我的代码正确地将数据库中的数据显示到表中但是当我想删除一行时，行是从数据库和表模型中删除的，
但是"AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 1会出现异常：
public class Model1 extends DefaultTableModel {
public Model1(Vector<Vector<String>> data, Vector<String> column) {
super(data, column);
}
public void removeRow(int rowToModel, Object rowId) {
JDBC1 jdbc1 = new JDBC1();
try {
Connection con;
PreparedStatement ps = null;
con = DriverManager.getConnection(...);
ps = con.prepareStatement("delete from table where id=?");
ps.setObject(1, rowId);
if (ps.executeUpdate() == 1) {
jdbc1.getColumns().remove(rowToModel);
fireTableRowsDeleted(rowToModel, rowToModel);
}
} catch (SQLException sqle) {
sqle.printStackTrace();
}
}
}
我的 JDBC 类：
public class JDBC1 {
private Vector<String> columns = new Vector<String>();
Vector<Vector<String>> data = new Vector<Vector<String>>();
Connection con;
Statement statement;
ResultSet result;
String query = "Select * from table";
public Vector<String> getColumn() throws SQLException {
con = DriverManager.getConnection(...);
statement = con.createStatement();
result = statement.executeQuery(query);
int c = result.getMetaData().getColumnCount();
for (int i = 1; i <= c; i++) {
getColumns().add(result.getMetaData().getColumnName(i));
}
return getColumns();
}
public Vector<Vector<String>> getData() throws SQLException{
con = DriverManager.getConnection(...);
statement = con.createStatement();
result = statement.executeQuery(query);
int c = result.getMetaData().getColumnCount();
while (result.next()) {
Vector<String> newRow = new Vector<String>(c);
for (int i = 1; i <= c; i++) {
newRow.add(result.getString(i));
}
data.add(newRow);
}
return data;
}
public Vector<String> getColumns() {
return columns;
}
public void setColumns(Vector<String> columns) {
this.columns = columns;
}
}
图形界面类：
public class GUI1 extends JFrame implements ActionListener {
JTable table;
Model1 model1;
JDBC1 jdbc1;
JButton dellButton;
public GUI1() {
try {
jdbc1 = new JDBC1();
model1 = new Model1(jdbc1.getData(), jdbc1.getColumn());
table = new JTable(model1);
} catch (SQLException sqle) {
sqle.printStackTrace();
}
add(new JScrollPane(table), BorderLayout.CENTER);
add(dellButton() , BorderLayout.SOUTH);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(600, 550);
setLocation(250, 85);
setVisible(true);
}
public static void main(String[] args) {
new GUI1();
}
public JPanel dellButton(){
JPanel panel = new JPanel();
dellButton = new JButton("Delete Row");
dellButton.addActionListener(this);
panel.add(dellButton);
return panel;
}
@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == dellButton) {
dellAction();
}
}
public void dellAction() {
if (table.getSelectedRow() > -1) {
int rowToDelete = table.getSelectedRow();
int rowToModel = table.convertRowIndexToModel(rowToDelete);
Object rowId = table.getValueAt(table.getSelectedRow(), 0);
model1.removeRow(rowToModel, rowId);
} else JOptionPane.showMessageDialog(null, "Select Row");
}
}
输出：
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 1
at java.util.Vector.remove(Vector.java:827)
at test.Model1.removeRow(Model1.java:29)
at test.GUI1.dellAction(GUI1.java:76)
at test.GUI1.actionPerformed(GUI1.java:67)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:682)
at java.awt.EventQueue$3.run(EventQueue.java:680)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:696)
at java.awt.EventQueue$4.run(EventQueue.java:694)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:693)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)