Java 生成文字图片

Java 生成文字图片

Java 生成文字图片

  // 64 size 的值 大写宽度为40.5 我们取值稍大一点int width = (keyword.length() + 1) * 45;if (width < ImageAttachmentServiceImpl.IMG_HEIGHT.intValue()) {width = ImageAttachmentServiceImpl.IMG_WIDTH;}//设置字体大小Font font = new Font("Times New Roman", Font.PLAIN, ImageAttachmentServiceImpl.FONT_SIZE);BufferedImage image = new BufferedImage(width,ImageAttachmentServiceImpl.IMG_HEIGHT, BufferedImage.TYPE_INT_BGR);Graphics g = Graphics();g.setClip(0, 0, width, ImageAttachmentServiceImpl.IMG_HEIGHT);g.setColor(Color.white);// 先用黑色填充整张图片,也就是背景g.fillRect(0, 0, width, ImageAttachmentServiceImpl.IMG_HEIGHT);// 在换成黑色g.setColor(Color.black);// 设置画笔字体g.setFont(font);/** 用于获得垂直居中y */Rectangle clip = g.getClipBounds();FontMetrics fm = g.getFontMetrics(font);int textWidth = fm.stringWidth(keyword);int x = (width - textWidth) / 2;int ascent = fm.getAscent();int descent = fm.getDescent();int y = (clip.height - (ascent + descent)) / 2 + ascent;g.drawString(keyword, x, y);g.dispose();File file = new File(imageRootPath + keyword + ".jpg");if (!ists()) {file.mkdirs();}// 输出png图片ImageIO.write(image, "jpg", file);