Question

我知道如何使用普通数据类型或自定义类包含普通数据类型来填充JavaFX中的tableview。但是，当我的类还包含列表时，我对如何制作一个tableview很感兴趣。我使用Scene Builder作为我的视图，因此我的视图文件是FXML。

以下是我的课程，其中列表为 duePersons 和 owePersons ：

    public class OverviewTable {

    private SimpleStringProperty user = new SimpleStringProperty();
    private SimpleDoubleProperty income = new SimpleDoubleProperty();
    private SimpleDoubleProperty expenses = new SimpleDoubleProperty();
    private SimpleDoubleProperty generalTotal = new SimpleDoubleProperty();
    private ObservableList<Contributor> duePersons = FXCollections.observableArrayList();
    private ObservableList<Contributor> owePersons = FXCollections.observableArrayList();

    public OverviewTable(String user){
        this.user.set(user);
    }

    public OverviewTable(String user, double income, double expenses) {
        this.user.set(user);
        this.income.set(income);
        this.expenses.set(expenses);
        this.generalTotal.set(income-expenses);;
    }

    public SimpleStringProperty userProperty() {
        return user;
    }

    public void setUser(String user) {
        this.user.set(user);
    }

    public SimpleDoubleProperty incomeProperty() {
        return income;
    }

    public void setIncome(double income) {
        this.income.set(income);
    }

    public SimpleDoubleProperty expensesProperty() {
        return expenses;
    }

    public void setExpenses(double expenses) {
        this.expenses.set(expenses);
    }

    public void setGeneralTotal(){
        this.generalTotal.set(this.income.doubleValue() - this.expenses.doubleValue());
    }

    public SimpleDoubleProperty generalTotalProperty() {
        return generalTotal;
    }


    public List<Contributor> duePersonsProperty() {
        return duePersons;
    }

    public void setDuePersons(ObservableList<Contributor> duePersons) {
        this.duePersons = duePersons;
    }

    public List<Contributor> getOwePersons() {
        return owePersons;
    }

    public void setOwePersons(ObservableList<Contributor> owePersons) {
        this.owePersons = owePersons;
    }

    public void addDuePersons(Contributor contributor){
        this.duePersons.add(contributor);
    }

    public void addPersons(Contributor contributor){
        this.duePersons.add(contributor);
    }

}

这是Contributor类，它还扩展了只有“name”和“pid”属性的Person类。

public class Contributor extends Person{

private SimpleDoubleProperty amount = new SimpleDoubleProperty();

public Contributor(int pid, String name, Double sum) {
    super(pid, name);
    this.amount.set(sum);
}

public Contributor(String name, double amount) {
    super(name);
    this.amount.set(amount);

}

public SimpleDoubleProperty getSum() {
    return amount;
}

public void setSum(double sum) {
    this.amount.set(sum);
}

public SimpleStringProperty nameProperty(){
    return super.nameProperty();
}

这是我的Java FXML视图控制器：

public class OverviewController{

@FXML
private TableView<OverviewTable> tableView;

@FXML
private TableColumn<OverviewTable, String> userColumn;

@FXML
private TableColumn<OverviewTable, Double> incomeColumn;

@FXML
private TableColumn<OverviewTable, Double> expensesColumn;

@FXML
private TableColumn<OverviewTable, Double> totalGeneralColumn;

@FXML
private TableColumn<OverviewTable, List<Contributor>> personDueColumn;

@FXML
private TableColumn<?, ?> amountDueColumn;

@FXML
private TableColumn<?, ?> totalDueColumn;

@FXML
private TableColumn<?, ?> personOweColumn;

@FXML
private TableColumn<?, ?> amountOwnColumn;

@FXML
private TableColumn<?, ?> totalOweColumn;

public void initialize() {

    userColumn.setCellValueFactory(new PropertyValueFactory<>("user"));
    incomeColumn.setCellValueFactory(new PropertyValueFactory<>("income"));
    expensesColumn.setCellValueFactory(new PropertyValueFactory<>("expenses"));
    totalGeneralColumn.setCellValueFactory(new PropertyValueFactory<>("generalTotal"));
    personDueColumn.setCellValueFactory(new PropertyValueFactory<>("duePersons"));

    tableView.setItems(OverviewTabQueries.getUsers());


}

正如您所看到的，最后一些列甚至尚未使用，因为我想首先使其适用于OverviewTable类中的一个列表，然后我将为另一个列执行此操作。在上面的控制器中，一切正常，前4列，使用普通的字符串/双属性，但是当尝试输入hte List时，它不起作用。请注意，我从localhost上的MySQL数据库获取数据，但它正常工作，这不是问题。

那么有人可以帮我解决这个问题吗？我在网上搜索过但找不到tableview的例子，其中tableview中使用的Object中有一个或多个列表属性。

如果有人想知道，这里是加载数据时结果的样子（请原谅我的Paint技能）： "Due Amount" and "Owe Amount" are the columns that should integrate the lists with the Person/User's name and amount

任何建议都会有所帮助：）

JavaFX Tableview，其中包含填充对象

0 个答案: