一步一步教你用java生成二维码

return true; }

public

LuminanceSource crop(int left, int top, int width, int height) {

return new

BufferedImageLuminanceSource(image, this.left + left,

this.top + top, width, height); }

public

boolean isRotateSupported() { return true; }

public

LuminanceSource rotateCounterClockwise() { int

sourceWidth = image.getWidth(); int

sourceHeight = image.getHeight();

AffineTransform transform = new AffineTransform(0.0, -1.0, 1.0,

0.0, 0.0, sourceWidth);

BufferedImage rotatedImage = new BufferedImage(sourceHeight,

sourceWidth,

BufferedImage.TYPE_BYTE_GRAY);

Graphics2D g

= rotatedImage.createGraphics();

g.drawImage(image, transform, null); g.dispose();

int width = getWidth();

return new

BufferedImageLuminanceSource(rotatedImage, top,