加载图片获取图片参数和画图

public class Images
{
	public static void main(String[] args)
	{
		try
		{
			URL url = new URL("http://www.liuqia.com/images/home/logo.png");
			HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
			System.out.println(urlConnection.HTTP_OK);
			BufferedImage bi = null;
			bi = javax.imageio.ImageIO.read(url);
			int[] a = new int[2];
			a[0] = bi.getWidth();
			a[1] = bi.getHeight(); // 获得 高度
			System.out.println("图片宽：" + a[0]);
			System.out.println("图片高：" + a[1]);

			int width = 200;
			int height = 200;
			BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
			Graphics g = image.getGraphics();
			// 设定背景色
			g.setColor(Color.WHITE);
			g.fillRect(0, 0, width, height);

			// 设定字体
			Font mFont = new Font("Times New Roman 宋体", Font.PLAIN, 12);// 设置字体
			g.setFont(mFont);

			// 画边框
			g.setColor(Color.BLACK);
			g.drawRect(0, 0, width - 1, height - 1);

			// 随机产生干扰线，使图象中的认证码不易被其它程序探测到
			g.setColor(Color.blue);
			Random random = new Random();
			for (int i = 0; i < 155; i++)
			{
				int x2 = random.nextInt(width);
				int y2 = random.nextInt(height);
				int x3 = random.nextInt(12);
				int y3 = random.nextInt(12);
				g.drawLine(x2, y2, x2 + x3, y2 + y3);
			}

			// 将认证码显示到图象中
			g.setColor(new Color(20 + random.nextInt(110), 20 + random.nextInt(110), 20 + random.nextInt(110)));
			String s = "@食尚族";
			g.drawString(s, 65, 170);
			
			s = "http://www.secn.com.cn";
			g.drawString(s, 65, 190);

			System.out.println(g.getFont());

			// 图象生效
			g.dispose();
			// 输出图象到页面
			OutputStream out = new FileOutputStream(new File("E://aa.jpg"));
			ImageIO.write((BufferedImage) image, "JPEG", out);
			out.close();

		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}
}