1.合成海报保存到本地

public static void drawImage(double x,double y,String backgroundUrl,String qrCodeUrl,String text,Integer color) throws IOException {

BufferedImage bgBufImage = ImageIO.read(new URL(backgroundUrl)); //获取图片

Graphics2D bgBufImageGraphics = bgBufImage.createGraphics(); //创建一个图形

BufferedImage qrCodeImage = ImageIO.read(new URL(qrCodeUrl)); //获取图片

Integer width = Integer.valueOf(new BigDecimal(x * bgBufImage.getWidth() / 100).setScale(0, BigDecimal.ROUND_HALF_UP).toString());

Integer height = Integer.valueOf(new BigDecimal(y * bgBufImage.getHeight() / 100).setScale(0, BigDecimal.ROUND_HALF_UP).toString());

bgBufImageGraphics.drawImage(qrCodeImage, width, height, qrCodeImage.getWidth(), qrCodeImage.getHeight(), null); //设置图片的位置

if (!StringUtils.isEmpty(text)){

bgBufImageGraphics.setColor(new Color(color));

bgBufImageGraphics.setFont(new Font("黑体",Font.PLAIN, 47));

FontMetrics fm = bgBufImageGraphics.getFontMetrics(new Font("黑体",Font.PLAIN, 47));

int textWidth = fm.stringWidth(text);

int qrCodeWidth = qrCodeImage.getWidth();

bgBufImageGraphics.drawString(text,width + ((qrCodeWidth - textWidth) / 2),(height - 50));

}

bgBufImageGraphics.dispose();

ImageIO.write(bgBufImage, "png", new File("D:\\file\\demo1.png"));

System.out.println("生成图片完成");

}

2.合成海报保存到oss服务器

public String compositePoster(double x,double y,String backgroundUrl,String qrCodeUrl,String text,Integer color) throws IOException {

BufferedImage bgBufImage = ImageIO.read(new URL(backgroundUrl)); //获取图片

Graphics2D bgBufImageGraphics = bgBufImage.createGraphics(); //创建一个图形

BufferedImage qrCodeImage = ImageIO.read(new URL(qrCodeUrl)); //获取图片

Integer width = Integer.valueOf(new BigDecimal(x * bgBufImage.getWidth() / 100).setScale(0, BigDecimal.ROUND_HALF_UP).toString());

Integer height = Integer.valueOf(new BigDecimal(y * bgBufImage.getHeight() / 100).setScale(0, BigDecimal.ROUND_HALF_UP).toString());

bgBufImageGraphics.drawImage(qrCodeImage, width, height, qrCodeImage.getWidth(), qrCodeImage.getHeight(), null); //设置图片的位置

if (!StringUtils.isEmpty(text)){

bgBufImageGraphics.setColor(new Color(color));

bgBufImageGraphics.setFont(new Font("黑体",Font.PLAIN, 47));

FontMetrics fm = bgBufImageGraphics.getFontMetrics(new Font("黑体",Font.PLAIN, 47));

int textWidth = fm.stringWidth(text);

int qrCodeWidth = qrCodeImage.getWidth();

bgBufImageGraphics.drawString(text,width + ((qrCodeWidth - textWidth) / 2),(height - 50));

}

bgBufImageGraphics.dispose();

ByteArrayOutputStream bs = new ByteArrayOutputStream();

ImageOutputStream imgOut = ImageIO.createImageOutputStream(bs);

ImageIO.write(bgBufImage, "png", imgOut);

InputStream inSteam = new ByteArrayInputStream(bs.toByteArray());

String fileName = URLDecoder.decode(backgroundUrl.split("/")[backgroundUrl.split("/").length -1 ], "UTF-8");

String uuid = UUID.randomUUID().toString() + ".png";

ossUtils.uploadFiles(inSteam,uuid,fileName);

return ossUtils.getObjectUrl(uuid);

}

传入的参数

合成的效果