java生成海报图，包含二维码和昵称等
- 2019 年 12 月 2 日
- 筆記
首先先给大家看下效果图，由于此二维码是能够扫描访问的。所以我给他打码了。
下面再来说说具体实现的过程吧
首先创建一个工具类 PosterUtil
private static final String BACKGROUND_IMG = "images/bg.png"; // 背景图片 private static final String result_img = "D:/result.png"; // 最终输出图片 //二维码图片 private static final String destImagePaths="D:/srv/data/static/688daa4b53c64c3aa7de9af95749a775.jpg";
public static boolean drawPoster(SmUserinfo smUserinfo,String destImagePaths,String resultImgs){ try { long startTime = System.currentTimeMillis(); // 1. 创建画布 BufferedImage backgroundImg = ImageIO.read(getInputStream(BACKGROUND_IMG)); BufferedImage canvas = new BufferedImage(backgroundImg.getWidth(),backgroundImg.getHeight(),BufferedImage.TYPE_INT_RGB); Graphics2D g = (Graphics2D) canvas.getGraphics(); // 设置抗锯齿 g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB); // 2. 将头像设置为圆角 String avatarImgs=smUserinfo.getHeadId(); System.out.println("avatarImgs"+smUserinfo.getHeadId()); BufferedImage avatar = ImageIO.read(new URL(avatarImgs)); int width = 120; //透明底的图片 BufferedImage newAvatar = new BufferedImage(width, width, BufferedImage.TYPE_4BYTE_ABGR); Graphics2D graphics = newAvatar.createGraphics(); //把图片切成一个圓 { graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); //留一个像素的空白区域，这个很重要，画圆的时候把这个覆盖 int border = 1; //图片是一个圆型 Ellipse2D.Double shape = new Ellipse2D.Double(border, border, width - border * 2, width - border * 2); //需要保留的区域 graphics.setClip(shape); graphics.drawImage(avatar, border, border, width - border * 2, width - border * 2, null); graphics.dispose(); } //在圆图外面再画一个圆 { //新创建一个graphics，这样画的圆不会有锯齿 graphics = newAvatar.createGraphics(); graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); int border = 3; //画笔是4.5个像素，BasicStroke的使用可以查看下面的参考文档 //使画笔时基本会像外延伸一定像素，具体可以自己使用的时候测试 Stroke s = new BasicStroke(4.5F, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND); graphics.setStroke(s); graphics.setColor(Color.WHITE); graphics.drawOval(border, border, width - border * 2, width - border * 2); graphics.dispose(); } // 3. 将背景图和头像结合 // 画背景 g.drawImage(backgroundImg.getScaledInstance(backgroundImg.getWidth(), backgroundImg.getHeight(), Image.SCALE_DEFAULT), 0, 0, null); // 背景上画头像 g.drawImage(newAvatar.getScaledInstance(150, 150, Image.SCALE_DEFAULT), 90, 160, null); // 4. 写字（昵称） g.setColor(Color.BLACK); g.setFont(new Font("黑体",Font.BOLD,22)); g.drawString(smUserinfo.getName(), 160, 380); // 5. 画字 g.setColor(new Color(33, 33, 33, 128)); g.setFont(new Font("宋体",Font.BOLD,18)); g.drawString(smUserinfo.getJob(), 160, 460); // 5. 画字 g.setColor(new Color(33, 33, 33, 128)); g.setFont(new Font("宋体",Font.BOLD,18)); g.drawString(smUserinfo.getPhoneNum(), 160, 510); // 5. 画字 g.setColor(new Color(33, 33, 33, 128)); g.setFont(new Font("宋体",Font.BOLD,18)); g.drawString(smUserinfo.getCompanyName(), 160, 570); // 画二维码 String qrCodeUrl=destImagePaths; BufferedImage qrCodeUrls = ImageIO.read(new File(qrCodeUrl)); g.drawImage(qrCodeUrls.getScaledInstance(200,200, Image.SCALE_DEFAULT), 520, 380, null); g.dispose(); File resultImg = new File(resultImgs); ImageIO.write(canvas, "png", resultImg); System.out.println("生成成功！"); System.out.println("耗时: " + (System.currentTimeMillis()-startTime)/1000.0 + "s"); System.out.println("生成文件路径: " + resultImg.getAbsolutePath()); return true; }catch (Exception e) { e.printStackTrace(); return false; } }
/** * 获取resources下的文件输入流 */ private static InputStream getInputStream(String fileName) { return PosterUtil.class.getClassLoader().getResourceAsStream(fileName); }
main方法
public static void main(String[] args)throws IOException { SmUserinfo smUserinfo =new SmUserinfo(); smUserinfo.setHeadId("http://www.downxia.com/uploadfiles/2018/0616/20180616101015887.jpgn"); smUserinfo.setName("张三"); smUserinfo.setJob("销售经理"); smUserinfo.setPhoneNum("xxxxxx"); smUserinfo.setCompanyName("思源教育有限公司"); drawPoster(smUserinfo,destImagePaths,result_img); }
