Swing完整实例 JTree右键菜单可拖拽JTable可翻页列中含有按钮隐藏列

1、首先来看一下展示界面，JTree的特点有：节点可拖拽，根据输入生成目录，右键有菜单，点击触发事件等                                           JTable的特点有：含有隐藏列，可以进行翻页，列中含有下载按钮等在来看一下代码吧，基本代码由Eclipse上的WindowBuilder进行拖拽式产生的，所以看起来有点乱，不过没事在使用Wind

2、owBuilder的时候要画JTree和JTable时要注意，这两个有几个共同点，必须放到JScrollPanel中，因为这两个控件的内容长度会发生突然变化，所以要使用JScrollPanel。BTW：如果要使用WindowBuidler，除了在Eclipse上安装插件，最方便的方法是直接下载含有该插件的Eclipse版本：package test;import java.awt.BorderLayout;import java.awt.Component;import java.awt.EventQueue;import java.awt.GridBagConstraints;import

3、java.awt.GridBagLayout;import java.awt.Insets;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;import java.util.List;import javax.swing.AbstractAction;import javax.swing.DefaultCellEditor;import javax.swing.JBu

4、tton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JPopupMenu;import javax.swing.JScrollPane;import javax.swing.JTabbedPane;import javax.swing.JTable;import javax.swing.JTextField;import javax.swing.JTree;import javax.swing.border.EmptyBorder;import

5、 javax.swing.table.AbstractTableModel;import javax.swing.table.TableCellRenderer;import javax.swing.tree.DefaultMutableTreeNode;public class InnerDocsMgt extends JFrame private static final long serialVersionUID = 1L;private JPanel contentPane;private JTable table;private JTree tree;private JLabel c

6、urrentDirLabel;private JLabel totalFilesNumLabel;private List<VEachFile> docFils;private final int maxFilesAPage = 50;private JLabel curPageLabel;private int curPageNum = 0;/* * Launch the application. */public static void main(String args) EventQueue.invokeLater(new Runnable() public void run

7、() try InnerDocsMgt frame = new InnerDocsMgt();frame.setVisible(true); catch (Exception e) e.printStackTrace(););/* * Create the frame. */public InnerDocsMgt() setTitle("u5185u90E8u8D44u6599u7BA1u7406");setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setBounds(100, 100, 450, 300);this.setSi

8、ze(800, 600);contentPane = new JPanel();contentPane.setBorder(new EmptyBorder(5, 5, 5, 5);contentPane.setLayout(new BorderLayout(0, 0);setContentPane(contentPane);JPanel panel = new JPanel();contentPane.add(panel, BorderLayout.WEST);GridBagLayout gbl_panel = new GridBagLayout();gbl_panel.columnWidth

9、s = new int 54, 0, 0, 0, 0, 0, 0, 0 ;gbl_panel.rowHeights = new int 31, 0, 0 ;gbl_panel.columnWeights = new double 1.0, 0.0, 0.0, 0.0, 0.0, 0.0,0.0, Double.MIN_VALUE ;gbl_panel.rowWeights = new double 0.0, 1.0, Double.MIN_VALUE ;panel.setLayout(gbl_panel);JLabel lblNewLabel = new JLabel("u5185u

10、90E8u8D44u6599u76EEu5F55u5217u8868");GridBagConstraints gbc_lblNewLabel = new GridBagConstraints();gbc_lblNewLabel.gridwidth = 5;gbc_lblNewLabel.insets = new Insets(0, 0, 5, 5);gbc_lblNewLabel.gridx = 0;gbc_lblNewLabel.gridy = 0;panel.add(lblNewLabel, gbc_lblNewLabel);JButton button_4 = new JBu

11、tton("u4FDDu5B58u76EEu5F55u64CDu4F5C");GridBagConstraints gbc_button_4 = new GridBagConstraints();gbc_button_4.insets = new Insets(0, 0, 5, 5);gbc_button_4.gridx = 5;gbc_button_4.gridy = 0;panel.add(button_4, gbc_button_4);JScrollPane scrollPane = new JScrollPane();GridBagConstraints gbc_s

12、crollPane = new GridBagConstraints();gbc_scrollPane.gridwidth = 7;gbc_scrollPane.fill = GridBagConstraints.BOTH;gbc_scrollPane.gridx = 0;gbc_scrollPane.gridy = 1;panel.add(scrollPane, gbc_scrollPane);DefaultMutableTreeNode top = new DefaultMutableTreeNode("/");createNodes(top);tree = new J

13、Tree(top);scrollPane.setViewportView(tree);tree.setEditable(true);tree.setDragEnabled(true);this.setPopupMenu();try tree.setTransferHandler(new DocsTreeTransferHanlder(); catch (ClassNotFoundException e) e.printStackTrace();JPanel panel_1 = new JPanel();contentPane.add(panel_1, BorderLayout.CENTER);

14、GridBagLayout gbl_panel_1 = new GridBagLayout();gbl_panel_1.columnWidths = new int 708, 0 ;gbl_panel_1.rowHeights = new int 556, 0 ;gbl_panel_1.columnWeights = new double 1.0, Double.MIN_VALUE ;gbl_panel_1.rowWeights = new double 1.0, Double.MIN_VALUE ;panel_1.setLayout(gbl_panel_1);JTabbedPane tabb

15、edPane = new JTabbedPane(JTabbedPane.TOP);GridBagConstraints gbc_tabbedPane = new GridBagConstraints();gbc_tabbedPane.fill = GridBagConstraints.BOTH;gbc_tabbedPane.gridx = 0;gbc_tabbedPane.gridy = 0;panel_1.add(tabbedPane, gbc_tabbedPane);JPanel panel_2 = new JPanel();tabbedPane.addTab("u6587u4

16、EF6u4E0Eu76EEu5F55u7BA1u7406", null,panel_2, null);GridBagLayout gbl_panel_2 = new GridBagLayout();gbl_panel_2.columnWidths = new int 166, 59, 0, 0, 0, 0, 0 ;gbl_panel_2.rowHeights = new int 30, 0, 49, 0, 0, 0 ;gbl_panel_2.columnWeights = new double 1.0, 0.0, 0.0, 0.0, 0.0,0.0, Double.MIN_VALUE

17、 ;gbl_panel_2.rowWeights = new double 0.0, 0.0, 1.0, 0.0, 0.0,Double.MIN_VALUE ;panel_2.setLayout(gbl_panel_2);currentDirLabel = new JLabel("u5F53u524Du76EEu5F55uFF1Aone->two->three");GridBagConstraints gbc_lblonetwothree = new GridBagConstraints();gbc_lblonetwothree.gridwidth = 6;gb

18、c_lblonetwothree.anchor = GridBagConstraints.WEST;gbc_lblonetwothree.insets = new Insets(0, 0, 5, 0);gbc_lblonetwothree.gridx = 0;gbc_lblonetwothree.gridy = 0;panel_2.add(currentDirLabel, gbc_lblonetwothree);JButton button_3 = new JButton("u5168u9009/u5168u4E0Du9009");GridBagConstraints gb

19、c_button_3 = new GridBagConstraints();gbc_button_3.insets = new Insets(0, 0, 5, 5);gbc_button_3.gridx = 3;gbc_button_3.gridy = 1;panel_2.add(button_3, gbc_button_3);JButton button = new JButton("u5220u9664");GridBagConstraints gbc_button = new GridBagConstraints();gbc_button.insets = new I

20、nsets(0, 0, 5, 5);gbc_button.gridx = 4;gbc_button.gridy = 1;panel_2.add(button, gbc_button);JButton button_1 = new JButton("u79FBu52A8u5230");button_1.setToolTipText("u8BF7u5148u9009u62E9u8981u79FBu52A8u7684u6587u4EF6uFF0Cu7136u540Eu518Du9009u62E9u4E00u4E2Au5DE6u4FA7u76EEu5F55");

21、GridBagConstraints gbc_button_1 = new GridBagConstraints();gbc_button_1.insets = new Insets(0, 0, 5, 0);gbc_button_1.gridx = 5;gbc_button_1.gridy = 1;panel_2.add(button_1, gbc_button_1);JScrollPane scrollPane_1 = new JScrollPane();GridBagConstraints gbc_scrollPane_1 = new GridBagConstraints();gbc_sc

22、rollPane_1.gridwidth = 6;gbc_scrollPane_1.insets = new Insets(0, 0, 5, 0);gbc_scrollPane_1.fill = GridBagConstraints.BOTH;gbc_scrollPane_1.gridx = 0;gbc_scrollPane_1.gridy = 2;panel_2.add(scrollPane_1, gbc_scrollPane_1);String headNames = new String "u9009u62E9","u6587u4EF6u540D"

23、, "u5927u5C0FuFF08KBuFF09","u6587u4EF6u65E5u671F", "u4F5Cu8005", "", "u4E0Bu8F7D" ;Object tableDatas = new Object507;for (int i = 0; i < 50; i+) for (int j = 0; j < 7; j+) tableDatasij = null;table = new JTable(new DocsTableModel(headNames, tab

24、leDatas);table.getColumnModel().getColumn(0).setCellEditor(table.getDefaultEditor(Boolean.class);table.getColumnModel().getColumn(0).setCellRenderer(table.getDefaultRenderer(Boolean.class);table.getColumnModel().getColumn(0).setPreferredWidth(38);table.getColumnModel().getColumn(1).setPreferredWidth

25、(206);table.getColumnModel().getColumn(2).setPreferredWidth(53);table.getColumnModel().getColumn(3).setPreferredWidth(134);table.getColumnModel().getColumn(4).setPreferredWidth(58);/ hide the 5th column,it contans the filepathtable.getTableHeader().getColumnModel().getColumn(5).setMaxWidth(0);/ hide

26、table.getTableHeader().getColumnModel().getColumn(5).setMinWidth(0);/ hidetable.getTableHeader().getColumnModel().getColumn(5).setPreferredWidth(0);table.getTableHeader().getColumnModel().getColumn(5).setWidth(0);table.getColumnModel().getColumn(6).setCellRenderer(new ButtonCellRenderer();table.getC

27、olumnModel().getColumn(6).setCellEditor(new ButtonCellEditor(table);scrollPane_1.setViewportView(table);totalFilesNumLabel = new JLabel("u6587u4EF6u603Bu6570uFF1A0");GridBagConstraints gbc_totalFilesNumLabel = new GridBagConstraints();gbc_totalFilesNumLabel.anchor = GridBagConstraints.WEST

28、;gbc_totalFilesNumLabel.insets = new Insets(0, 0, 0, 5);gbc_totalFilesNumLabel.gridx = 0;gbc_totalFilesNumLabel.gridy = 4;panel_2.add(totalFilesNumLabel, gbc_totalFilesNumLabel);curPageLabel = new JLabel("u5F53u524Du9875u6570uFF1A0| u603Bu9875u6570uFF1A0");GridBagConstraints gbc_curPageLab

29、el = new GridBagConstraints();gbc_curPageLabel.gridwidth = 2;gbc_curPageLabel.insets = new Insets(0, 0, 0, 5);gbc_curPageLabel.gridx = 2;gbc_curPageLabel.gridy = 4;panel_2.add(curPageLabel, gbc_curPageLabel);JButton btnNewButton = new JButton("u4E0Au4E00u9875");btnNewButton.addActionListen

30、er(new ActionListener() public void actionPerformed(ActionEvent e) prePage(););GridBagConstraints gbc_btnNewButton = new GridBagConstraints();gbc_btnNewButton.insets = new Insets(0, 0, 0, 5);gbc_btnNewButton.gridx = 4;gbc_btnNewButton.gridy = 4;panel_2.add(btnNewButton, gbc_btnNewButton);JButton but

31、ton_2 = new JButton("u4E0Bu4E00u9875");button_2.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) nextPage(););GridBagConstraints gbc_button_2 = new GridBagConstraints();gbc_button_2.gridx = 5;gbc_button_2.gridy = 4;panel_2.add(button_2, gbc_button_2);JPanel

32、 panel_3 = new JPanel();tabbedPane.addTab("u7F16u8F91u6587u6863", null, panel_3, null);GridBagLayout gbl_panel_3 = new GridBagLayout();gbl_panel_3.columnWidths = new int 0 ;gbl_panel_3.rowHeights = new int 0 ;gbl_panel_3.columnWeights = new double Double.MIN_VALUE ;gbl_panel_3.rowWeights =

33、 new double Double.MIN_VALUE ;panel_3.setLayout(gbl_panel_3);private void createNodes(DefaultMutableTreeNode top) List<DefaultMutableTreeNode> nodes = DocsMgtRmi.getINS().getFirstLevelDirs();for (DefaultMutableTreeNode one : nodes) top.add(one);public void setPopupMenu() final JPopupMenu pop =

34、 new JPopupMenu();pop.add(new AbstractAction("添加子目录") private static final long serialVersionUID = 1L;public void actionPerformed(ActionEvent e) System.out.println("Tree Add"););pop.add(new AbstractAction("删除目录") private static final long serialVersionUID = 1L;public vo

35、id actionPerformed(ActionEvent e) System.out.println("Delete"););tree.addMouseListener(new MouseAdapter() Overridepublic void mouseReleased(MouseEvent e) if (e.isMetaDown() pop.show(tree, e.getX(), e.getY();public void mouseClicked(MouseEvent evt) if (evt.getClickCount() = 1) VEachDir eDir

36、 = (VEachDir) getSelectedNode().getUserObject();docFils = DocsMgtRmi.getINS().getFilesViaDirid(eDir.getDirId();int filesNum = docFils.size();currentDirLabel.setText("u5F53u524Du76EEu5F55uFF1Aone->two->three,=>DirID:"+ eDir.getDirId();totalFilesNumLabel.setText("u6587u4EF6u603

37、Bu6570uFF1A"+ filesNum);int maxNum = Math.min(maxFilesAPage, filesNum);if (filesNum <= maxFilesAPage) curPageLabel.setText("u5F53u524Du9875u6570uFF1A 1 | u603Bu9875u6570uFF1A 1"); else int totalNum = filesNum / maxFilesAPage;if (totalNum * maxFilesAPage < filesNum) totalNum+;cur

38、PageLabel.setText("u5F53u524Du9875u6570uFF1A 1 | u603Bu9875u6570uFF1A "+ totalNum);curPageNum = 0;setDocTableValues(docFils.subList(0, maxNum););public void prePage() if (this.curPageNum <= 0) return;int filesNum = docFils.size();curPageNum-;int totalPage = filesNum / maxFilesAPage;if (

39、totalPage * maxFilesAPage < filesNum) totalPage+;curPageLabel.setText("u5F53u524Du9875u6570uFF1A " + (curPageNum + 1)+ " | u603Bu9875u6570uFF1A " + totalPage);setDocTableValues(docFils.subList(curPageNum * maxFilesAPage,Math.min(curPageNum + 1) * maxFilesAPage, filesNum);publi

40、c void nextPage() int filesNum = docFils.size();int totalPage = filesNum / maxFilesAPage;if (totalPage * maxFilesAPage < filesNum) totalPage+;if (curPageNum >= totalPage - 1) return;curPageNum+;setDocTableValues(docFils.subList(curPageNum * maxFilesAPage,Math.min(curPageNum + 1) * maxFilesAPag

41、e, filesNum);curPageLabel.setText("u5F53u524Du9875u6570uFF1A " + (curPageNum + 1)+ " | u603Bu9875u6570uFF1A " + totalPage);public void setDocTableValues(List<VEachFile> subDocs) int i = 0;for (; i < subDocs.size(); i+) table.getModel().setValueAt(false, i, 0);table.getMo

42、del().setValueAt(subDocs.get(i).getFileName(), i, 1);table.getModel().setValueAt(subDocs.get(i).getFileSize(), i, 2);table.getModel().setValueAt(subDocs.get(i).getFileDate().toLocaleString(), i, 3);table.getModel().setValueAt(subDocs.get(i).getFileAuthor(), i, 4);table.getModel().setValueAt(subDocs.

43、get(i).getFilePath(), i, 5);if (subDocs.size() < maxFilesAPage) for (; i < maxFilesAPage; i+) table.getModel().setValueAt(false, i, 0);table.getModel().setValueAt(null, i, 1);table.getModel().setValueAt(null, i, 2);table.getModel().setValueAt(null, i, 3);table.getModel().setValueAt(null, i, 4)

44、;table.getModel().setValueAt(null, i, 5);table.updateUI();table.repaint();public DefaultMutableTreeNode getSelectedNode() return (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();class DocsTableModel extends AbstractTableModel private String headName;private Object obj;private Class colum

45、nTypes = new Class Boolean.class,Object.class, Object.class, Object.class, Object.class,Object.class, Object.class ;public DocsTableModel() super();public DocsTableModel(String headName, Object obj) this();this.headName = headName;this.obj = obj;public int getColumnCount() return headName.length;pub

46、lic int getRowCount() return obj.length;public Object getValueAt(int r, int c) return objrc;public String getColumnName(int c) return headNamec;public Class<?> getColumnClass(int columnIndex) return columnTypescolumnIndex.getClass();Overridepublic boolean isCellEditable(int rowIndex, int colum

47、nIndex) return true;public void setValueAt(Object value, int row, int col) objrowcol = value;fireTableCellUpdated(row, col);class ButtonCellEditor extends DefaultCellEditor private static final long serialVersionUID = -6546334664166791132L;private JButton button;private JTable table;public ButtonCel

48、lEditor(JTable table) super(new JTextField();this.setClickCountToStart(1);this.initButton();this.table = table;private void initButton() this.button = new JButton();this.button.setSize(50, 15);this.button.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) ButtonCellEdi

49、tor.this.fireEditingCanceled();System.out.println("Selected Column:"+ table.getSelectedColumn()+ ",row:"+ table.getSelectedRow()+ ",and filePath:"+ table.getModel().getValueAt(table.getSelectedRow(), 5););Overridepublic Component getTableCellEditorComponent(JTable table

50、, Object value,boolean isSelected, int row, int column) this.button.setText("下载");return this.button;Overridepublic Object getCellEditorValue() return this.button.getText();class ButtonCellRenderer implements TableCellRenderer private JButton button;public ButtonCellRenderer() this.button

51、= new JButton();public Component getTableCellRendererComponent(JTable table, Object value,boolean isSelected, boolean hasFocus, int row, int column) this.button.setText("下载");return this.button;关于上面的TableCellRenderer子类和CellEditor子类，这两个都被设置到table的ColumnModel中了， ButtonCellRenderer在每次GUI渲染的时候

52、都会调用，ButtonCellEditor只会在点击到这个Cell的时候才会调用，并且如果失去焦点后return的Component将消失，所以ButtonCellRenderer这个很重要。table.getColumnModel().getColumn(7).setCellRenderer(new ButtonCellRenderer();table.getColumnModel().getColumn(7).setCellEditor(new ButtonCellEditor(table); 可以在ButtonCellRenderer中加上一些逻辑，用来判断是否显示按钮，比如在

53、初始化的时候不要显示按钮，比如可以可以根据隐藏列的值显示按钮，只要修改getTableRenderComponent方法即可。public Component getTableCellRendererComponent(JTable table, Object value,boolean isSelected, boolean hasFocus, int row, int column) String filePath = (String) table.getModel().getValueAt(row, 7);if (filePath = null) return null; else this.button.setText("下载");return this.button;下面讲一下支持Tree拖拽的事件响应器DocsTreeTransferHanlder，TransferHanlder用来处理Transferable一个Swing Component对象上的transfer to和from，就是拖拽，而Transferable对象代表通过剪切到，拷贝自剪贴板上的数据对象。这几个对象被用来实现拖拽，TansferHanlder对拖拽支持良好，开发者只需要实现一个具体的Transfer对象，然后将hanld