumn fx:id="contactsColumn" prefWidth="75.0" text="Участници" >
<cellValueFactory>
<PropertyValueFactory property="contacts" />
</cellValueFactory>
</TableColumn>
<TableColumn fx:id="commentsColumn" prefWidth="114.0" text="Коментар" >
<cellValueFactory>
<PropertyValueFactory property="comments" />
</cellValueFactory>
</TableColumn>
</columns>
<BorderPane.margin>
<Insets bottom="10.0" />
</BorderPane.margin>
<columnResizePolicy>
<TableView fx:constant="CONSTRAINED_RESIZE_POLICY" />
</columnResizePolicy>
</TableView>
</right>
</BorderPane>
如果你能帮助我并解释错误在哪里，我将非常感激。
答案 0 :(得分：1)
首先，您的loadInformationforMeeting()方法会创建新 TableView，向其添加数据，重新配置表列（使用他们已有的相同配置...）和将表列添加到新表中。
但是，由于新表未放置在UI中，因此您永远不会看到数据。无需创建新表。
其次，如果您使用现有表（由FXML文件定义的表），它已经附加了列，并且这些列已经具有单元值工厂。因此，您不应该再次将列添加到表中，也不需要重复列的配置。
你需要的只是
@FXML
void loadInformationForMeeting(ActionEvent event) {
ObservableList<MeetingData> data = getMeetingData();
this.meetingTable.setItems(data);
}