Question

在我从数据结构中的excel导入电子表格的名称后，我尝试使用fireTableChanged（）方法更新我的JTable，但是没有执行Method。我通过测试确认数据已正确导入，并且jtable应具有必要的信息。

我必须做什么才能正确更新JTable？我找到了这个主题的其他几个链接，但它们都没有为我工作：

How to make JTable show refreshed data after updating database?

JTable How to refresh table model after insert delete or update the data.

AbstractDataTable fireTableDataChanged() does not refresh jtable

型号：

public class Model extends Observable {
String[][] data;
List<Arbeitsmappe> AMList = new LinkedList<>();
.....
public void setAMList(List<Arbeitsmappe> aMList) {
AMList = aMList; //new List replace the old
this.getData(); //The 2dimensional Array is filled with the names from the list
setChanged(); 
notifyObservers(Controller.Command_Excel_Eingelesen);
 }
}

查看：

    JTextField cellEditorTF = new JTextField();
    cellEditorTF.setEditable(false);
    DefaultCellEditor cellEditor = new DefaultCellEditor(cellEditorTF);

    ContentTable = new JTable(model.getData(), Model.columnNames);
    //Cell Editable FALSE
    ContentTable.getColumnModel().getColumn(0).setCellEditor(cellEditor);
    //Single Interval Selection 
    ContentTable.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
    //Cell Listener - When Cell is edited the new informationen is safed in AMLISt
    Action action = new AbstractAction()
    {
        public void actionPerformed(ActionEvent e)
        {
            TableCellListener tcl = (TableCellListener)e.getSource();
            Model.AMList.get(tcl.getRow()).Speichername = String.valueOf(tcl.getNewValue());
           // System.out.println("Row: " + tcl.getRow() + "  " + Model.data[tcl.getRow()][1]);
        }
    };
    TableCellListener tcl = new TableCellListener(ContentTable, action);
    JScrollPane scrollPane = new JScrollPane(ContentTable);
    ContentTable.setFillsViewportHeight(true);
    ContentTable.getTableHeader().setReorderingAllowed(false);

    this.add(BorderLayout.NORTH,ButtonPanel);
    this.add(BorderLayout.SOUTH,scrollPane);

}

@Override
public void update(Observable arg0, Object arg1) {
    if(arg0 instanceof Model){
        Model model = (Model) arg0;
        String cmd = (String) arg1;
        if(cmd.equals(Controller.Command_Excel_Eingelesen)){

            ((AbstractTableModel)ContentTable.getModel()).fireTableDataChanged();
            ContentTable.repaint();
            this.repaint();
        }
    }

Answer 1

((AbstractTableModel)ContentTable.getModel()).fireTableDataChanged();被称为模型定义，它不应该是，必须是代码的一部分，类void，它覆盖AbstractTableModel及其方法
除了此方法重置模型的所有自定义属性，以及JTable的方法的重要部分（例如覆盖XxxTableCellRenderer / Editor）
read API in part methods for fireTableXxxXxx，所有JTable / AbstractTableModel生命周期都有通知，请确保您为每个操作/事件使用了正确的通知程序
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刷新JTable firetableDataChanged未执行

1 个答案: