1.成图如下，楼主随意调试了下写了个模板，废话不多说直接贴代码 2.service层
// An highlighted block */ @Service public class PosterServiceImpl implements PosterService { //定义一个图片缓存类 private BufferedImage image; private int imageWidth = 300; //图片的宽度 private int imageHeight = 500; //图片的高度 /*oss的配置项，桶名、路径等*/ private String endpoint= OSSProperties.ALIYUN_ENDPOINT; private String accessKeyId=OSSProperties.ALIYUN_ACCESS_ID; private String accessKeySecret=OSSProperties.ALIYUN_ACCESS_KEY; private String bucketName=OSSProperties.ALIYUN_BUCKET; /** * * @param productname 产品名称 * @param originalPrice 原价 * @param price 现价 * @param urlone 图片路径 * @param twourl 图片路径 * @param threeurl 图片路径 * @return * @throws IOException */ public String graphicsGeneration(String productname, String originalPrice, String price,String urlone,String twourl,String threeurl) throws IOException { int H_title = 30; //头部高度 int H_image =50; int H_image_Text =50; int H_mainPic = 230; //轮播广告高度 int tit_image_text=(H_title+H_image+H_image_Text); int shops_2_top = H_title+H_image+H_image_Text+H_mainPic+20; //实例化缓存类 image = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB); //设置图片的背景色 Graphics2D main = image.createGraphics(); main.setColor(Color.white); main.fillRect(0, 0, imageWidth, imageHeight); //***********************页面头部 Graphics title = image.createGraphics(); //设置区域颜色 title.setColor(new Color(255, 255, 255)); //填充区域并确定区域大小位置 title.fillRect(0, 0, imageWidth, H_title+20); //设置字体颜色，先设置颜色，再填充内容 title.setColor(Color.black); //设置字体 Font titleFont = new Font("黑体", Font.BOLD, 20); title.setFont(titleFont); title.drawString("驿货·精选", 100, H_title); //***********************页面头像 BufferedImage bimg = null; BufferedImage bimg1 = null; BufferedImage bimg2 = null; Graphics mainPic1 = image.getGraphics(); // 构造URL URL url = new URL("https://bj-yys.oss-cn-beijing.aliyuncs.com/bj-yys/微信图片_20200512173007.png"); // 打开连接 URLConnection con = url.openConnection(); //设置请求超时为5s con.setConnectTimeout(5*1000); // 输入流 InputStream is = con.getInputStream(); try { bimg = javax.imageio.ImageIO.read(is); } catch (Exception e) {} if(bimg!=null){ //第一个参数对应图片 //第二个参数对应x轴 //第三个参数对应y轴 //第四个参数对应图片宽度 //第五个参数对应图片高度 //第六个参数图像观察者 mainPic1.drawImage(bimg, 10, H_title+15, 60, 50, null); //填充区域并确定区域大小位置 mainPic1.fillRect(75,H_title+15 , imageWidth, H_title+H_image); //设置字体颜色，先设置颜色，再填充内容 mainPic1.setColor(Color.black); //设置字体样式和大小 Font cname = new Font("宋体", Font.CENTER_BASELINE, 12); mainPic1.setFont(cname); String pname= "智能门锁人脸识别,智能门锁人脸识别，智能门锁人脸识别"; //判断产品名称长度是否换行 if (pname.length()>15){ String pnamesub1 = pname.substring(0, 15); String pnamesub2 = pname.substring(15, pname.length()); mainPic1.drawString(pnamesub1, 85, H_title+15+12); mainPic1.drawString(pnamesub2, 85, H_title+15+12+15); }else { mainPic1.drawString(pname, 85, H_title+15+12); } mainPic1.dispose(); } //***********************插入原价格 原价格和现价格字体样式不同所以分开设置 Graphics mainPicPrice = image.getGraphics(); mainPicPrice.setColor(Color.red); //设置字体 Font mainPicPriceFont = new Font("宋体", Font.BOLD, 24); mainPicPrice.setFont(mainPicPriceFont); mainPicPrice.drawString("￥168.00", 10, tit_image_text); mainPicPrice.dispose(); //***********************插入现价格 Graphics Price = image.getGraphics(); Price.setColor(Color.gray); //设置字体 Font PriceFont = new Font("宋体", Font.BOLD, 14); Price.setFont(PriceFont); Price.drawLine(140,tit_image_text-7,250,tit_image_text-7); Price.drawString("吊牌价￥299.00", 140, tit_image_text); Price.dispose(); //***********************插入产品大图，从oss下载路径直接获取 Graphics mainPic = image.getGraphics(); // 构造URL https://aliyuncs.com/1593412615%281%29.jpg URL middleurl = new URL("图片路径"); URL middleurl2 = new URL("图片路径"); URL middleurl3 = new URL("图片路径"); // 打开连接 URLConnection middlecon = middleurl.openConnection(); URLConnection middlecon2 = middleurl2.openConnection(); URLConnection middlecon3 = middleurl3.openConnection(); //设置请求超时为5s middlecon.setConnectTimeout(5*1000); middlecon2.setConnectTimeout(5*1000); middlecon3.setConnectTimeout(5*1000); // 输入流 InputStream middleis = middlecon.getInputStream(); InputStream middleis2 = middlecon2.getInputStream(); InputStream middleis3 = middlecon3.getInputStream(); try { bimg = javax.imageio.ImageIO.read(middleis); bimg1 = javax.imageio.ImageIO.read(middleis2); bimg2 = javax.imageio.ImageIO.read(middleis3); if(bimg!=null){ mainPic.drawImage(bimg, 10, tit_image_text+10, imageWidth-20, H_mainPic, null); } if(bimg1!=null){ mainPic.drawImage(bimg, 10, shops_2_top, 85, 85, null); } if(bimg2!=null){ mainPic.drawImage(bimg2, 105, shops_2_top, 85, 85, null); } mainPic.dispose(); } catch (Exception e) {} //*************小程序码 Graphics particularsImage3 = image.getGraphics(); try { bimg = javax.imageio.ImageIO.read(new File("这个可以调用生成二维码的接口把二维码加入海报")); if(bimg!=null){ particularsImage3.drawImage(bimg, 210, shops_2_top, 70, 70, null); particularsImage3.dispose(); } } catch (Exception e) {} Graphics PriceText = image.getGraphics(); PriceText.setColor(Color.gray); //设置字体 Font PriceTextFont = new Font("ITALIC", Font.PLAIN, 11); PriceText.setFont(PriceTextFont); PriceText.drawString("长按识别小程序", 205, shops_2_top+85); PriceText.drawString("码购买该商品", 208, shops_2_top+100); PriceText.dispose(); //转换上传到oss ByteArrayOutputStream bs = new ByteArrayOutputStream(); ImageOutputStream imOut = ImageIO.createImageOutputStream(bs); ImageIO.write(image, "jpg", imOut); InputStream inputStream = new ByteArrayInputStream(bs.toByteArray()); OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret); Random random = new Random(); String name = random.nextInt(10000)+ System.currentTimeMillis() + "_YES.jpg"; // 上传文件 PutObjectResult putResult = ossClient.putObject(bucketName,"poster/"+name,inputStream); OSSUtil ossUtil =new OSSUtil(); String imgUrl = ossUtil.getImgUrl("poster/" + name); /*// 把缓存图片保存到本地文件 本地调试时使用不需要就可以注释上 boolean jpg = ImageIO.write(image, "jpg", new File("c:\\caerteImage.jpg"));*/ return imgUrl; } }3.controller层
// An highlighted block String ewew =""; try { ewew = posterService.graphicsGeneration("产品名称", "原价格", "现价", "大图url","小图url","小图url"); } catch (Exception e) { e.printStackTrace(); } return ewew;用到的oss工具类可以去链接: oss上传视频.的文章下copy，以上就是java生成海报图片并上传oss返回url的具体实现，好记性不如烂笔头~
