如何在JTable上执行不区分大小写的过滤器? [英] How can I perform a case-insensitive filter on a JTable?
问题描述
我正在制作一个带有文本字段的表格,您可以在其中输入单词来过滤表格。它有效,但我想要做的是能够用输入的单词过滤它,但忽略单词的情况。有没有办法在不创建自定义 RowFilter
的情况下完成此操作?
I am making a table with a text field below it where you can type in a word to filter the table. It works, but what I want to do is be able to filter it with the word typed in, but ignoring the case of the word. Is there a way to accomplish this without creating a custom RowFilter
?
您可以运行此SCCEE来查看我的内容我在说什么。我希望能够输入 usa
并且它将过滤 USA
。
You can run this SCCEE to see what I'm talking about. I want to be able to type in usa
and it'll filter USA
.
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.RowFilter;
import javax.swing.table.TableModel;
import javax.swing.table.TableRowSorter;
public class TestTableSortFilter extends JApplet {
private String[] columnNames
= {"Country", "Capital", "Population in Millions", "Democracy"};
private Object[][] data = {
{"USA", "Washington DC", 280, true},
{"Canada", "Ottawa", 32, true},
{"United Kingdom", "London", 60, true},
{"Germany", "Berlin", 83, true},
{"France", "Paris", 60, true},
{"Norway", "Oslo", 4.5, true},
{"India", "New Delhi", 1046, true}
};
private JTable jTable = new JTable(data, columnNames);
private TableRowSorter<TableModel> rowSorter
= new TableRowSorter<>(jTable.getModel());
private JTextField jtfFilter = new JTextField();
private JButton jbtFilter = new JButton("Filter");
public TestTableSortFilter() {
jTable.setRowSorter(rowSorter);
JPanel panel = new JPanel(new BorderLayout());
panel.add(new JLabel("Specify a word to match:"),
BorderLayout.WEST);
panel.add(jtfFilter, BorderLayout.CENTER);
add(panel, BorderLayout.SOUTH);
add(new JScrollPane(jTable), BorderLayout.CENTER);
jtfFilter.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
String text = jtfFilter.getText();
if (text.trim().length() == 0) {
rowSorter.setRowFilter(null);
} else {
rowSorter.setRowFilter(RowFilter.regexFilter(text));
}
}
});
}
}
我可以传递给 regexFilter(text)
,这会给我想要的结果吗?
Is there maybe something I can pass to the regexFilter(text)
, that will give me the desired result?
rowSorter.setRowFilter(RowFilter.regexFilter(text));
推荐答案
添加标准regex不区分大小写标志:
rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
我已经用你的SSCCE测试了这个(感谢提供的)并且它可以工作。
I've tested this with your SSCCE (thanks for providing that) and it works.
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