将页脚行放入JTable的最佳方法是什么？有没有人有任何示例代码可以做到这一点？
到目前为止，我唯一想到的方法是在表模型中放一个特殊的行，它总是排在最后。
以下是我最终的结果：
JTable mainTable = new JTable(mainTableModel);
JTable footerTable = new JTable(footerModel);
footerTable.setColumnModel(mainTable.getColumnModel());
// Disable selection in the footer. Otherwise you can select the footer row
// along with a row in the table and that can look quite strange.
footerTable.setRowSelectionAllowed(false);
footerTable.setColumnSelectionAllowed(false);
JPanel tablePanel = new JPanel();
BoxLayout boxLayout = new BoxLayout(tablePanel, BoxLayout.Y_AXIS);
tablePanel.setLayout(boxLayout);
tablePanel.add(mainTable.getTableHeader()); // This seems like a bit of a WTF
tablePanel.add(mainTable);
tablePanel.add(footerTable);
排序工作正常，但选择页脚行有点奇怪。
答案 0 :(得分：5)
尝试使用与数据表使用相同列模型的第二个JTable，并将页脚数据添加到该表。在原始表格下添加第二个（页脚）表格。
JTable footer = new JTable(model, table.getColumnModel());
panel.add(BorderLayout.CENTER, table);
panel.add(BorderLayout.SOUTH, footer);
答案 1 :(得分：2)
看起来这个project有一个名为JideScrollPane的组件，它宣告对行页脚的支持。我自己没试过，但听起来它确实是你想要的！ 该网站还有一个演示应用程序，您可以在其中查看它的运行情况，它看起来非常好。
请注意，他们需要付出的代价似乎很多，但他们的JideScrollPane看起来是免费和开源的。
答案 2 :(得分：1)
使用下面的2个表是一个很好的方法。
如果您希望能够调整/移动/删除列，则键不要在表之间重用相同的columnModel。让听众做大小调整。见例：
package snippet;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.SwingUtilities;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.TableColumnModelEvent;
import javax.swing.event.TableColumnModelListener;
import javax.swing.table.TableColumnModel;
public class FixedRow2Tables extends JFrame {
private static final long serialVersionUID = 4676303089799270571L;
Object[][] data;
Object[] column;
JTable footerTable, table;
public FixedRow2Tables() {
super("Fixed Row Example");
Object[][] mainData = new Object[][] { { "a", "", "", "", "", "" },
{ "", "b", "", "", "", "" }, { "", "", "c", "", "", "" },
{ "", "", "", "d", "", "" }, { "", "", "", "", "e", "" },
{ "", "", "", "", "", "f" } };
Object[][] summaryData = { { "fixed1", "", "", "", "", "" },
{ "fixed2", "", "", "", "", "" } };
column = new Object[] { "A", "B", "C", "D", "E", "F" };
table = new JTable(mainData, column);
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
footerTable = new JTable(summaryData, column);
footerTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
footerTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
footerTable.setTableHeader(null);
// footerTable.setColumnModel(table.getColumnModel());
table.getColumnModel().addColumnModelListener(
new TableColumnModelListener() {
@Override
public void columnSelectionChanged(ListSelectionEvent e) {
}
@Override
public void columnRemoved(TableColumnModelEvent e) {
}
@Override
public void columnMoved(TableColumnModelEvent e) {
}
@Override
public void columnMarginChanged(ChangeEvent e) {
final TableColumnModel tableColumnModel = table
.getColumnModel();
TableColumnModel footerColumnModel = footerTable
.getColumnModel();
for (int i = 0; i < tableColumnModel.getColumnCount(); i++) {
int w = tableColumnModel.getColumn(i).getWidth();
footerColumnModel.getColumn(i).setMinWidth(w);
footerColumnModel.getColumn(i).setMaxWidth(w);
// footerColumnModel.getColumn(i).setPreferredWidth(w);
}
footerTable.doLayout();
footerTable.repaint();
repaint();
}
@Override
public void columnAdded(TableColumnModelEvent e) {
}
});
JScrollPane scroll = new JScrollPane(table);
scroll.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scroll.setPreferredSize(new Dimension(400, 100));
getContentPane().add(scroll, BorderLayout.CENTER);
getContentPane().add(footerTable, BorderLayout.SOUTH);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
FixedRow2Tables frame = new FixedRow2Tables();
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.pack();
frame.setVisible(true);
}
});
}
}
答案 3 :(得分：0)
我唯一一次这样做，我只是在模型中添加了一行，如下所示：
@Override
public int getRowCount() {
return _tableContents.size() + 1;
}
_tableContents当然是我模型背后的实际数据。你必须要注意模型中的额外行（在setValueAt（...）之类的调用中）
祝你好运。答案 4 :(得分：0)
您可以尝试实现自己的TableCellRenderer，用您的页脚替换上一个可见行的呈现内容。但是，这不会固定在表格的底部，它可能会在您滚动时上下移动。
答案 5 :(得分：0)
我认为最好的方法（但肯定不是最简单的方法）是查看JTableHeader组件的源代码，看看它是如何工作的，然后创建自己的JTableFooter组件。您可以为页脚重用JTableHeader UI委托，我认为主要区别在于getHeaderRect()方法，它确定给定列标题区块的边界。
答案 6 :(得分：0)
适用于我的解决方案是为视口绘制边框（您的JTable必须位于JScrollPane中）....
答案 7 :(得分：0)
import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import javax.swing.table.*;
class Application extends JFrame
{
public Application()
{
this.setBounds(100,100,500,200);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
String data[][] = {{"a1","b1","c1"},{"a2","b2","c2"},{"a3","b3","c3"}};
String columnNames[] = {"a","b","c"};
JTable jtable = new JTable(new DefaultTableModel(data,columnNames));
JScrollPane jscrollPane = new JScrollPane(jtable,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
jscrollPane.setBorder(new CompoundBorder(new MatteBorder(0,0,1,0,Color.gray),new EmptyBorder(0,0,0,0)));
this.add(jscrollPane,BorderLayout.CENTER);
JTable jtable_footer = new JTable(new DefaultTableModel(3,columnNames.length),jtable.getColumnModel());
SyncListener syncListener = new SyncListener(jtable,jtable_footer);
this.add(jtable_footer,BorderLayout.SOUTH);
}
public static void main(String args[])
{
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
Application application = new Application();
application.setVisible(true);
}
});
}
}
class SyncListener implements TableColumnModelListener
{
JTable jtable_data;
JTable jtable_footer;
public SyncListener(JTable main, JTable footer)
{
jtable_data = main;
jtable_footer = footer;
DefaultTableColumnModel dtcm = (DefaultTableColumnModel)jtable_data.getColumnModel();
dtcm.removeColumnModelListener(dtcm.getColumnModelListeners()[1]);
dtcm.addColumnModelListener(this);
}
public void columnMarginChanged(ChangeEvent changeEvent)
{
for (int column = 0; column < jtable_data.getColumnCount(); column++)
{
jtable_footer.getColumnModel().getColumn(column).setWidth(jtable_data.getColumnModel().getColumn(column).getWidth());
}
jtable_footer.repaint();
}
public void columnAdded(TableColumnModelEvent e){}
public void columnMoved(TableColumnModelEvent e){}
public void columnRemoved(TableColumnModelEvent e){}
public void columnSelectionChanged(ListSelectionEvent e){}
}