如何在 JTable 正确使用正则表达式过滤器

Question

我有一个JTable，想要过滤它。因此，我有一个文本字段，我从中获取输入：

    eingabeF.addKeyListener(new KeyListener() 
    {
        @Override
        public void keyReleased(KeyEvent e) {
            String eingabe = eingabeF.getText();
            System.out.println(eingabe);
            MovieUI.getTable().getSorter().setRowFilter(RowFilter.regexFilter(".*"+ eingabe +".*"));
        }
        @Override
        public void keyPressed(KeyEvent e) {
            // TODO Auto-generated method stub
        }
        @Override
        public void keyTyped(KeyEvent e) {
            // TODO Auto-generated method stub
        }
    });

但它不起作用。如何以正确的方式使用正则表达式过滤器？

谢谢！

Answer 1

• 使用 DocumentListener（适用于所有 JTextComponen TS）而不是KeyListener

• 阅读 Oracle 教程如何使用表 - 排序和筛选有关JTextField、DocumentListener和带RowFilter.regexFilter()的工作代码示例

Answer 2

试试这个，这在我的项目中工作正常您可以将此搜索方法用于类中的每个 JTable，

  private void txtSearchKeyReleased(java.awt.event.KeyEvent evt) {                                         
        search(myTable,myTextField);
    }
  public void search(JTable table, JTextField txtSearch) {
        // I have used txtSearch1 in the RowColorRenderer class
        this.txtSearch1 = txtSearch;
         //Create new table sorter for the table
        TableRowSorter sorter = new TableRowSorter(table.getModel());
        //Add row filter to the tablerowsorter (regex)
        sorter.setRowFilter(RowFilter.regexFilter("(?i).*\Q" + txtSearch.getText() + "\E.*"));
        //Apply the results to the output table
        table.setRowSorter(sorter);
        if (table.getRowCount() == 0) {
            //Display message like nothing found
        }
        for (int i = 0; i < table.getColumnCount(); i++) {
            RowColorRenderer rowRenderer = new RowColorRenderer(i);
            TableColumn column = table.getColumnModel().getColumn(i);
            column.setCellRenderer((TableCellRenderer) rowRenderer);
        }
    }

这是单元格渲染器，用于更改在其中找到搜索 JTextField 的文本的单元格的颜色

   public class RowColorRenderer extends DefaultTableCellRenderer {
        private static final long serialVersionUID = 1L;
        private int colNo = 0;
        RowColorRenderer(int col) {
            colNo = col;
        }
        @Override
        public Component getTableCellRendererComponent(JTable table, Object value,
                boolean isSelected, boolean hasFocus, int row, int column) {
            Component comp = super.getTableCellRendererComponent(table, value,
                    isSelected, hasFocus, row, column);
            JComponent jc = (JComponent) comp;
            if (!isSelected) {
                if (table.getValueAt(row, colNo) != null) {
                    String str = table.getValueAt(row, colNo).toString();
                    if (!str.isEmpty()) {
                        if (Pattern.compile("(?i).*\Q" + txtSearch1.getText() + "\E.*").matcher(str).find()) {
                            if (!txtSearch1.getText().equals("")) {
                                //   setBackground(Color.LIGHT_GRAY);
                                //  setFont(new Font("Serif", Font.BOLD, 18));
                                //  setHorizontalAlignment(CENTER);
                                setForeground(Color.blue);
                            } else {
                                setBackground(table.getBackground());
                                setForeground(table.getForeground());
                                // setHorizontalAlignment(CENTER);
                            }
                        } else {
                            setBackground(table.getBackground());
                            setForeground(table.getForeground());
                        }
                    }
                }
            }
            return this;
        }
    }