JTable单元格放自定义控件（一）-如何在JTable的单元格放JPanel

原文链接：http://blog.sina.com.cn/s/blog_7f1c8c710101hdpf.html
最近自己尝试着模仿着实现一款非常有名的进销库存管理系统（智慧记）里面的一个功能。功能如下下图所示。
JTable tableA的第一列（品名规格）放的是自定义JPanel控件，JPanel上面放的是JTextfield和JButton,点击每一行第一列的JButton会弹出弹出一个JDialog，选择JDialog上面表格tableB的多行数据，插入到表格tableA里去。
1、一开始的表格tableA如下

2、点击JButton后界面如下

3、选中tableB的多行数据

4、点击确定的时候一次性插入选中的数据到tableA中

这个问题我首先查了jdk文档，发现API里并没有提供一种方法可以直接实现这个操作，于是上网查了很长时间资料，最后终于解决了这个问题，下面我详细的谈谈我实现这个功能的过程，并提供我实现这个功能的可以直接运行的源代码。
要解决这个问题，要先弄清楚TableModel、TableCellRenderer、TableCellEditor接口的作用，
TableModel为JTable提供显示的数据、维数、表格中的数据类型、显示的列标题以及单元格·是否允许被编辑用的。TableCellRenderer（单元格渲染器）接口，就是用来绘制展示当前cell单元数值内容的，你可以用文字、数值或者图片来表示内容，我们现在要绘制的就是一个带有一个JButton和一个JTextField的JPanel。就是上图tableA里的那个第一列的自定义控件。TableCellEditor（单元格编辑器）接口，主要是用来当用户点击在具体cell时进行编辑的组件，所以TableCellEditor除了具有TableCellRenderer一样的绘制功能外还可以进行交互动作，例如在cell上出现下拉框、勾选框甚至通过按钮弹出更复杂的对话框让用户进行输入编辑。我们现在就是要通过这个接口，实现给单元格里的JButton添加事件，从而使其能够弹出上图那个JDialog。

实现这个功能我用了3个类。大家先运行下下面的代码，然后在代码后面，我尝试着讲解了是如何一步步得到最后这段可以运行的代码的。
JTableTestCellEdit完整的代码如下：

package specialtable;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.EventObject;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.event.CellEditorListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.EventListenerList;
import javax.swing.table.TableCellEditor;
public class JTableTestCellEdit extends JPanel implements TableCellEditor,ActionListener{private static final long serialVersionUID = 5860619160549087886L; //EventListenerList:保存EventListener 列表的类。 private EventListenerList listenerList = new EventListenerList(); //ChangeEvent用于通知感兴趣的参与者事件源中的状态已发生更改。 private ChangeEvent changeEvent = new ChangeEvent(this); JButton edit_btn;JTextField edit_txf;JTableTest jTableTest;public JTableTestCellEdit(){ super();setLayout(new BorderLayout());edit_btn = new JButton("...");edit_txf = new JTextField();add(edit_txf);add(edit_btn,BorderLayout.EAST);edit_btn.setBackground(Color.white);edit_btn.setPreferredSize(new Dimension(20,getHeight()));edit_btn.addActionListener(this);} JTableTestCellEdit(JTableTest jTableTest){this();this.jTableTest = jTableTest;}public void addCellEditorListener(CellEditorListener l) { listenerList.add(CellEditorListener.class,l); } public void removeCellEditorListener(CellEditorListener l) { listenerList.remove(CellEditorListener.class,l); } private void fireEditingStopped(){ CellEditorListener listener; Object[]listeners = listenerList.getListenerList(); for(int i = 0; i < listeners.length; i++){ if(listeners[i]== CellEditorListener.class){ //之所以是i+1，是因为一个为CellEditorListener.class（Class对象）， //接着的是一个CellEditorListener的实例 listener= (CellEditorListener)listeners[i+1]; //让changeEvent去通知编辑器已经结束编辑 //          //在editingStopped方法中，JTable调用getCellEditorValue()取回单元格的值， //并且把这个值传递给TableValues(TableModel)的setValueAt() listener.editingStopped(changeEvent); } } } public void cancelCellEditing() {          } public boolean stopCellEditing() { //可以注释掉下面的fireEditingStopped();，然后在GenderEditor的构造函数中把 //addActionListener()的注释去掉（这时请求终止编辑操作从JComboBox获得）， System.out.println("编辑其中一个单元格，再点击另一个单元格时，调用。"); fireEditingStopped();//请求终止编辑操作从JTable获得 return true; } public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) { if(value != null)edit_txf.setText(value.toString());return this; } public boolean isCellEditable(EventObject anEvent) { return true; } public boolean shouldSelectCell(EventObject anEvent) { return true; } public Object getCellEditorValue() { return edit_txf.getText(); } public void actionPerformed(ActionEvent e){Point p = edit_btn.getLocation();new JTableTestDialog(100,180,this,jTableTest).setVisible(true);}
}

JTableTest 类的完整代码如下：

package specialtable;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
public class JTableTest extends JFrame{String[] columnNames = {"名称及规格","零数","件数","数量","单位","件价","单价","金额","备注"};JTable tableA;public Object[][] values = { {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""} };DefaultTableModel model = new DefaultTableModel(values,columnNames);public JTableTest(){setBounds(100,100,800,400);tableA = new JTable(model);tableA.setRowHeight(30);JScrollPane scrollPane = new JScrollPane(tableA);DefaultTableColumnModel dcm = (DefaultTableColumnModel)tableA.getColumnModel();dcm.getColumn(0).setPreferredWidth(200);//调用我们刚才自己改写后的TableCellRenderer接口JTableTestRendererTableColumnModel tcm= tableA.getColumnModel(); TableColumn tc = tcm.getColumn(0); tc.setCellRenderer(new JTableTestRenderer());//调用我们刚才自己改写后的TableCellEditor接口JTableTestCellEditortc.setCellEditor(new JTableTestCellEdit(this)); add(scrollPane);setVisible(true);}public static void main(String[] args){new JTableTest();}public void getTable(DefaultTableModel model){tableA.setModel(model);TableColumnModel tcm= tableA.getColumnModel();TableColumn tc = tcm.getColumn(0);tc.setCellRenderer(new JTableTestRenderer());tc.setCellEditor(new JTableTestCellEdit(this)); tableA.setColumnSelectionAllowed(false);tableA.setRowSelectionAllowed(false);tcm.getColumn(0).setPreferredWidth(200); tableA.repaint();}
}

JTableTestDialog类的完整代码如下：

package specialtable;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.Statement;
import java.util.Iterator;
import java.util.Vector;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.DefaultTableModel;public class JTableTestDialog extends JDialog implements ActionListener{String[] colunmNames = {"厂商","名称及规格","零数","件数"};public Object[][] values = { {"京东","电器","12","13"}, {"淘宝","电脑","15","16"}, {"当当","书籍","13","26"}, {"拍拍","qq","15","96"}, {"亚马逊","书","12","18"} };DefaultTableModel model = new DefaultTableModel(values,colunmNames);JTable tableB;JScrollPane scrollPane;JLabel tip_lbl =new JLabel("按ctrl或shift可多选货品");JButton ok = new JButton("确定");JPanel centerPanel = new JPanel();JPanel southPanel = new JPanel();JTableTestCellEdit jTableTestCellEdit;JTableTest jTableTest;public JTableTestDialog(int x,int y){setBounds(x,y,400,300);tableB = new JTable(model);scrollPane = new JScrollPane(tableB);scrollPane.setSize(400, 280);southPanel.add(tip_lbl,BorderLayout.WEST);southPanel.add(ok,BorderLayout.EAST);ok.addActionListener(this);add(scrollPane,BorderLayout.CENTER);add(southPanel,BorderLayout.SOUTH);}public JTableTestDialog(int x,int y,JTableTestCellEdit jTableTestCellEdit,JTableTest jTableTest){this(x,y);this.jTableTestCellEdit = jTableTestCellEdit;this.jTableTest = jTableTest;}public void actionPerformed(ActionEvent e){ if(jTableTestCellEdit != null && jTableTest != null){String[] columnNames = {"名称及规格","零数","件数","数量","单位","件价","单价","金额","备注"};DefaultTableModel model2 = new DefaultTableModel(columnNames,0);int[] rows = tableB.getSelectedRows();for(int i = 0; i < rows.length; i++){Vector v = new Vector();v.add(tableB.getValueAt(rows[i], 0));v.add(tableB.getValueAt(rows[i], 1));v.add(tableB.getValueAt(rows[i], 2));v.add(tableB.getValueAt(rows[i], 3));v.add("");v.add("");v.add("");v.add("");v.add("");model2.addRow(v);}for(int i = 0; i < 5;i++){Vector v = new Vector();v.add("");v.add("");v.add("");v.add("");v.add("");v.add("");v.add("");v.add("");v.add("");model2.addRow(v);}jTableTest.getTable(model2);dispose();   }}
}

代码的实现过程。
首先我们在一个窗口里写出tableA代码如下。

package specialtable;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.DefaultTableModel;
public class JTableTest extends JFrame{String[] columnNames = {"名称及规格","零数","件数","数量","单位","件价","单价","金额","备注"};JTable tableA;public Object[][] values = { {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""} };DefaultTableModel model = new DefaultTableModel(values,columnNames);public JTableTest(){setBounds(100,100,800,400);tableA = new JTable(model);tableA.setRowHeight(30);JScrollPane scrollPane = new JScrollPane(tableA);DefaultTableColumnModel dcm = (DefaultTableColumnModel)tableA.getColumnModel();dcm.getColumn(0).setPreferredWidth(200);add(scrollPane);setVisible(true);}public static void main(String[] args){new JTableTest();}
}

此时运行结果如下：

我们得到了最简单的表格。
接下来我们要改写TableCellRenderer,代码如下：

package specialtable;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.TableCellRenderer;public class JTableTestRenderer extends JPanel implements TableCellRenderer {JButton edit_btn;JTextField edit_txf;public JTableTestRenderer(){ super();setLayout(new BorderLayout());edit_btn = new JButton("...");edit_txf = new JTextField();add(edit_txf);add(edit_btn,BorderLayout.EAST);edit_btn.setBackground(Color.white);edit_btn.setPreferredSize(new Dimension(20,getHeight()));} public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { if(isSelected){ setForeground(table.getForeground()); super.setBackground(table.getBackground()); }else{ setForeground(table.getForeground()); setBackground(table.getBackground()); } if(value != null)edit_txf.setText(value.toString());return this; }
}

//在类JTableTest调用我们刚才自己改写后的TableCellRenderer接口JTableTestRenderer
TableColumnModel tcm= tableA.getColumnModel();
TableColumn tc = tcm.getColumn(0);
tc.setCellRenderer(new JTableTestRenderer());
此时，完整JTableTest类的完整代码如下：

package specialtable;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
public class JTableTest extends JFrame{String[] columnNames = {"名称及规格","零数","件数","数量","单位","件价","单价","金额","备注"};JTable tableA;public Object[][] values = { {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""} };DefaultTableModel model = new DefaultTableModel(values,columnNames);public JTableTest(){setBounds(100,100,800,400);tableA = new JTable(model);tableA.setRowHeight(30);JScrollPane scrollPane = new JScrollPane(tableA);DefaultTableColumnModel dcm = (DefaultTableColumnModel)tableA.getColumnModel();dcm.getColumn(0).setPreferredWidth(200);//调用我们刚才自己改写后的TableCellRenderer接口JTableTestRendererTableColumnModel tcm= tableA.getColumnModel(); TableColumn tc = tcm.getColumn(0); tc.setCellRenderer(new JTableTestRenderer());add(scrollPane);setVisible(true);}public static void main(String[] args){new JTableTest();}
}

此时运行结果如下，看看第一列似乎已经变成我们需要的样子了。

我们先写出接下来要弹出的JDialog类JTableTestDialog ，代码如下：

package specialtable;
import java.awt.BorderLayout;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.DefaultTableModel;public class JTableTestDialog extends JDialog{String[] colunmNames = {"厂商","名称及规格","零数","件数"};public Object[][] values = { {"京东","电器","12","13"}, {"淘宝","电脑","15","16"}, {"当当","书籍","13","26"}, {"拍拍","qq","15","96"}, {"亚马逊","书","12","18"} };DefaultTableModel model = new DefaultTableModel(values,colunmNames);JTable tableB;JScrollPane scrollPane;JLabel tip_lbl =new JLabel("按ctrl或shift可多选货品");JButton ok = new JButton("确定");;JPanel centerPanel = new JPanel();JPanel southPanel = new JPanel();public JTableTestDialog(int x,int y){setBounds(x,y,400,300);tableB = new JTable(model);scrollPane = new JScrollPane(tableB);scrollPane.setSize(400, 280);southPanel.add(tip_lbl,BorderLayout.WEST);southPanel.add(ok,BorderLayout.EAST);add(scrollPane,BorderLayout.CENTER);add(southPanel,BorderLayout.SOUTH);}
}

接下来我们改写TableCellEditor接口：

package specialtable;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.EventObject;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.event.CellEditorListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.EventListenerList;
import javax.swing.table.TableCellEditor;
public class JTableTestCellEdit extends JPanel implements TableCellEditor,ActionListener{private static final long serialVersionUID = 5860619160549087886L; //EventListenerList:保存EventListener 列表的类。 private EventListenerList listenerList = new EventListenerList(); //ChangeEvent用于通知感兴趣的参与者事件源中的状态已发生更改。 private ChangeEvent changeEvent = new ChangeEvent(this); JButton edit_btn;JTextField edit_txf;public JTableTestCellEdit(){ super();setLayout(new BorderLayout());edit_btn = new JButton("...");edit_txf = new JTextField();add(edit_txf);add(edit_btn,BorderLayout.EAST);edit_btn.setBackground(Color.white);edit_btn.setPreferredSize(new Dimension(20,getHeight()));edit_btn.addActionListener(this);    //给单元格的JButton添加ActionListener，以便于弹出JDialog} public void addCellEditorListener(CellEditorListener l) { listenerList.add(CellEditorListener.class,l); } public void removeCellEditorListener(CellEditorListener l) { listenerList.remove(CellEditorListener.class,l); } private void fireEditingStopped(){ CellEditorListener listener; Object[]listeners = listenerList.getListenerList(); for(int i = 0; i < listeners.length; i++){ if(listeners[i]== CellEditorListener.class){ //之所以是i+1，是因为一个为CellEditorListener.class（Class对象）， //接着的是一个CellEditorListener的实例 listener= (CellEditorListener)listeners[i+1]; //让changeEvent去通知编辑器已经结束编辑 //          //在editingStopped方法中，JTable调用getCellEditorValue()取回单元格的值， //并且把这个值传递给TableValues(TableModel)的setValueAt() listener.editingStopped(changeEvent); } } } public void cancelCellEditing() {          } public boolean stopCellEditing() { //可以注释掉下面的fireEditingStopped();，然后在GenderEditor的构造函数中把 //addActionListener()的注释去掉（这时请求终止编辑操作从JComboBox获得）， System.out.println("编辑其中一个单元格，再点击另一个单元格时，调用。"); fireEditingStopped();//请求终止编辑操作从JTable获得 return true; } public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) { if(value != null)edit_txf.setText(value.toString());return this; } public boolean isCellEditable(EventObject anEvent) { return true; } public boolean shouldSelectCell(EventObject anEvent) { return true; } public Object getCellEditorValue() { return edit_txf.getText(); } public void actionPerformed(ActionEvent e){new JTableTestDialog(100,180).setVisible(true);}
}

此时在JTableTest中调用我们刚才自己改写后的TableCellEditor接口JTableTestCellEditor
调用后的的完整代码如下：

package specialtable;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
public class JTableTest extends JFrame{String[] columnNames = {"名称及规格","零数","件数","数量","单位","件价","单价","金额","备注"};JTable tableA;public Object[][] values = { {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""} };DefaultTableModel model = new DefaultTableModel(values,columnNames);public JTableTest(){setBounds(100,100,800,400);tableA = new JTable(model);tableA.setRowHeight(30);JScrollPane scrollPane = new JScrollPane(tableA);DefaultTableColumnModel dcm = (DefaultTableColumnModel)tableA.getColumnModel();dcm.getColumn(0).setPreferredWidth(200);//调用我们刚才自己改写后的TableCellRenderer接口JTableTestRendererTableColumnModel tcm= tableA.getColumnModel(); TableColumn tc = tcm.getColumn(0); tc.setCellRenderer(new JTableTestRenderer());//调用我们刚才自己改写后的TableCellEditor接口JTableTestCellEditortc.setCellEditor(new JTableTestCellEdit()); add(scrollPane);setVisible(true);}public static void main(String[] args){new JTableTest();}
}

运行结果如下：

此时是不是更加接近我们想要的效果了。但是如何实现最后一部功能呢。即，在JTableTestDialog中选择多行数据插入表格tableA。
我们可以将数据先写入TableModel中，由于这个过程是弹出JTableTestDialog后完成的，而最终的结果写在了tableA里，因此，需要把JTableTest当前对象传给给JTableTestDialog，而JTableTestDialog是在点击了JTableTestCellEdit的JButton之后弹出来的，而JTableTestCellEdit是在JTableTest里调用的，因此可以JTableTest通过把当前对象先传给JTableTestCellEdit对象，然后在弹出JDialog后通过JTableTestCellEdit对象和JTableTestCellEdit同时传给JDialog对象。然后在JDialog对象里将数据传到JTableTest对象的tableModel里去。因此我们分别要在这些类里添加一些构造方法，以便实现对象的传递。这个过程似乎有点复杂，我不确定自己讲清楚了没有，不多说了，直接看代码吧，这样最直接。
在JTableTestCellEdit里添加一个如下构造方法，以便于将JTableTest对象传进来。

JTableTestCellEdit(JTableTest jTableTest){this();this.jTableTest = jTableTest;}

此时JTableTest里的调用变成如下所示，将自己传给TableCellEditor对象。
//调用我们刚才自己改写后的TableCellEditor接口JTableTestCellEditor
tc.setCellEditor(new JTableTestCellEdit(this));
JTableTestDialog里需要添加如下构造方法，以便于接收传进来的JTableTestCellEdit对象，和传给JTableTestCellEdit的JTableTest对象。

public JTableTestDialog(int x,int y,JTableTestCellEdit jTableTestCellEdit,JTableTest jTableTest){this(x,y);this.JTableTestCellEdit = JTableTestCellEdit;this.jTableTest = jTableTest;}

此时JTableTestCellEdit对象的监视器里应该通过如下语句完成传值，
new JTableTestDialog(100,180,this,jTableTest).setVisible(true);
JTableTestCellEdit完整的代码如下：

package specialtable;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.EventObject;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.event.CellEditorListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.EventListenerList;
import javax.swing.table.TableCellEditor;
public class JTableTestCellEdit extends JPanel implements TableCellEditor,ActionListener{private static final long serialVersionUID = 5860619160549087886L; //EventListenerList:保存EventListener 列表的类。 private EventListenerList listenerList = new EventListenerList(); //ChangeEvent用于通知感兴趣的参与者事件源中的状态已发生更改。 private ChangeEvent changeEvent = new ChangeEvent(this); JButton edit_btn;JTextField edit_txf;JTableTest jTableTest;public JTableTestCellEdit(){ super();setLayout(new BorderLayout());edit_btn = new JButton("...");edit_txf = new JTextField();add(edit_txf);add(edit_btn,BorderLayout.EAST);edit_btn.setBackground(Color.white);edit_btn.setPreferredSize(new Dimension(20,getHeight()));edit_btn.addActionListener(this);} JTableTestCellEdit(JTableTest jTableTest){this();this.jTableTest = jTableTest;}public void addCellEditorListener(CellEditorListener l) { listenerList.add(CellEditorListener.class,l); } public void removeCellEditorListener(CellEditorListener l) { listenerList.remove(CellEditorListener.class,l); } private void fireEditingStopped(){ CellEditorListener listener; Object[]listeners = listenerList.getListenerList(); for(int i = 0; i < listeners.length; i++){ if(listeners[i]== CellEditorListener.class){ //之所以是i+1，是因为一个为CellEditorListener.class（Class对象）， //接着的是一个CellEditorListener的实例 listener= (CellEditorListener)listeners[i+1]; //让changeEvent去通知编辑器已经结束编辑 //          //在editingStopped方法中，JTable调用getCellEditorValue()取回单元格的值， //并且把这个值传递给TableValues(TableModel)的setValueAt() listener.editingStopped(changeEvent); } } } public void cancelCellEditing() {          } public boolean stopCellEditing() { //可以注释掉下面的fireEditingStopped();，然后在GenderEditor的构造函数中把 //addActionListener()的注释去掉（这时请求终止编辑操作从JComboBox获得）， System.out.println("编辑其中一个单元格，再点击另一个单元格时，调用。"); fireEditingStopped();//请求终止编辑操作从JTable获得 return true; } public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) { if(value != null)edit_txf.setText(value.toString());return this; } public boolean isCellEditable(EventObject anEvent) { return true; } public boolean shouldSelectCell(EventObject anEvent) { return true; } public Object getCellEditorValue() { return edit_txf.getText(); } public void actionPerformed(ActionEvent e){Point p = edit_btn.getLocation();new JTableTestDialog(100,180,this,jTableTest).setVisible(true);}
}

JTableTestCellEdit差不多已经完成了他的任务，接下来就是JTableTestDialog对象如何将值传给JTableTest的问题了。
我们在JTableTest添加一个如下所示的方法，以便于接收JTableTestDialog里的存有JTableTestDialog上数据的TableModel对象。

public void getTable(DefaultTableModel model){tableA.setModel(model);TableColumnModel tcm= tableA.getColumnModel();TableColumn tc = tcm.getColumn(0);tc.setCellRenderer(new JTableTestRenderer());tc.setCellEditor(new JTableTestCellEdit(this)); tableA.setColumnSelectionAllowed(false);tableA.setRowSelectionAllowed(false);tcm.getColumn(0).setPreferredWidth(200); tableA.repaint();}

接着在JTableTestDialog类里将数据写入TableModel对象里传给JTableTest对象：
这时JTableTest 类的完整代码如下：

package specialtable;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
public class JTableTest extends JFrame{String[] columnNames = {"名称及规格","零数","件数","数量","单位","件价","单价","金额","备注"};JTable tableA;public Object[][] values = { {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""}, {"","","","","","","","",""} };DefaultTableModel model = new DefaultTableModel(values,columnNames);public JTableTest(){setBounds(100,100,800,400);tableA = new JTable(model);tableA.setRowHeight(30);JScrollPane scrollPane = new JScrollPane(tableA);DefaultTableColumnModel dcm = (DefaultTableColumnModel)tableA.getColumnModel();dcm.getColumn(0).setPreferredWidth(200);//调用我们刚才自己改写后的TableCellRenderer接口JTableTestRendererTableColumnModel tcm= tableA.getColumnModel(); TableColumn tc = tcm.getColumn(0); tc.setCellRenderer(new JTableTestRenderer());//调用我们刚才自己改写后的TableCellEditor接口JTableTestCellEditortc.setCellEditor(new JTableTestCellEdit(this)); add(scrollPane);setVisible(true);}public static void main(String[] args){new JTableTest();}public void getTable(DefaultTableModel model){tableA.setModel(model);TableColumnModel tcm= tableA.getColumnModel();TableColumn tc = tcm.getColumn(0);tc.setCellRenderer(new JTableTestRenderer());tc.setCellEditor(new JTableTestCellEdit(this)); tableA.setColumnSelectionAllowed(false);tableA.setRowSelectionAllowed(false);tcm.getColumn(0).setPreferredWidth(200); tableA.repaint();}
}

JTableTestDialog类的完整代码如下：

package specialtable;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.Statement;
import java.util.Iterator;
import java.util.Vector;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.DefaultTableModel;public class JTableTestDialog extends JDialog implements ActionListener{String[] colunmNames = {"厂商","名称及规格","零数","件数"};public Object[][] values = { {"京东","电器","12","13"}, {"淘宝","电脑","15","16"}, {"当当","书籍","13","26"}, {"拍拍","qq","15","96"}, {"亚马逊","书","12","18"} };DefaultTableModel model = new DefaultTableModel(values,colunmNames);JTable tableB;JScrollPane scrollPane;JLabel tip_lbl =new JLabel("按ctrl或shift可多选货品");JButton ok = new JButton("确定");JPanel centerPanel = new JPanel();JPanel southPanel = new JPanel();JTableTestCellEdit jTableTestCellEdit;JTableTest jTableTest;public JTableTestDialog(int x,int y){setBounds(x,y,400,300);tableB = new JTable(model);scrollPane = new JScrollPane(tableB);scrollPane.setSize(400, 280);southPanel.add(tip_lbl,BorderLayout.WEST);southPanel.add(ok,BorderLayout.EAST);ok.addActionListener(this);add(scrollPane,BorderLayout.CENTER);add(southPanel,BorderLayout.SOUTH);}public JTableTestDialog(int x,int y,JTableTestCellEdit jTableTestCellEdit,JTableTest jTableTest){this(x,y);this.jTableTestCellEdit = jTableTestCellEdit;this.jTableTest = jTableTest;}public void actionPerformed(ActionEvent e){ if(jTableTestCellEdit != null && jTableTest != null){String[] columnNames = {"名称及规格","零数","件数","数量","单位","件价","单价","金额","备注"};DefaultTableModel model2 = new DefaultTableModel(columnNames,0);int[] rows = tableB.getSelectedRows();for(int i = 0; i < rows.length; i++){Vector v = new Vector();v.add(tableB.getValueAt(rows[i], 0));v.add(tableB.getValueAt(rows[i], 1));v.add(tableB.getValueAt(rows[i], 2));v.add(tableB.getValueAt(rows[i], 3));v.add("");v.add("");v.add("");v.add("");v.add("");model2.addRow(v);}for(int i = 0; i < 5;i++){Vector v = new Vector();v.add("");v.add("");v.add("");v.add("");v.add("");v.add("");v.add("");v.add("");v.add("");model2.addRow(v);}jTableTest.getTable(model2);dispose();   }}
}

最后的运行结果如下：
点击JButton弹出JDialog

选择两件商品后，点击确定，就将值写入了tableA中了。

现在基本完成了这个功能。在这个的基础上，要做出效果类似于智慧记那样的效果或是其他操作，那就是调整表表格本身的事情了。

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