import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.JTextPane;
import javax.swing.border.AbstractBorder;

public class JQQTextPane extends JTextPane {

    public JQQTextPane() {
        super();
        initialize();
    }

    private void initialize() {
        ImageButton button = new ImageButton();
        button.setIcon(new ImageIcon("src/snow.png"));
        setText("12345");
        insertComponent(button);
    }

    class ImageButton extends JButton {
        
        private JPopupMenu popupMenu;

        public ImageButton() {
            initialize();
        }

        private void initialize() {
            setBorder(new ImageBorder());
            setContentAreaFilled(false);
            popupMenu = new JPopupMenu();
            popupMenu.add(new JMenuItem("另存为"));
            popupMenu.add(new JMenuItem("等等"));
            addMouseListener(new MouseAdapter() {
                @Override
                public void mouseReleased(MouseEvent e) {
                    if (e.isPopupTrigger()) {
                        popupMenu.show(ImageButton.this, e.getX(), e.getY());
                    }
                }
            });
        }

    }

    class ImageBorder extends AbstractBorder {

        @Override
        public void paintBorder(Component c, Graphics g, int x, int y,
                int width, int height) {
            Color oldColor = g.getColor();
            g.setColor(Color.black);
            if (c.hasFocus()) {
                g.drawRect(x, y, width - 1, height - 1);
            }
            g.setColor(oldColor);
        }

        @Override
        public Insets getBorderInsets(Component c) {
            return new Insets(1, 1, 1, 1);
        }

        @Override
        public Insets getBorderInsets(Component c, Insets insets) {
            insets.top = 1;
            insets.left = 1;
            insets.bottom = 1;
            insets.right = 1;
            return insets;
        }
    }

    public static void main(String... args) {
        JFrame frame = new JFrame();
        frame.setSize(400, 300);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setContentPane(new JQQTextPane());
        frame.setVisible(true);
    }

}

------解决方案--------------------
帮顶。