一步一步教你用java生成二维码

public

static void encode(String content, String destPath) throws Exception {

QRCodeUtil.encode(content, null, destPath, false); }

public

static void encode(String content, String imgPath,

OutputStream

output, boolean needCompress) throws Exception {

BufferedImage image = QRCodeUtil.createImage(content, imgPath,

needCompress);

ImageIO.write(image, FORMAT_NAME, output); }

public

static void encode(String content, OutputStream output) throws Exception {

QRCodeUtil.encode(content, null, output, false); }

public

static String decode(File file) throws Exception {

BufferedImage image;

image = ImageIO.read(file);

if (image == null) {

return null; }

BufferedImageLuminanceSource source = new BufferedImageLuminanceSource( image);

BinaryBitmap

bitmap = new BinaryBitmap(new HybridBinarizer(source));