import net.sf.epsgraphics.ColorMode; //导入依赖的package包/类
@Override
public void renderGraph(JGraph<?> graph, File file) throws PortException {
    // Get graph bounds. If not available, do nothing (probably empty graph)
    Rectangle2D bounds = graph.getGraphBounds();
    if (bounds == null) {
        return;
    }

    try (FileOutputStream fos = new FileOutputStream(file);) {
        EpsGraphics g2d = new EpsGraphics(graph.getModel()
            .getName(), fos, 0, 0, (int) bounds.getWidth(), (int) bounds.getHeight(),
            ColorMode.COLOR_RGB);
        // Render
        toGraphics(graph, g2d);

        // Cleanup
        g2d.close();
    } catch (IOException e) {
        throw new PortException(e);
    }
}
 

import net.sf.epsgraphics.ColorMode; //导入依赖的package包/类
public static void exportToEPS(File file, int width, int height, JFreeChart chart) throws GraphException, IOException
{
	FileOutputStream fileOutputStream = new FileOutputStream(file);

	EpsGraphics g2d = new EpsGraphics(chart.getTitle().getText(), fileOutputStream, 0, 0, width, height, ColorMode.COLOR_RGB);

	// Don't export fonts as vectors, no hope of getting same font as publication.
	// g2d.setAccurateTextMode(false); // Does not rotate y-axis label.

	chart.draw(g2d, new Rectangle(width, height));

	g2d.close();
	g2d.dispose();
}
 

import net.sf.epsgraphics.ColorMode; //导入依赖的package包/类
/**
 * Exports the current graph to EPS.
 *
 * @param file the eps file to export to.
 * @throws IOException if IO goes wrong.
 */
public void exportToEPS(File file) throws IOException {

    EpsGraphics dummy = new EpsGraphics("Title", new ByteArrayOutputStream(),
            0, 0, 1, 1, ColorMode.BLACK_AND_WHITE);

    NLPInstance filtered = filterInstance();

    Dimension dim = renderer.render(filtered, dummy);

    EpsGraphics g = new EpsGraphics("Title", new FileOutputStream(file), 0, 0,
            (int) dim.getWidth() + 2, (int) dim.getHeight(), ColorMode.COLOR_RGB);

    renderer.render(filtered, g);

    g.flush();
    g.close();
}
 

import net.sf.epsgraphics.ColorMode; //导入依赖的package包/类
/**
 * Export jfreechart to image format. File must have an extension like jpg,
 * png, pdf, svg or eps. Otherwise export will fail.
 *
 * @param file
 *            Destination The file
 * @param chart
 *            JFreechart the chart object
 * 
 * @param width
 *            The width of the image
 * @param height
 *            The height of the image
 * 
 * @throws Exception
 *             An exception
 */
public static void export(File file, JFreeChart chart, int width, int height) throws Exception {

	FileOutputStream out = new FileOutputStream(file);
	Graphics2D g = new EpsGraphics(file.getName(), out, 0, 0, width, height, ColorMode.COLOR_RGB);

	chart.draw(g, new Rectangle2D.Double(0, 0, width, height));
	out.write(g.toString().getBytes());
	out.close();

}