在Java中可以将BufferedImage转换为IMG数据URI吗？

Question

我用以下示例代码创建了一个图形图像.

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.

此时我有BufferedImage,我想将其转换为IMG数据URI.这可能吗？例如..

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

Answer 1

没有测试,但这样的事情应该这样做:

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;

Java有许多不同的base64编解码器实现.我用MigBase64得到了很好的结果.