Servlet产生图像

public class TestImage extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {response.setContentType("image/jpeg");ServletOutputStream out = response.getOutputStream();BufferedImage image = new BufferedImage(100,100,BufferedImage.TYPE_INT_RGB);Graphics g = image.getGraphics();g.setColor(Color.PINK);g.fillRect(0, 0, 100, 100);JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);encoder.encode(image);out.close();}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {this.doGet(request, response);}}