java - 为什么我需要在 fireTableRowsInserted() 之前调用 getRowSorter().modelStructureChanged()

Question

我有一个扩展 AbstractTableModel 的表。当数据到达时，我删除行并用新数据重新创建它们。我不明白的是为什么我必须调用以下内容:

getRowSorter().modelStructureChanged();

打电话之前

fireTableRowsInserted();

如果我不这样做，fireTableRowsInserted() 会抛出以下异常:

Exception in thread "AWT-EventQueue-1" java.lang.ArrayIndexOutOfBoundsException: 1
    at javax.swing.DefaultRowSorter.setModelToViewFromViewToModel(DefaultRowSorter.java:717)
    at javax.swing.DefaultRowSorter.rowsInserted0(DefaultRowSorter.java:1046)
    at javax.swing.DefaultRowSorter.rowsInserted(DefaultRowSorter.java:851)
    at javax.swing.JTable.notifySorter(JTable.java:4258)
    at javax.swing.JTable.sortedTableChanged(JTable.java:4106)
    at javax.swing.JTable.tableChanged(JTable.java:4383)
    at javax.swing.table.AbstractTableModel.fireTableChanged(AbstractTableModel.java:280)
    at javax.swing.table.AbstractTableModel.fireTableRowsInserted(AbstractTableModel.java:215)
    at ems.ui.components.BoundTable$BoundTableModel.addRow(BoundTable.java:189)
    at ems.ui.components.BoundTable.loadData(BoundTable.java:315)
    at ems.ui.components.BoundTable.modelChanged(BoundTable.java:333)
    at ems.model.BaseDataModel.notifyPropertyChange(BaseDataModel.java:541)
    at ems.model.BaseDataModel.listLoadedFully(BaseDataModel.java:456)
    at 
    at ems.network.HTTPProtobufPoller$2.run(HTTPProtobufPoller.java:107)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:641)
    at java.awt.EventQueue.access$000(EventQueue.java:84)
    at java.awt.EventQueue$1.run(EventQueue.java:602)
    at java.awt.EventQueue$1.run(EventQueue.java:600)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:611)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

Answer 1

如果您重新创建整个表(删除行然后重新插入它们)，您至少需要调用“fireTableDataChanged”(如果您很懒并且不想告诉模型到底发生了什么变化而只是希望它重新计算所有内容:- )。

“fireTableRowsInserted”只能在将数据追加到表模型时使用(即，不要从表模型中删除数据)。