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]"/>

解决方法

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;

有lots of different base64 codec implementations for Java.我在MigBase64取得了不错的成绩.