JAVA生成二维码,图片合成,图片添加文字对应资源和代码

package com.yabo.core.util; import com.google.zxing.BarcodeFormat; import com.google.zxing.EncodeHintType; import com.google.zxing.MultiFormatWriter; import com.google.zxing.WriterException; import com.google.zxing.client.j2se.MatrixToImageWriter; import com.google.zxing.common.BitMatrix; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; import javax.imageio.ImageIO; import javax.imageio.stream.ImageOutputStream; import java.awt.*; import java.awt.image.BufferedImage; import java.io.*; import java.util.HashMap; import java.util.Map; import java.util.Objects; /** * 二维码以及图片合成工具类 * * @author taiyi */ public class ZxingUtils { public static BufferedImage enQRCode(String contents, int width, int height) throws WriterException { //定义二维码参数 final Map<EncodeHintType, Object> hints = new HashMap(8) { { //编码 put(EncodeHintType.CHARACTER_SET, "UTF-8"); //容错级别 put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); //边距 put(EncodeHintType.MARGIN, 0); } }; return enQRCode(contents, width, height, hints); } /** * 生成二维码 * * @param contents 二维码内容 * @param width 图片宽度 * @param height 图片高度 * @param hints 二维码相关参数 * @return BufferedImage对象 * @throws WriterException 编码时出错 * @throws IOException 写入文件出错 */ public static BufferedImage enQRCode(String contents, int width, int height, Map hints) throws WriterException { // String uuid = UUID.randomUUID().toString().replace("-", ""); //本地完整路径 // String pathname = path + "/" + uuid + "." + format; //生成二维码 BitMatrix bitMatrix = new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE, width, height, hints); // Path file = new File(pathname).toPath(); //将二维码保存到路径下 // MatrixToImageWriter.writeToPa(bitMatrix, format, file); // return pathname; return MatrixToImageWriter.toBufferedImage(bitMatrix); } /** * 将图片绘制在背景图上 * * @param backgroundPath 背景图路径 * @param zxingImage 图片 * @param x 图片在背景图上绘制的x轴起点 * @param y 图片在背景图上绘制的y轴起点 * @return */ public static BufferedImage drawImage(String backgroundPath, BufferedImage zxingImage, int x, int y) throws IOException { //读取背景图的图片流 BufferedImage backgroundImage; //Try-with-resources 资源自动关闭,会自动调用close()方法关闭资源,只限于实现Closeable或AutoCloseable接口的类 try (InputStream imagein = new FileInputStream(backgroundPath)) { backgroundImage = ImageIO.read(imagein); } return drawImage(backgroundImage, zxingImage, x, y); } /** * 将图片绘制在背景图上 * * @param backgroundImage 背景图 * @param zxingImage 图片 * @param x 图片在背景图上绘制的x轴起点 * @param y 图片在背景图上绘制的y轴起点 * @return * @throws IOException */ public static BufferedImage drawImage(BufferedImage backgroundImage, BufferedImage zxingImage, int x, int y) throws IOException { Objects.requireNonNull(backgroundImage, ">>>>>背景图不可为空"); Objects.requireNonNull(zxingImage, ">>>>>二维码不可为空"); //二维码宽度+x不可以超过背景图的宽度,长度同理 if ((zxingImage.getWidth() + x) > backgroundImage.getWidth() || (zxingImage.getHeight() + y) > backgroundImage.getHeight()) { throw new IOException(">>>>>二维码宽度+x不可以超过背景图的宽度,长度同理"); } //合并图片 Graphics2D g = backgroundImage.createGraphics(); g.drawImage(zxingImage, x, y, zxingImage.getWidth(), zxingImage.getHeight(), null); return backgroundImage; } /** * 将文字绘制在背景图上 * * @param backgroundImage 背景图 * @param x 文字在背景图上绘制的x轴起点 * @param y 文字在背景图上绘制的y轴起点 * @return * @throws IOException */ public static BufferedImage drawString(BufferedImage backgroundImage, String text, int x, int y,Font font,Color color) { //绘制文字 Graphics2D g = backgroundImage.createGraphics(); //设置颜色 g.setColor(color); //消除锯齿状 g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB); //设置字体 g.setFont(font); //绘制文字 g.drawString(text, x, y); return backgroundImage; } public static InputStream bufferedImageToInputStream(BufferedImage backgroundImage) throws IOException { return bufferedImageToInputStream(backgroundImage, "png"); } /** * backgroundImage 转换为输出流 * * @param backgroundImage * @param format * @return * @throws IOException */ public static InputStream bufferedImageToInputStream(BufferedImage backgroundImage, String format) throws IOException { ByteArrayOutputStream bs = new ByteArrayOutputStream(); try ( ImageOutputStream imOut = ImageIO.createImageOutputStream(bs)) { ImageIO.write(backgroundImage, format, imOut); InputStream is = new ByteArrayInputStream(bs.toByteArray()); return is; } } /** * 保存为文件 * * @param is * @param fileName * @throws IOException */ public static void saveFile(InputStream is, String fileName) throws IOException { try (BufferedInputStream in = new BufferedInputStream(is); BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(fileName))) { int len; byte[] b = new byte[1024]; while ((len = in.read(b)) != -1) { out.write(b, 0, len); } } } public static void main(String[] args) { int width = 293; int height = 293; String contcent = "http://ceshi.yabolive.tv/Nesting/invite/download.html?agentCode=10086"; BufferedImage zxingImage = null; try { //二维码图片流 zxingImage = ZxingUtils.enQRCode(contcent, width, height); } catch (WriterException e) { e.printStackTrace(); } String backgroundPath = "C:/Users/saer/Desktop/background.png"; InputStream inputStream = null; try { //合成二维码和背景图 BufferedImage image = ZxingUtils.drawImage(backgroundPath, zxingImage, 224, 754); //绘制文字 Font font = new Font("微软雅黑", Font.BOLD, 35); String text = "17000"; image = ZxingUtils.drawString(image, text, 375, 647,font,new Color(244,254,189)); //图片转inputStream inputStream = ZxingUtils.bufferedImageToInputStream(image); } catch (IOException e) { e.printStackTrace(); } String originalFileName = "C:/Users/saer/Desktop/99999.png"; try { //保存为本地图片 ZxingUtils.saveFile(inputStream, originalFileName); } catch (IOException e) { e.prin