java生成二维码合并海报并加上文字

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已于 2024-05-10 10:03:57 修改 · 833 阅读

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#java #开发语言

于 2024-05-10 10:02:20 首次发布

1.生成二维码

	public static byte[] generateQRCodeImages(String text, int width, int height) throws WriterException, IOException {
   
   
		String binary = null;
		QRCodeWriter qrCodeWriter = new QRCodeWriter();
		//调整白边大小
		Hashtable<EncodeHintType, Object> hints = new Hashtable<>();
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        hints.put(EncodeHintType.MARGIN, 1);
        BitMatrix bitMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, width, height,hints);
		//BitMatrix bitMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, width, height);
		//bitMatrix = deleteWhite(bitMatrix);
		ByteArrayOutputStream out = new ByteArrayOutputStream();
		MatrixToImageWriter.writeToStream(bitMatrix,"PNG",out);
		byte[] byteArray = out.toByteArray