JTable的排序问题! 点击table各个列头, 然后table中的数据就会按所点列排序 (用jdk1.5)

首先我们定义一个排序类，继承自AbstractTableModel。TableSorter 类可以自己自动处理每件事，根据按下的鼠标按钮，按照升序或降序顺序对数据进行排序，还会用箭头指示排序的方向。
public class TableSorter extends AbstractTableModel {
    protected TableModel tableModel;    public static final int DESCENDING = -1;
    public static final int NOT_SORTED = 0;
    public static final int ASCENDING = 1;    private static Directive EMPTY_DIRECTIVE = new Directive(-1, NOT_SORTED);    public static final Comparator COMPARABLE_COMAPRATOR = new Comparator() {
        public int compare(Object o1, Object o2) {
            return ((Comparable) o1).compareTo(o2);
        }
    };
    public static final Comparator LEXICAL_COMPARATOR = new Comparator() {
        public int compare(Object o1, Object o2) {
            return o1.toString().compareTo(o2.toString());
        }
    };    private Row[] viewToModel;
    private int[] modelToView;    private JTableHeader tableHeader;
    private MouseListener mouseListener;
    private TableModelListener tableModelListener;
    private Map columnComparators = new HashMap();
    private List sortingColumns = new ArrayList();    public TableSorter() {
        this.mouseListener = new MouseHandler();
        this.tableModelListener = new TableModelHandler();
    }    public TableSorter(TableModel tableModel) {
        this();
        setTableModel(tableModel);
    }    public TableSorter(TableModel tableModel, JTableHeader tableHeader) {
        this();
        setTableHeader(tableHeader);
        setTableModel(tableModel);
    }    private void clearSortingState() {
        viewToModel = null;
        modelToView = null;
    }    public TableModel getTableModel() {
        return tableModel;
    }    public void setTableModel(TableModel tableModel) {
        if (this.tableModel != null) {
            this.tableModel.removeTableModelListener(tableModelListener);
        }        this.tableModel = tableModel;
        if (this.tableModel != null) {
            this.tableModel.addTableModelListener(tableModelListener);
        }        clearSortingState();
        fireTableStructureChanged();
    }    public JTableHeader getTableHeader() {
        return tableHeader;
    }    public void setTableHeader(JTableHeader tableHeader) {
        if (this.tableHeader != null) {
            this.tableHeader.removeMouseListener(mouseListener);
            TableCellRenderer defaultRenderer = this.tableHeader.getDefaultRenderer();
            if (defaultRenderer instanceof SortableHeaderRenderer) {
                this.tableHeader.setDefaultRenderer(((SortableHeaderRenderer) defaultRenderer).tableCellRenderer);
            }
        }
        this.tableHeader = tableHeader;
        if (this.tableHeader != null) {
            this.tableHeader.addMouseListener(mouseListener);
            this.tableHeader.setDefaultRenderer(
                    new SortableHeaderRenderer(this.tableHeader.getDefaultRenderer()));
        }
    }    public boolean isSorting() {
        return sortingColumns.size() != 0;
    }    private Directive getDirective(int column) {
        for (int i = 0; i < sortingColumns.size(); i++) {
            Directive directive = (Directive)sortingColumns.get(i);
            if (directive.column == column) {
                return directive;
            }
        }
        return EMPTY_DIRECTIVE;
    }    public int getSortingStatus(int column) {
        return getDirective(column).direction;
    }    private void sortingStatusChanged() {
        clearSortingState();
        fireTableDataChanged();
        if (tableHeader != null) {
            tableHeader.repaint();
        }
    }    public void setSortingStatus(int column, int status) {
        Directive directive = getDirective(column);
        if (directive != EMPTY_DIRECTIVE) {
            sortingColumns.remove(directive);
        }
        if (status != NOT_SORTED) {
            sortingColumns.add(new Directive(column, status));
        }
        sortingStatusChanged();
    }    protected Icon getHeaderRendererIcon(int column, int size) {
        Directive directive = getDirective(column);
        if (directive == EMPTY_DIRECTIVE) {
            return null;
        }
        return new Arrow(directive.direction == DESCENDING, size, sortingColumns.indexOf(directive));
    }    private void cancelSorting() {
        sortingColumns.clear();
        sortingStatusChanged();
    }    public void setColumnComparator(Class type, Comparator comparator) {
        if (comparator == null) {
            columnComparators.remove(type);
        } else {
            columnComparators.put(type, comparator);
        }
    }    protected Comparator getComparator(int column) {
        Class columnType = tableModel.getColumnClass(column);
        Comparator comparator = (Comparator) columnComparators.get(columnType);
        if (comparator != null) {
            return comparator;
        }
        if (Comparable.class.isAssignableFrom(columnType)) {
            return COMPARABLE_COMAPRATOR;
        }
        return LEXICAL_COMPARATOR;
    }    private Row[] getViewToModel() {
        if (viewToModel == null) {
            int tableModelRowCount = tableModel.getRowCount();
            viewToModel = new Row[tableModelRowCount];
            for (int row = 0; row < tableModelRowCount; row++) {
                viewToModel[row] = new Row(row);
            }            if (isSorting()) {
                Arrays.sort(viewToModel);
            }
        }
        return viewToModel;
    }    public int modelIndex(int viewIndex) {
        return getViewToModel()[viewIndex].modelIndex;
    }    private int[] getModelToView() {
        if (modelToView == null) {
            int n = getViewToModel().length;
            modelToView = new int[n];
            for (int i = 0; i < n; i++) {
                modelToView[modelIndex(i)] = i;
            }
        }
        return modelToView;
    }
    public int getRowCount() {
        return (tableModel == null) ? 0 : tableModel.getRowCount();
    }    public int getColumnCount() {
        return (tableModel == null) ? 0 : tableModel.getColumnCount();
    }    public String getColumnName(int column) {
        return tableModel.getColumnName(column);
    }    public Class getColumnClass(int column) {
        return tableModel.getColumnClass(column);
    }    public boolean isCellEditable(int row, int column) {
        return tableModel.isCellEditable(modelIndex(row), column);
    }    public Object getValueAt(int row, int column) {
        return tableModel.getValueAt(modelIndex(row), column);
    }    public void setValueAt(Object aValue, int row, int column) {
        tableModel.setValueAt(aValue, modelIndex(row), column);
    }

由于内容限制，接上面：private class Row implements Comparable {
        private int modelIndex;        public Row(int index) {
            this.modelIndex = index;
        }        public int compareTo(Object o) {
            int row1 = modelIndex;
            int row2 = ((Row) o).modelIndex;            for (Iterator it = sortingColumns.iterator(); it.hasNext();) {
                Directive directive = (Directive) it.next();
                int column = directive.column;
                Object o1 = tableModel.getValueAt(row1, column);
                Object o2 = tableModel.getValueAt(row2, column);                int comparison = 0;                if (o1 == null && o2 == null) {
                    comparison = 0;
                } else if (o1 == null) {
                    comparison = -1;
                } else if (o2 == null) {
                    comparison = 1;
                } else {
                    comparison = getComparator(column).compare(o1, o2);
                }
                if (comparison != 0) {
                    return directive.direction == DESCENDING ? -comparison : comparison;
                }
            }
            return 0;
        }
    }    private class TableModelHandler implements TableModelListener {
        public void tableChanged(TableModelEvent e) {

            if (!isSorting()) {
                clearSortingState();
                fireTableChanged(e);
                return;
            }

            if (e.getFirstRow() == TableModelEvent.HEADER_ROW) {
                cancelSorting();
                fireTableChanged(e);
                return;
            }
            int column = e.getColumn();
            if (e.getFirstRow() == e.getLastRow()
                    && column != TableModelEvent.ALL_COLUMNS
                    && getSortingStatus(column) == NOT_SORTED
                    && modelToView != null) {
                int viewIndex = getModelToView()[e.getFirstRow()];
                fireTableChanged(new TableModelEvent(TableSorter.this,
                                                     viewIndex, viewIndex,
                                                     column, e.getType()));
                return;
            }            clearSortingState();
            fireTableDataChanged();
            return;
        }
    }    private class MouseHandler extends MouseAdapter {
        public void mouseClicked(MouseEvent e) {
            JTableHeader h = (JTableHeader) e.getSource();
            TableColumnModel columnModel = h.getColumnModel();
            int viewColumn = columnModel.getColumnIndexAtX(e.getX());
            int column = columnModel.getColumn(viewColumn).getModelIndex();
            if (column != -1) {
                int status = getSortingStatus(column);
                if (!e.isControlDown()) {
                    cancelSorting();
                }
                status = status + (e.isShiftDown() ? -1 : 1);
                status = (status + 4) % 3 - 1;
                setSortingStatus(column, status);
            }
        }
    }    private static class Arrow implements Icon {
        private boolean descending;
        private int size;
        private int priority;        public Arrow(boolean descending, int size, int priority) {
            this.descending = descending;
            this.size = size;
            this.priority = priority;
        }        public void paintIcon(Component c, Graphics g, int x, int y) {
            Color color = c == null ? Color.GRAY : c.getBackground();                         int dx = (int)(size/2*Math.pow(0.8, priority));
            int dy = descending ? dx : -dx;            y = y + 5*size/6 + (descending ? -dy : 0);
            int shift = descending ? 1 : -1;
            g.translate(x, y);            g.setColor(color.darker());
            g.drawLine(dx / 2, dy, 0, 0);
            g.drawLine(dx / 2, dy + shift, 0, shift);

            g.setColor(color.brighter());
            g.drawLine(dx / 2, dy, dx, 0);
            g.drawLine(dx / 2, dy + shift, dx, shift);

            if (descending) {
                g.setColor(color.darker().darker());
            } else {
                g.setColor(color.brighter().brighter());
            }
            g.drawLine(dx, 0, 0, 0);            g.setColor(color);
            g.translate(-x, -y);
        }        public int getIconWidth() {
            return size;
        }        public int getIconHeight() {
            return size;
        }
    }    private class SortableHeaderRenderer implements TableCellRenderer {
        private TableCellRenderer tableCellRenderer;        public SortableHeaderRenderer(TableCellRenderer tableCellRenderer) {
            this.tableCellRenderer = tableCellRenderer;
        }        public Component getTableCellRendererComponent(JTable table,
                                                       Object value,
                                                       boolean isSelected,
                                                       boolean hasFocus,
                                                       int row,
                                                       int column) {
            Component c = tableCellRenderer.getTableCellRendererComponent(table,
                    value, isSelected, hasFocus, row, column);
            if (c instanceof JLabel) {
                JLabel l = (JLabel) c;
                l.setHorizontalTextPosition(JLabel.LEFT);
                int modelColumn = table.convertColumnIndexToModel(column);
                l.setIcon(getHeaderRendererIcon(modelColumn, l.getFont().getSize()));
            }
            return c;
        }
    }    private static class Directive {
        private int column;
        private int direction;        public Directive(int column, int direction) {
            this.column = column;
            this.direction = direction;
        }
    }
}

最后这样使用：JTable table = new JTable();
TableSorter sorter = new TableSorter(table.getModel, table.getTableHeader());
table.setModel(sorter);

上面的应用方法不行 table.getModel 这错我这样用也不行
TableSorter sorter = new TableSorter(new MyTableModel()); //这错。。JTable table = new JTable(sorter);
sorter.setTableHeader(table.getTableHeader());

这是我的实现类
import javax.swing.event.ListSelectionListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;public class ColumnModelTest{

    public ColumnModelTest() {

    JFrame f = new JFrame();



        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }    public static void main(String args[]) {
     JFrame f = new JFrame();
     MyTableModel tm=new MyTableModel();
     TableSorter sorter = new TableSorter(tm);

        JTable table = new JTable(sorter);
       sorter.setTableHeader(table.getTableHeader());
     table.setPreferredScrollableViewportSize(new Dimension(550, 100));
     JScrollPane s = new JScrollPane(table);
     f.getContentPane().add(s, BorderLayout.CENTER);
    f.setTitle("ColumnModelTest");
         f.pack();
         f.setVisible(true);



    }

}
还有一个
import javax.swing.event.TableModelListener;
import javax.swing.table.TableModel;class MyTableModel implements TableModel{
Object[][] p = {
            {new Boolean(false), "人事部","12311","无名", "男", "19920103","本科","物理"},
            {new Boolean(false), "人事部","12312","无名", "男", "19920103","本科","物理"},
            {new Boolean(false), "人事部","12313","无名", "男", "19920103","本科","物理"},
            {new Boolean(false), "人事部","12314","无名", "男", "19920103","本科","物理"}};
String[] n = {"选择","部门","教师编码","姓名","性别","生日","最终学历","研究领域"};

        public int getColumnCount() {
            return n.length;
        }        public int getRowCount() {
            return p.length;
        }        public String getColumnName(int col) {
            return n[col];
        }        public Object getValueAt(int row, int col) {
            return p[row][col];
        }
    public Class getColumnClass(int c) {
         return getValueAt(0, c).getClass();
     }
    public boolean isCellEditable(int rowIndex, int columnIndex) {
    return true;
     }
    public void setValueAt(Object value, int row, int col) {
         p[row][col] = value;
    fireTableCellUpdated(row, col);
     }
    private void fireTableCellUpdated(int row, int col) {
// TODO Auto-generated method stub

} public void addTableModelListener(TableModelListener l){

    }
    public void removeTableModelListener(TableModelListener l){

    }
}

晕，我手误，少打了对括号：JTable table = new JTable();
TableSorter sorter = new TableSorter(table.getModel(), table.getTableHeader());
table.setModel(sorter);
你应该看得出那么明显的错误吧？？？

把你的代码稍微改了一下，一切运行正常：
/*
* ColumnModelTest.java
*
* Created on 2008-1-11, 下午08:30:11
*/
package com.enrising.table;import java.awt.BorderLayout;import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.event.TableModelListener;
import javax.swing.table.TableModel;public class ColumnModelTest extends JPanel {
public ColumnModelTest() {
super(new BorderLayout());
JTable table = new JTable(new MyTableModel());
add(new JScrollPane(table), BorderLayout.CENTER);
TableSorter ts = new TableSorter(table.getModel(), table.getTableHeader());
table.setModel(ts);
} public static void createAndShowGUI() {
JFrame f = new JFrame("ColumnModelTest");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.getContentPane().add(new ColumnModelTest(), BorderLayout.CENTER);
f.pack();
f.setVisible(true);
} public static void main(String args[]) {
javax.swing.SwingUtilities.invokeLater(new Runnable() { @Override
public void run() {
createAndShowGUI();
}
}); } public static class MyTableModel implements TableModel { Object[][] p = {
{
new Boolean(false), "人事部", "12311", "无名", "男", "19920103", "本科", "物理"
}, {
new Boolean(false), "人事部", "12312", "无名", "男", "19920103", "本科", "物理"
}, {
new Boolean(false), "人事部", "12313", "无名", "男", "19920103", "本科", "物理"
}, {
new Boolean(false), "人事部", "12314", "无名", "男", "19920103", "本科", "物理"
}
};
String[] n = {
"选择", "部门", "教师编码", "姓名", "性别", "生日", "最终学历", "研究领域"
}; public int getColumnCount() {
return n.length;
} public int getRowCount() {
return p.length;
} public String getColumnName(int col) {
return n[col];
} public Object getValueAt(int row, int col) {
return p[row][col];
} public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
} public boolean isCellEditable(int rowIndex, int columnIndex) {
return true;
} public void setValueAt(Object value, int row, int col) {
p[row][col] = value;
fireTableCellUpdated(row, col);
} private void fireTableCellUpdated(int row, int col) {
// TODO Auto-generated method stub } public void addTableModelListener(TableModelListener l) { } public void removeTableModelListener(TableModelListener l) { }
}}

我晕，老大我这样也不行！！import java.awt.BorderLayout;
import java.lang.Runnable.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.event.TableModelListener;
import javax.swing.table.TableModel;public class ColumnModelTest extends JPanel {
    public ColumnModelTest() {
        super(new BorderLayout());
        JTable table = new JTable(new MyTableModel());
        add(new JScrollPane(table), BorderLayout.CENTER);
        TableSorter ts = new TableSorter(table.getModel(), table.getTableHeader());//The constructor TableSorter(TableModel,JTableHeader)is undefined        table.setModel(ts);
    }    public static void createAndShowGUI() {
        JFrame f = new JFrame("ColumnModelTest");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(new ColumnModelTest(), BorderLayout.CENTER);
        f.pack();
        f.setVisible(true);
    }    public static void main(String args[]) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });    }    public static class MyTableModel implements TableModel {        Object[][] p = {
                {
                        new Boolean(false), "人事部", "12311", "无名", "男", "19920103", "本科", "物理"
                }, {
                        new Boolean(false), "人事部", "12312", "无名", "男", "19920103", "本科", "物理"
                }, {
                        new Boolean(false), "人事部", "12313", "无名", "男", "19920103", "本科", "物理"
                }, {
                        new Boolean(false), "人事部", "12314", "无名", "男", "19920103", "本科", "物理"
                }
        };
        String[] n = {
                "选择", "部门", "教师编码", "姓名", "性别", "生日", "最终学历", "研究领域"
        };        public int getColumnCount() {
            return n.length;
        }        public int getRowCount() {
            return p.length;
        }        public String getColumnName(int col) {
            return n[col];
        }        public Object getValueAt(int row, int col) {
            return p[row][col];
        }        public Class getColumnClass(int c) {
            return getValueAt(0, c).getClass();
        }        public boolean isCellEditable(int rowIndex, int columnIndex) {
            return true;
        }        public void setValueAt(Object value, int row, int col) {
            p[row][col] = value;
            fireTableCellUpdated(row, col);
        }        private void fireTableCellUpdated(int row, int col) {
            // TODO Auto-generated method stub        }        public void addTableModelListener(TableModelListener l) {        }        public void removeTableModelListener(TableModelListener l) {        }
    }}

import java.awt.BorderLayout;
import java.lang.Runnable.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.event.TableModelListener;
import javax.swing.table.TableModel;public class ColumnModelTest extends JPanel {
    public ColumnModelTest() {
        super(new BorderLayout());
        JTable table = new JTable(new MyTableModel());
        add(new JScrollPane(table), BorderLayout.CENTER);
        TableSorter ts = new TableSorter(table.getModel(), table.getTableHeader());
//The constructor TableSorter(TableModel,JTableHeader)is undefined
        table.setModel(ts);
    }    public static void createAndShowGUI() {
        JFrame f = new JFrame("ColumnModelTest");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(new ColumnModelTest(), BorderLayout.CENTER);
        f.pack();
        f.setVisible(true);
    }    public static void main(String args[]) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });    }    public static class MyTableModel implements TableModel {        Object[][] p = {
                {
                        new Boolean(false), "人事部", "12311", "无名", "男", "19920103", "本科", "物理"
                }, {
                        new Boolean(false), "人事部", "12312", "无名", "男", "19920103", "本科", "物理"
                }, {
                        new Boolean(false), "人事部", "12313", "无名", "男", "19920103", "本科", "物理"
                }, {
                        new Boolean(false), "人事部", "12314", "无名", "男", "19920103", "本科", "物理"
                }
        };
        String[] n = {
                "选择", "部门", "教师编码", "姓名", "性别", "生日", "最终学历", "研究领域"
        };        public int getColumnCount() {
            return n.length;
        }        public int getRowCount() {
            return p.length;
        }        public String getColumnName(int col) {
            return n[col];
        }        public Object getValueAt(int row, int col) {
            return p[row][col];
        }        public Class getColumnClass(int c) {
            return getValueAt(0, c).getClass();
        }        public boolean isCellEditable(int rowIndex, int columnIndex) {
            return true;
        }        public void setValueAt(Object value, int row, int col) {
            p[row][col] = value;
            fireTableCellUpdated(row, col);
        }        private void fireTableCellUpdated(int row, int col) {
            // TODO Auto-generated method stub        }        public void addTableModelListener(TableModelListener l) {        }        public void removeTableModelListener(TableModelListener l) {        }
    }}

不一定要放入同一个包内，你只需要将TableSorter的完整类名import进你要引用的类中就可以了

(风之幽谷),看您是个java老手啦，有个问题希望指教：
怎样给一个JXTreeTable写“ColumnSorter”呢，以至于一树表可按列排序？在网上查了很久，每发现可参考的资料。
多谢！

调试易

JTable的排序问题! 点击table各个列头, 然后table中的数据就会按所点列排序 (用jdk1.5)

解决方案 »