【发布时间】：2016-10-31 11:33:21
【问题描述】：
我正在使用 MySQL 的 sakila 数据库来测试我的代码。我有一个用于显示视图结果的 JTable。有些工作正常，有些则抛出此错误：
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 16 >= 16
at java.util.Vector.elementAt(Vector.java:474)
at javax.swing.table.DefaultTableModel.getValueAt(DefaultTableModel.java:648)
at javax.swing.JTable.getValueAt(JTable.java:2717)
at javax.swing.JTable.prepareRenderer(JTable.java:5706)
at javax.swing.plaf.synth.SynthTableUI.paintCell(SynthTableUI.java:683)
at javax.swing.plaf.synth.SynthTableUI.paintCells(SynthTableUI.java:580)
at javax.swing.plaf.synth.SynthTableUI.paint(SynthTableUI.java:364)
at javax.swing.plaf.synth.SynthTableUI.update(SynthTableUI.java:275)
at javax.swing.JComponent.paintComponent(JComponent.java:780)
at javax.swing.JComponent.paint(JComponent.java:1056)
at javax.swing.JComponent.paintChildren(JComponent.java:889)
at javax.swing.JComponent.paint(JComponent.java:1065)
at javax.swing.JViewport.paint(JViewport.java:728)
at javax.swing.JComponent.paintChildren(JComponent.java:889)
at javax.swing.JComponent.paint(JComponent.java:1065)
at javax.swing.JComponent.paintChildren(JComponent.java:889)
at javax.swing.JComponent.paint(JComponent.java:1065)
at javax.swing.JComponent.paintChildren(JComponent.java:889)
at javax.swing.JComponent.paint(JComponent.java:1065)
at javax.swing.JComponent.paintChildren(JComponent.java:889)
at javax.swing.JComponent.paint(JComponent.java:1065)
at javax.swing.JComponent.paintChildren(JComponent.java:889)
at javax.swing.JSplitPane.paintChildren(JSplitPane.java:1047)
at javax.swing.JComponent.paint(JComponent.java:1065)
at javax.swing.JComponent.paintChildren(JComponent.java:889)
at javax.swing.JComponent.paint(JComponent.java:1065)
at javax.swing.JComponent.paintChildren(JComponent.java:889)
at javax.swing.JComponent.paint(JComponent.java:1065)
at javax.swing.JLayeredPane.paint(JLayeredPane.java:586)
at javax.swing.JComponent.paintChildren(JComponent.java:889)
at javax.swing.JComponent.paint(JComponent.java:1065)
at javax.swing.JComponent.paintChildren(JComponent.java:889)
at javax.swing.JComponent.paint(JComponent.java:1065)
at javax.swing.JComponent.paintChildren(JComponent.java:889)
at javax.swing.JComponent.paint(JComponent.java:1065)
at javax.swing.JLayeredPane.paint(JLayeredPane.java:586)
at javax.swing.JComponent.paintChildren(JComponent.java:889)
at javax.swing.JComponent.paint(JComponent.java:1065)
at javax.swing.JLayeredPane.paint(JLayeredPane.java:586)
at javax.swing.JComponent.paintChildren(JComponent.java:889)
at javax.swing.JComponent.paint(JComponent.java:1065)
at javax.swing.JComponent.paintToOffscreen(JComponent.java:5210)
at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1579)
at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1502)
at javax.swing.RepaintManager.paint(RepaintManager.java:1272)
at javax.swing.JComponent._paintImmediately(JComponent.java:5158)
at javax.swing.JComponent.paintImmediately(JComponent.java:4969)
at javax.swing.RepaintManager$4.run(RepaintManager.java:831)
at javax.swing.RepaintManager$4.run(RepaintManager.java:814)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:814)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:789)
at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:738)
at javax.swing.RepaintManager.access$1200(RepaintManager.java:64)
at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1732)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
我用来构建模型的代码是：
private void insertViewData(DataSet dataSet) {
//testUpdateJTable2();
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
Object[] headers = null;
Object[][] data = null;
try {
List<String> tmp = dataSet.getColumnNames();
headers = (String[]) tmp.toArray(new String[tmp.size()]);
data = dataSet.toArray();
DefaultTableModel model = new DefaultTableModel(data, headers) {
@Override
public boolean isCellEditable(int row, int column) {
return false; //To change body of generated methods, choose Tools | Templates.
}
};
tblData.setModel(model);
} catch (Exception e) {
String messageString = e.getMessage();
}
tblData.invalidate();
tblData.revalidate();
tblData.repaint();
}
});
}
从有错误的查询之一返回的数据示例是：
"Woodridge,Australia", "Jon Stephens", 33726.77
"Lethbridge,Canada", "Mike Hillyer", 33679.7
【问题讨论】：
-
没有发现异常。
-
调试器显示什么？
-
只是上面的例外
-
最后三行是多余的；更新模型应该导致监听表更新自己；确认
dataSet没有在背后改变。 -
感谢@trashgod，我删除了这些行。我做了一个简单的表模型，发现由于某种原因 SynthTableUI 类得到了错误的行数。我必须弄清楚为什么。似乎 getRowCount 的大小没有命中。
标签： java swing jtable indexoutofboundsexception