Question

用一个jtable显示数据库中的数据，同时又在每行后加一列，放一个按钮

当点击这个按钮的时候能够对数据库进行相关的操作。怎么处理呢？

Answer 1

希望对你有用
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.File;

import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableCellRenderer;

public class JTableButton extends JPanel {
private JTable table;
private JScrollPane scrollPane;
private JButton[] buttons;
private String path = System.getProperty("user.dir") + File.separator
+ "images1" + File.separator;

public JTableButton() {
setBorder(BorderFactory.createLineBorder(Color.red, 1));
init();
}

private void init() {
String headName[] = { "Name", "age", "sex", "adress", "image" };

buttons = new JButton[5];
for(int i=0;i<buttons.length;i++){
buttons[i] = new JButton(""+i);
}
Object obj[][] = {
{ "LiMing", 23, Boolean.TRUE, buttons[0],
new ImageIcon(path + "icon.png") },
{ "ZhangSan", 25, Boolean.TRUE,buttons[1],
new ImageIcon(path + "icon.png") },
{ "WangWu", 21, Boolean.FALSE, buttons[2],
new ImageIcon(path + "icon.png") },
{ "LiSi", 28, Boolean.TRUE, buttons[3],
new ImageIcon(path + "icon.png") },
{ "LuBo", 20, Boolean.FALSE, buttons[4],
new ImageIcon(path + "icon.png") }, };

table = new JTable(new MyTableModel(headName,obj));
table.setDefaultRenderer(JButton.class, new ComboBoxCellRenderer());
scrollPane = new JScrollPane(table);
setLayout(new BorderLayout());
add(scrollPane, BorderLayout.CENTER);
addHandler();
}
private void addHandler(){
//添加事件
table.addMouseListener(new MouseAdapter(){
public void mouseClicked(MouseEvent e) {
System.out.println("table");
int row = table.getSelectedRow();
int column = table.getSelectedColumn();
System.out.println("row="+row+":"+"column="+column);
if(column==3){
//处理button写在这里
System.out.println(((JButton)table.getValueAt(row, column)).getText());
}
}
});
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.add(new JTableButton());
frame.setSize(new Dimension(800, 400));
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
class MyTableModel extends AbstractTableModel {
private String headName[];
private Object obj[][];

public MyTableModel() {
super();
}

public MyTableModel(String[] headName, Object[][] obj) {
this();
this.headName = headName;
this.obj = obj;
}

public int getColumnCount() {
return headName.length;
}

public int getRowCount() {
return obj.length;
}

public Object getValueAt(int r, int c) {
return obj[r][c];
}

public String getColumnName(int c) {
return headName[c];
}

public Class<?> getColumnClass(int columnIndex) {
return obj[0][columnIndex].getClass();
}

@Override
public boolean isCellEditable(int rowIndex, int columnIndex) {
if (columnIndex == 3 || columnIndex == 4) {
return false;
}
return true;
}

}
}

class ComboBoxCellRenderer implements TableCellRenderer {
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
JButton cmb = (JButton) value;
if (isSelected) {
cmb.setForeground(table.getSelectionForeground());
cmb.setBackground(table.getSelectionBackground());
} else {
cmb
.setForeground((unselectedForeground != null) ? unselectedForeground
: table.getForeground());
cmb
.setBackground((unselectedBackground != null) ? unselectedBackground
: table.getBackground());
}
cmb.setFont(table.getFont());
if (hasFocus) {
cmb
.setBorder(UIManager
.getBorder("Table.focusCellHighlightBorder"));
if (!isSelected && table.isCellEditable(row, column)) {
Color col;
col = UIManager.getColor("Table.focusCellForeground");
if (col != null) {
cmb.setForeground(col);
}
col = UIManager.getColor("Table.focusCellBackground");
if (col != null) {
cmb.setBackground(col);
}
}
} else {
cmb.setBorder(noFocusBorder);
}
return cmb;
}

protected static Border noFocusBorder = new EmptyBorder(1, 1, 1, 1);

private Color unselectedForeground;
private Color unselectedBackground;
}