在Java中，是否可以将BufferedImage转换为IMG数据URI？ [英] In Java is it possible to convert a BufferedImage to an IMG Data URI?

问题描述

我用下面的示例代码创建了一个图形图像。

I have created a graphical image with the following sample code.

BufferedImage bi = new BufferedImage(50,50,BufferedImage.TYPE_BYTE_BINARY);
Graphics2D g2d = bi.createGraphics();

// Draw graphics. 

g2d.dispose();
// BufferedImage now has my image I want.

此时我已将BufferedImage转换为IMG数据URI。这可能吗？例如..

At this point I have BufferedImage which I want to convert into an IMG Data URI. Is this possible? For example..

<IMG SRC="data:image/png;base64,[BufferedImage data here]"/>

推荐答案

没有测试，但是应该这样做：

Not tested, but something like this ought to do it:

ByteArrayOutputStream out = new ByteArrayOutputStream();
ImageIO.write(bi, "PNG", out);
byte[] bytes = out.toByteArray();

String base64bytes = Base64.encode(bytes);
String src = "data:image/png;base64," + base64bytes;

有大量不同的Java base64编解码器实现。我使用 MigBase64 获得了很好的结果。

There are lots of different base64 codec implementations for Java. I've had good results with MigBase64.

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