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Spring Boot + hutool 创建海报图片

news 2025/7/19 15:02:29

/*** 分享,生成图片* @param id* @return*/@GetMapping("/getShareImg")public void getShareImg(String id,HttpServletResponse response) throws IOException {CouponConsignSaleClassify byId = couponConsignSaleClassifyService.getById(id);if(byId == null){throw new GlobalException("查询 id 为空 ");}CouponConsignSaleGoods one = couponConsignSaleGoodsService.lambdaQuery().eq(CouponConsignSaleGoods::getClassifyId, id).ge(CouponConsignSaleGoods::getStock, 1).orderByAsc(CouponConsignSaleGoods::getPurchasePrice).last(" limit 0,1").one();/*final int w = 270 * 2;final int h = 340 * 2;*/final int w = 405;final int h = 550;BufferedImage bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_BGR);Graphics2D graphics2D = bi.createGraphics();//绘制白色背景graphics2D.setColor(Color.white);graphics2D.fillRect(0, 0, w, h);//释放资源graphics2D.dispose();String tempPath = System.getProperty("java.io.tmpdir");//System.out.println(tempPath);File outputfile = new File(tempPath+"poster.jpg");ImageIO.write(bi, "jpg", outputfile);//分类图片Image image = ImgUtil.getImage(new URL(transformStyle(byId.getImg())));File scaleImg = new File(tempPath+"imgScale.jpg");ImgUtil.scale(image,scaleImg,1.2f);BufferedImage read = ImageIO.read(scaleImg);//画图片ImgUtil.pressImage(outputfile,outputfile,read,0,-140,1f);//商品名称String name = byId.getName();ImgUtil.pressText(outputfile,outputfile,name,Color.black,new Font("黑体", Font.PLAIN, 20),-170+(name.length() * 10),0,0.8f);String lowestPrice=byId.getMaxPrice()==null?"":byId.getMaxPrice().toPlainString();if(one != null){lowestPrice = one.getPrice().toPlainString();}//最低价格String p="最低价格:"+lowestPrice;ImgUtil.pressText(outputfile,outputfile,p,Color.red,new Font("黑体", Font.PLAIN, 22),-200 + (p.length() * 11),35,0.8f);//原价ImgUtil.pressText(outputfile,outputfile,"原价:"+(byId.getMaxPrice()==null?"-":byId.getMaxPrice()),Color.black,new Font("黑体", Font.PLAIN, 15),50,30,0.8f);String url="http://qy.gsjf.cc/h5/#/pages/buy/consignBuy/consignBuy?id="+byId.getId();String qrFile=tempPath+"qrFile.jpg";File file = FileUtil.file(qrFile);//生成二维码QrCodeUtil.generate(url, 180, 180,file);BufferedImage qrFile0 = ImageIO.read(file);//显示二维码ImgUtil.pressImage(outputfile,outputfile,qrFile0,0,130,1f);//显示文字ImgUtil.pressText(outputfile,outputfile,"识别二维码查看详情",Color.black,new Font("黑体", Font.PLAIN, 16),-07,250,0.6f);/* ByteArrayOutputStream os = new ByteArrayOutputStream();ImageIO.write(bi, "jpg", os);*/byte[] bFile = Files.readAllBytes(outputfile.toPath());response.setContentType("image/jpg"); //设置返回的文件类型OutputStream respOut = response.getOutputStream();respOut.write(bFile);respOut.flush();respOut.close();}/*** 对中文字符进行UTF-8编码* @param source 要转义的字符串* @return* @throws UnsupportedEncodingException*/public static String transformStyle(String source) throws UnsupportedEncodingException{char[] arr = source.toCharArray();StringBuilder sb = new StringBuilder();for(int i = 0; i < arr.length; i++){char temp = arr[i];if(isChinese(temp)){sb.append(URLEncoder.encode("" + temp, "UTF-8"));continue;}sb.append(arr[i]);}return sb.toString();}/*** 判断是不是中文字符* @param c* @return*/public static boolean isChinese(char c){Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);if(ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS|| ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS|| ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A|| ub == Character.UnicodeBlock.GENERAL_PUNCTUATION|| ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION|| ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS){return true;}return false;}

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