[Java] 从图片URL中读取字节数组

ByteArrayOutputStream baos = null;
try
{
URL u = new URL(strUrl);
BufferedImage image = ImageIO.read(u);

//convert BufferedImage to byte array
baos = new ByteArrayOutputStream();
ImageIO.write( image, "jpg", baos);
baos.flush();

return baos.toByteArray();
}
catch (Exception e)
{
}
finally
{
if(baos != null)
{
try {
baos.close();
} catch (IOException e) {
}
}
}