JavaFX：数据未显示在 TableView 中
[英]JavaFX: data doesn't show up in TableView
问题描述
我试图更多地了解 java 并且我陷入了 FX 问题。 我有一个简单的“创建和对象”，它将显示在 TableView 中。 除了它没有。 我已经尝试解决问题，但仍然没有成功。 我只想创建一个 object (CakeRequest)，当我单击按钮时，请求会显示在 TableView 中。
HelloApplication.java
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.stage.Stage;
import java.io.IOException;
public class HelloApplication extends Application {
@Override
public void start(Stage stage) throws IOException {
FXMLLoader fxmlLoader = new FXMLLoader(HelloApplication.class.getResource("hello-view.fxml"));
Scene scene = new Scene(fxmlLoader.load(), 990, 600);
stage.setTitle("Cake Request Simulator and all that! Tell your friends!");
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch();
}
}
HelloController.Java
package com.example.__fx__homeassignment;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.control.*;
import Domain.*;
import Repository.*;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import java.net.URL;
import java.util.ResourceBundle;
public class HelloController {
@FXML
private TextField errorreport;
@FXML
private TextField errorreportform;
@FXML
private TextField field_cakedesign;
@FXML
private TextField field_cakeflavour;
@FXML
private TextField field_cakemodel;
@FXML
private DatePicker field_date;
@FXML
private TextField field_employee;
@FXML
private TextField field_formID;
@FXML
private TextField field_formcakeID;
@FXML
private TextField field_id;
@FXML
private TextField field_owneradress;
@FXML
private TextField field_ownername;
@FXML
private TextField field_phonenumber;
@FXML
private TextField field_price;
@FXML
private TextField field_services;
@FXML
private ProgressBar progressbar;
@FXML
private ProgressBar progressbar2;
@FXML
private TextField progressformreport;
@FXML
private TextField progressreport;
@FXML
private TableColumn<CakeRequest, Integer> table_ID;
@FXML
private TableColumn<CakeRequest, String> table_adress;
@FXML
private TableColumn<CakeRequest, String> table_design;
@FXML
private TableColumn<CakeRequest, String> table_flavour;
@FXML
private TableColumn<CakeRequest, String> table_model;
@FXML
private TableColumn<CakeRequest, String> table_name;
@FXML
private TableColumn<CakeRequest, String> table_phonenumber;
@FXML
private TableView<CakeRequest> table;
CakeRequestFormRepository formrepo = new CakeRequestFormRepository();
CakeRequestRepository cakerepo=new CakeRequestRepository();
public void initialize(URL location, ResourceBundle resources){
table_ID.setCellValueFactory(new PropertyValueFactory<>("ID"));
table_name.setCellValueFactory(new PropertyValueFactory<>("OwnerName"));
table_adress.setCellValueFactory(new PropertyValueFactory<>("OwnerAddress"));
table_phonenumber.setCellValueFactory(new PropertyValueFactory<>("PhoneNumber"));
table_flavour.setCellValueFactory(new PropertyValueFactory<>("Flavour"));
table_design.setCellValueFactory(new PropertyValueFactory<>("Design"));
table_model.setCellValueFactory(new PropertyValueFactory<>("Model"));
}
@FXML
void clickedcakeformbutton(ActionEvent event) {
//Another functionality, but it doesnt matter since it doesnt show in the tableview
}
@FXML
void clickedcakerequestnutton(ActionEvent event) {
try {
int ID= Integer.parseInt(field_id.getText());
String ownername = field_ownername.getText();
String adress = field_owneradress.getText();
String phonenumber = field_phonenumber.getText();
String cakemodel = field_cakemodel.getText();
String cakeflavour = field_cakeflavour.getText();
String cakedesign = field_cakedesign.getText();
CakeRequest cake=new CakeRequest(ID, ownername, adress, phonenumber, cakemodel, cakeflavour, cakedesign);
cakerepo.add(cake);
table.getItems().add(cake);
progressreport.setVisible(true);
progressbar.setProgress(1);
progressreport.setText("Done!");
} catch (NumberFormatException errors) {
progressbar.setStyle("-fx-accent: red;");
progressreport.setVisible(true);
progressbar.setProgress(1);
progressreport.setText("Error!");
errorreport.setVisible(true);
errorreport.setText("Errors: "+errors);
}
}
}
你好-view.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.DatePicker?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.ProgressBar?>
<?import javafx.scene.control.Tab?>
<?import javafx.scene.control.TabPane?>
<?import javafx.scene.control.TableColumn?>
<?import javafx.scene.control.TableView?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.text.Font?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="588.0" prefWidth="989.0" xmlns="http://javafx.com/javafx/17" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.example.__fx__homeassignment.HelloController">
<children>
<TabPane layoutX="-8.0" layoutY="-5.0" prefHeight="769.0" prefWidth="997.0" tabClosingPolicy="UNAVAILABLE">
<tabs>
<Tab text="Cake Request">
<content>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="299.0" prefWidth="970.0">
<children>
<Button fx:id="cakerequestbutton" layoutX="356.0" layoutY="419.0" mnemonicParsing="false" onAction="#clickedcakerequestnutton" text="Add this request">
<font>
<Font size="30.0" />
</font>
</Button>
<Label layoutX="146.0" layoutY="14.0" prefHeight="108.0" prefWidth="681.0" text="Create a cake requet" textAlignment="CENTER" underline="true">
<font>
<Font name="Serif Italic" size="80.0" />
</font>
</Label>
<TextField fx:id="field_ownername" layoutX="299.0" layoutY="153.0" />
<TextField fx:id="field_cakemodel" layoutX="678.0" layoutY="153.0" />
<TextField fx:id="field_owneradress" layoutX="299.0" layoutY="197.0" />
<TextField fx:id="field_phonenumber" layoutX="299.0" layoutY="240.0" />
<TextField fx:id="field_cakeflavour" layoutX="678.0" layoutY="197.0" />
<TextField fx:id="field_cakedesign" layoutX="678.0" layoutY="240.0" />
<Label layoutX="146.0" layoutY="151.0" prefHeight="30.0" prefWidth="153.0" text="Owner's name:">
<font>
<Font size="20.0" />
</font>
</Label>
<Label layoutX="146.0" layoutY="194.0" prefHeight="30.0" prefWidth="163.0" text="Owner's adress:">
<font>
<Font size="20.0" />
</font>
</Label>
<Label layoutX="146.0" layoutY="238.0" prefHeight="30.0" prefWidth="183.0" text="Phone number:">
<font>
<Font size="20.0" />
</font>
</Label>
<Label layoutX="536.0" layoutY="151.0" prefHeight="30.0" prefWidth="183.0" text="Cake model:">
<font>
<Font size="20.0" />
</font>
</Label>
<Label layoutX="536.0" layoutY="195.0" prefHeight="30.0" prefWidth="183.0" text="Cake flavour:">
<font>
<Font size="20.0" />
</font>
</Label>
<Label layoutX="536.0" layoutY="238.0" prefHeight="30.0" prefWidth="183.0" text="Cake design:">
<font>
<Font size="20.0" />
</font>
</Label>
<ProgressBar fx:id="progressbar" layoutX="102.0" layoutY="362.0" prefHeight="21.0" prefWidth="768.0" progress="0.0" />
<TextField fx:id="progressreport" alignment="CENTER" editable="false" layoutX="411.0" layoutY="383.0" visible="false" />
<TextField fx:id="errorreport" editable="false" layoutX="628.0" layoutY="396.0" prefHeight="142.0" prefWidth="333.0" visible="false" />
<Label layoutX="417.0" layoutY="278.0" prefHeight="30.0" prefWidth="31.0" text="ID:">
<font>
<Font size="20.0" />
</font>
</Label>
<TextField fx:id="field_id" layoutX="448.0" layoutY="280.0" prefHeight="25.0" prefWidth="128.0" />
</children>
</AnchorPane>
</content>
</Tab>
<Tab text="Cake Request Form">
<content>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="252.0" prefWidth="200.0">
<children>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="509.0" prefWidth="989.0">
<children>
<Button fx:id="cakeformbutton" layoutX="356.0" layoutY="419.0" mnemonicParsing="false" onAction="#clickedcakeformbutton" text="Add this request">
<font>
<Font size="30.0" />
</font>
</Button>
<Label layoutX="60.0" layoutY="14.0" prefHeight="108.0" prefWidth="852.0" text="Create a cake requet form" textAlignment="CENTER" underline="true">
<font>
<Font name="Serif Italic" size="80.0" />
</font>
</Label>
<TextField fx:id="field_services" layoutX="184.0" layoutY="153.0" prefHeight="25.0" prefWidth="721.0" />
<TextField fx:id="field_price" layoutX="184.0" layoutY="196.0" />
<TextField fx:id="field_employee" layoutX="184.0" layoutY="240.0" />
<Label layoutX="60.0" layoutY="151.0" prefHeight="30.0" prefWidth="153.0" text="Services:">
<font>
<Font size="20.0" />
</font>
</Label>
<Label layoutX="60.0" layoutY="193.0" prefHeight="30.0" prefWidth="183.0" text="Price:">
<font>
<Font size="20.0" />
</font>
</Label>
<Label layoutX="60.0" layoutY="238.0" prefHeight="30.0" prefWidth="183.0" text="Employee:">
<font>
<Font size="20.0" />
</font>
</Label>
<Label layoutX="614.0" layoutY="194.0" prefHeight="30.0" prefWidth="183.0" text="Date:">
<font>
<Font size="20.0" />
</font>
</Label>
<ProgressBar fx:id="progressbar2" layoutX="102.0" layoutY="362.0" prefHeight="21.0" prefWidth="768.0" progress="0.0" />
<DatePicker fx:id="field_date" layoutX="696.0" layoutY="196.0" />
<TextField fx:id="progressformreport" alignment="CENTER" editable="false" layoutX="412.0" layoutY="383.0" visible="false" />
<Label layoutX="614.0" layoutY="240.0" prefHeight="30.0" prefWidth="183.0" text="form ID:">
<font>
<Font size="20.0" />
</font>
</Label>
<TextField fx:id="field_formID" layoutX="697.0" layoutY="240.0" prefHeight="25.0" prefWidth="174.0" />
<Label layoutX="356.0" layoutY="286.0" prefHeight="30.0" prefWidth="183.0" text="Cake ID:">
<font>
<Font size="20.0" />
</font>
</Label>
<TextField fx:id="field_formcakeID" layoutX="440.0" layoutY="288.0" prefHeight="25.0" prefWidth="174.0" />
</children>
</AnchorPane>
<TextField fx:id="errorreportform" editable="false" layoutX="638.0" layoutY="406.0" prefHeight="142.0" prefWidth="333.0" visible="false" />
</children>
</AnchorPane>
</content>
</Tab>
<Tab text="Database">
<content>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="491.0" prefWidth="998.0">
<children>
<Label layoutX="14.0" layoutY="14.0" prefHeight="30.0" prefWidth="322.0" text="The current cake requests:">
<font>
<Font size="20.0" />
</font>
</Label>
<TableView fx:id="table" layoutX="14.0" layoutY="44.0" prefHeight="515.0" prefWidth="976.0">
<columns>
<TableColumn fx:id="table_ID" prefWidth="75.0" text="ID" />
<TableColumn fx:id="table_name" prefWidth="183.0" text="Owner's name" />
<TableColumn minWidth="0.0" prefWidth="0.0" text="C1" />
<TableColumn fx:id="table_adress" prefWidth="183.0" text="Owner's adress" />
<TableColumn fx:id="table_phonenumber" prefWidth="137.0" text="Phone Number" />
<TableColumn fx:id="table_model" prefWidth="137.0" text="Model" />
<TableColumn fx:id="table_flavour" prefWidth="137.0" text="Flavour" />
<TableColumn fx:id="table_design" prefWidth="123.0" text="Design" />
</columns>
</TableView>
</children>
</AnchorPane>
</content>
</Tab>
</tabs>
</TabPane>
</children>
</AnchorPane>
CakeRequest.java
public class CakeRequest implements Identifiable<Integer>, Serializable{
private int ID;
private String OwnerName;
private String OwnerAddress;
private String PhoneNumber;
private String Model;
private String Flavour;
private String Design;
public Integer getID() {
return ID;
}
public String getOwnerName() {
return OwnerName;
}
public String getOwnerAddress() {
return OwnerAddress;
}
public String getPhoneNumber() {
return PhoneNumber;
}
public String getFlavour() {
return Flavour;
}
public String getDesign() {
return Design;
}
public String getModel() {
return Model;
}
我在网上查看，尝试实施修复，但仍然没有。 有什么帮助吗？
1 个解决方案
解决方案1
0 2021-12-29 07:09:29
错误：PropertyValueFactory 命名
我无法重新关闭它，因为它是由我重新打开的，所以我将用一个答案替换评论，添加一些解释和指向所有重复项的链接。
您在 PropertyValueFactories 中的名称都是错误的，请参阅副本：
有关如何确定适当名称的信息。 但更好的是，将 PropertyValueFactories 替换为 lambda，如下例所示：
错误：未调用初始化方法
您的初始化没有被调用。 看：
允许它工作的修复（除了像您在编辑中所做的那样修复 PropertyValueFactory 名称）是从初始化方法中删除所有参数。
你不使用它们，如果你这样做了，它们可以通过@FXML 表示法注入，请参阅：
我测试了您的应用程序（在删除域内容之后）并且它工作正常（至少对于已实现的部分）并从我能够填写的字段中填充表列（大约是其中的一半）。
不是错误但应该修复的事情
遵循Java 命名约定并将它们应用于您在 Java 中编写的每个标识符（尤其重要的是使用依赖于这些约定的 PropertyValueFactory 之类的东西，但最重要的是因为这是其他人在阅读您的代码时所期望的）。
此外，修复button的nutton等拼写错误。
当我设置Progress-Indicator.setVisible（true）时，Javafx Progress-Indicator不显示
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