import java.awt.Button;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import javax.swing.JFrame;
import org.apache.batik.swing.JSVGCanvas;
import org.apache.batik.swing.gvt.GVTTreeRendererAdapter;
import org.apache.batik.swing.gvt.GVTTreeRendererEvent;
import org.apache.batik.swing.svg.GVTTreeBuilderAdapter;
import org.apache.batik.swing.svg.GVTTreeBuilderEvent;
import org.apache.batik.swing.svg.SVGDocumentLoaderAdapter;
import org.apache.batik.swing.svg.SVGDocumentLoaderEvent;
import org.w3c.dom.Element;
import org.w3c.dom.svg.SVGDocument;

public class application{
   JFrame frame = new JFrame();                 
    JSVGCanvas canvas=new JSVGCanvas();
    File f=new File("dom.svg");   
    
    public static void main(String[] args) {
        new application().init();
    }  
    
    public void init() {
                  canvas.addSVGDocumentLoaderListener(new SVGDocumentLoaderAdapter() {
                        public void documentLoadingStarted(SVGDocumentLoaderEvent e) {
                         System.out.println("Document Loading...");
                        }
                        public void documentLoadingCompleted(SVGDocumentLoaderEvent e) {
                         System.out.println("Document Loaded.");
                        }
                    });

                 canvas.addGVTTreeBuilderListener(new GVTTreeBuilderAdapter() {
                        public void gvtBuildStarted(GVTTreeBuilderEvent e) {
                         System.out.println("Build Started...");
                        }
                        public void gvtBuildCompleted(GVTTreeBuilderEvent e) {
                         System.out.println("Build Done.");
                            frame.pack();
                        }
                    });

                 canvas.addGVTTreeRendererListener(new GVTTreeRendererAdapter() {
                        public void gvtRenderingPrepare(GVTTreeRendererEvent e) {
                         System.out.println("Rendering Started...");
                        }
                        public void gvtRenderingCompleted(GVTTreeRendererEvent e) {
                         System.out.println("Rendering Done");
                        }
                    });
                 
                 Button bt=new Button("ok");                  
                 canvas.setURI(f.toURI().toString());
                 
                 bt.addActionListener(new ActionListener()
                 {
              public void actionPerformed(ActionEvent e)
              {
                final SVGDocument svgDoc= canvas.getSVGDocument();
                      Element elt = svgDoc.getElementById("elt-id");//这是dom.svg里的一个元素，已经定义；
                      System.out.println(elt);//这里已经可以找到对象
     //   elt.setAttribute("fill", "black"); 请问怎么在这里实现鼠标点击事件，通过点击对象改变对象的填充色？
              }
                   });
        frame.add(bt,"East"); 
        frame.add(canvas);
        frame.setSize(400, 300);
        frame.setVisible(true);
 }  
}

这句很重要，没有就实现不了。