在JEditorPane中突出显示一个单词

Question

我必须强调所有出现的单词JEditorPane.为此,我使用以下代码:

 try
{          
javax.swing.text.DefaultHighlighter.DefaultHighlightPainter highlightPainter = 
    new javax.swing.text.DefaultHighlighter.DefaultHighlightPainter(Color.YELLOW);
textPane.getHighlighter().addHighlight(startPos, endPos, 
highlightPainter);
}
catch(Exception ex)
{
}

但是我怎样才能给出一个单词索引的位置？

我正在从文件中读取内容,但它也正在读取HTML标记,这会扰乱单词索引.

Answer 1

基本上,你应该能够在文档中查找所需的匹配项...

public class TestEditorPane01 {

    public static void main(String[] args) {
        new TestEditorPane01();
    }

    public TestEditorPane01() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                }

                JEditorPane editor = new JEditorPane();
                try {
                    editor.setPage(new File("Test.html").toURI().toURL());
                } catch (Exception exp) {
                    exp.printStackTrace();
                }

                JFrame frame = new JFrame();
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLayout(new BorderLayout());
                frame.add(new JScrollPane(editor));
                frame.setSize(400, 400);
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);

                Document document = editor.getDocument();
                try {
                    String find = "Method";
                    for (int index = 0; index + find.length() < document.getLength(); index++) {
                        String match = document.getText(index, find.length());
                        if (find.equals(match)) {
                            javax.swing.text.DefaultHighlighter.DefaultHighlightPainter highlightPainter =
                                    new javax.swing.text.DefaultHighlighter.DefaultHighlightPainter(Color.YELLOW);
                            editor.getHighlighter().addHighlight(index, index + find.length(),
                                    highlightPainter);
                        }
                    }
                } catch (BadLocationException ex) {
                    ex.printStackTrace();
                }

            }
        });
    }
}

这将遍历整个文档并突出显示所有匹配项.这也是一个案例敏感的比赛;)