将 Graphics2D 转换为 Image 或 BufferedImage [英] Convert a Graphics2D to an Image or BufferedImage

问题描述

我这里有一个小问题.

我有一个小程序，用户可以在其中绘图".为此，我使用 java.awt.Graphics2D.但是，我该怎么做才能将用户绘制的图像保存为 JPEG 图像，或者至少将其转换为 BufferedImage 之类的?我不知道该怎么做.

I have an applet, where user can "draw" inside it. To do that, I use the java.awt.Graphics2D. But, how can I do to save the user draw image as a JPEG image, or at least, convert it to a BufferedImage or something? I don't know how to do that.

谢谢.

推荐答案

我就是这样做的，而且效果很好:

I do it that way, and works very well:

BufferedImage awtImage = new BufferedImage(drawPanel.getWidth(), drawPanel.getHeight(), BufferedImage.TYPE_INT_RGB);
Graphics g = awtImage.getGraphics();
drawPanel.printAll(g);

try
{
String caminhoImagem = System.getProperty("user.home") + "\\temps\\assinatura.jpg";
FileOutputStream fos = new FileOutputStream(caminhoImagem);
JPEGImageEncoderImpl j = new JPEGImageEncoderImpl(fos);
j.encode(awtImage);
fos.close();
} catch(e) {..... }

<小时>

仅此而已:)谢谢大家:)

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That's all :) Thanks everyone :)

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