我是javaFX的新手，我正在尝试用来自ObservableList clientData的数据填充我的clientDataTable。我的ConnectionsPane构造函数创建一个测试客户端对象，我试图让我的ConnectionsPaneController填充表。我是javaFX的新手，无论我做什么，我似乎无法让表格填充。有人可以帮帮我吗？
我将包含用于此过程的文件。
我遗漏了Client.java类。现在添加。
谢谢！
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编辑 - 所以我实施了下面要求的更改。我还查看了示例资源并尝试使用它们。尝试在
设置表项时，我一直回到null excecption错误clientDataTable.setItems（ConnectionsPane.getClientData（））;
但是当我打印出ConnectionsPane.getClientData（）时，它确实给了我一个包含客户端的可观察列表。
编辑2 - 所以我花了更多时间查看示例并尝试将其转换为我的设置，因为我需要这个特定的菜单设置。我也看了重复的帖子，我更新了我的代码，所以它不是静态的。代码现在运行正常，它创建并在控制台中显示的客户端对象，但它仍然不会显示在表中。我认为这可能与控制器访问有关，但不确定。我从没想过桌子会这么麻烦:)有人可以帮忙吗？
MainMenu.java
package io.ironbytes.corkscrew.models;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class MainMenu extends Application {
Parent root;
Stage stage;
@Override
public void start(Stage primaryStage) {
try {
root = FXMLLoader.load(getClass().getResource("../views/MainMenu.fxml"));
stage = primaryStage;
stage.setTitle("Welcome");
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
launch(args);
}
}
ConnectionsPaneController.java
package io.ironbytes.corkscrew.controllers;
import io.ironbytes.corkscrew.models.Client;
import io.ironbytes.corkscrew.models.ConnectionsPane;
import javafx.fxml.FXML;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
public class ConnectionsPaneController {
@FXML private TableView<Client> clientDataTable;
@FXML private TableColumn<Client, String> online;
@FXML private TableColumn<Client, String> username;
private ConnectionsPane ConnectionsPane;
public ConnectionsPaneController() {
}
/**
* Initializes the controller class. This method is automatically called
* after the fxml file has been loaded.
*/
@FXML
private void initialize() {
username.setCellValueFactory(cellData -> cellData.getValue().getUsername());
}
/**
* Is called by the main application to give a reference back to itself.
*
* @param mainApp
*/
public void setMainApp(ConnectionsPane ConnectionsPane) {
this.ConnectionsPane = ConnectionsPane;
// Prints: [Client [clientID=1, isOnline=true, username=StringProperty [value: test], ipAddress=1.1.1.1]]
System.out.println(ConnectionsPane.getClientData());
// Add observable list data to the table
clientDataTable.setItems(ConnectionsPane.getClientData());
clientDataTable.refresh();
}
}
ConnectionsPane.java
package io.ironbytes.corkscrew.models;
import java.io.IOException;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.FXMLLoader;
import javafx.scene.layout.AnchorPane;
public class ConnectionsPane extends AnchorPane{
/**
* The data as an observable list of Persons.
*/
public ObservableList<Client> clientData = FXCollections.observableArrayList();
public ConnectionsPane(){
//Add a test client to the ObservableList
clientData.add(new Client(1));
System.out.println(getClientData());
FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("../views/ConnectionsPane.fxml"));
//Give the controller access to the main app.
//ConnectionsPaneController controller = fxmlLoader.getController();
//controller.setMainApp(this);
fxmlLoader.setRoot(this);
fxmlLoader.setController(this);
try {
fxmlLoader.load();
} catch (IOException e) {
e.printStackTrace();
}
}
public ObservableList<Client> getClientData() {
return clientData;
}
}
ConnectionsPane.fxml
package io.ironbytes.corkscrew.models;
import java.io.IOException;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.FXMLLoader;
import javafx.scene.layout.AnchorPane;
public class ConnectionsPane extends AnchorPane{
/**
* The data as an observable list of Persons.
*/
public ObservableList<Client> clientData = FXCollections.observableArrayList();
public ConnectionsPane(){
//Add a test client to the ObservableList
clientData.add(new Client(1));
System.out.println(getClientData());
FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("../views/ConnectionsPane.fxml"));
//Give the controller access to the main app.
//ConnectionsPaneController controller = fxmlLoader.getController();
//controller.setMainApp(this);
fxmlLoader.setRoot(this);
fxmlLoader.setController(this);
try {
fxmlLoader.load();
} catch (IOException e) {
e.printStackTrace();
}
}
public ObservableList<Client> getClientData() {
return clientData;
}
}
Client.java
package io.ironbytes.corkscrew.models;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
public class Client {
private int clientID;
private boolean isOnline;
private StringProperty username;
private String ipAddress;
public Client() {
}
public Client(int ClientID) {
this.clientID=ClientID;
this.isOnline=true;
this.ipAddress="1.1.1.1";
this.username = new SimpleStringProperty("test");
}
@Override
public String toString() {
return "Client [clientID=" + clientID + ", isOnline=" + isOnline + ", username=" + username + ", ipAddress="
+ ipAddress + "]";
}
public int getClientID() {
return clientID;
}
public void setClientID(int clientID) {
this.clientID = clientID;
}
public boolean isOnline() {
return isOnline;
}
public void setOnline(boolean isOnline) {
this.isOnline = isOnline;
}
public StringProperty getUsername() {
return username;
}
public void setUsername(StringProperty username) {
this.username = username;
}
public String getIpAddress() {
return ipAddress;
}
public void setIpAddress(String ipAddress) {
this.ipAddress = ipAddress;
}
}