分享：Java 开发精美艺术二维码

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Java 开发精美艺术二维码

看到网络上各种各样的二维码层出不穷，好像很炫酷的样子，一时兴起，我也要制作这种炫酷二维码效果

例如：

根据以往例子

根据之前所做的小项目 java 开发二维码系统

以这个为基础，将实现精美艺术二维码

基本代码：

// 创建二维码对象 Qrcode qrcode = new Qrcode(); // 设置二维码的纠错级别 // L(7%) M(15%) Q(25%) H(30%) qrcode.setQrcodeErrorCorrect('L'); // 一般纠错级别小一点 // 设置二维码的编码模式 Binary(按照字节编码模式) qrcode.setQrcodeEncodeMode('B'); // 设置二维码的版本号 1-40 1:20*21 2:25*25 40:177*177 qrcode.setQrcodeVersion(7); // 生成二维码中要存储的信息 String qrData = "https://ainyi.com"; // 设置一下二维码的像素 int width = 300; int height = 300; BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); // 绘图 Graphics2D gs = bufferedImage.createGraphics(); gs.setBackground(Color.WHITE); gs.setColor(Color.BLACK); gs.clearRect(0, 0, width, height); // 清除下画板内容// 设置下偏移量，如果不加偏移量，有时会导致出错 int pixoff = 2;byte[] d = qrData.getBytes("utf-8"); if(d.length > 0 && d.length <120){ boolean[][] s = qrcode.calQrcode(d); for(int i=0;i<s.length;i++){ for(int j=0;j<s.length;j++){ if(s[j][i]){ gs.fillRect(j*3+pixoff, i*3+pixoff, 3, 3); } } } } gs.dispose(); bufferedImage.flush(); ImageIO.write(bufferedImage, "png", new File("E:/code/qrcode.png"));

准备工作

java 可以实现生成二维码，需要用到 Qrcode 的 jar 包

java、jsp
struts2 以及相关 jar 包
Qrcode.jar
文件上传相关 jar 包

自己编写摸索出来的艺术二维码算法
响应式

实现流程

因为要实现精美艺术二维码，把黑白二维码的黑色部分，点状部分替换成有颜色的点，汇聚成一张精美的二维码

那么实现的关键点就是：替换

将制作好的小图片素材，按照编号命名，三个码眼使用大图片素材，其他使用不相同小图片素材，绘制二维码图片的时候，将画笔改为将插入图片素材 drawImage

根据不同类型的艺术二维码（不同的素材），使用不同的算法

话不多说，上代码

/** * QrcodeText 二维码 * @author krry * @version 1.0 * */ public class QrcodeText{ private static int width = 975; private static int height = 975; // 设置偏移量，不设置可能导致解析出错 private static int pixoff = 25; // 像素大小 private static int pix = 25; // 二维码数组的长度 private static int codeLength; // 随机数，生成[0,2]之间的随机整数,取长度为3的数组下标 private static int max = 3; //素材图片容器 private static BufferedImage image_eye; private static BufferedImage image11; private static BufferedImage image12; private static BufferedImage image13; private static BufferedImage image21; private static BufferedImage image22; private static BufferedImage image23; private static BufferedImage image31; private static BufferedImage image32; private static BufferedImage image33; private static BufferedImage image41; private static BufferedImage image42; private static BufferedImage image43; /** * 生成二维码 * @param message 二维码内容 * @param type 二维码类型如：锁屏 * @param filename 二维码类型下的标号如1 * @param arti 使用算法类型如0 热门 * @param transparent 是否透明 1：透明 0背景是白色 * @param request请求 * @return */ public static String qrcode(String message,String type,String filename,String arti,String transparent,HttpServletRequest request){ String pathName = null; FileOutputStream outputStream = null; try{ //创建二维码对象 Qrcode qrcode = new Qrcode(); //设置二维码的纠错级别 //L(7%) M(15%) Q(25%) H(30%) qrcode.setQrcodeErrorCorrect('L'); //一般纠错级别小一点 //设置二维码的编码模式 Binary(按照字节编码模式) qrcode.setQrcodeEncodeMode('B'); //设置二维码的版本号 1-40 1:20*21 2:25*25 40:177*177 qrcode.setQrcodeVersion(5); //获取图片缓存流对象 BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); //获取画笔 Graphics2D gs = image.createGraphics(); //判断是否使用二维码背景颜色是透明 if(transparent.equals("yes")){ //设置透明 image = gs.getDeviceConfiguration().createCompatibleImage(width, height, Transparency.TRANSLUCENT); gs = image.createGraphics(); } else { gs.setBackground(Color.WHITE); gs.clearRect(0, 0, width, height); } //设置内容 String content = message; byte[] contentsBytes = content.getBytes("utf-8"); //二维码 boolean[][] code = qrcode.calQrcode(contentsBytes); //获取二维码数组的长度 codeLength = code.length; //码眼部分全部设置为false for(int i=0;i<7;i++){ for(int j=0;j<7;j++){ code[i][j]=false; } for(int j=codeLength-7;j<codeLength;j++){ code[i][j]=false; code[j][i]=false; } } //获取资源地址 String aspath = request.getServletContext().getRealPath("/resource"); //加载图片 loadImage(aspath,type,filename); //绘制二维码，选择算法 if(arti.equals("0")) drawQrcodeHot(gs, code); //热门算法 else if(arti.equals("1")) drawQrcodeOrdi(gs, code); //最初算法 else if(arti.equals("2")) drawQrcodeRiTojiao(gs, code); //三角算法 //如果类型不是单码，则装载背景图片，将二维码写进背景图片中，只有单码没有背景 if(!type.equals("dan")){ //装载背景图片 BufferedImage imageBG = ImageIO.read(new FileInputStream(aspath+"\\images\\ImageMaker\\"+type+"\\"+filename+"\\bg.jpg")); //获取背景图片的画笔 Graphics2D bg = imageBG.createGraphics();//位置坐标 int x = 0; int y = 0; //如果类型是方形，判断二维码在背景图片的位置,单码图片缩小到640像素 if(type.equals("fang")){ x = (imageBG.getWidth() - 640) / 2; y = (imageBG.getHeight() - 640) / 2; } //如果类型是名片，判断二维码在背景图片的位置,单码图片缩小到640像素 if(type.equals("ming")){ x = (imageBG.getWidth() - 100) / 2; y = (imageBG.getHeight() - 640) / 2; } //如果类型是锁屏，判断二维码在背景图片的位置,单码图片缩小到640像素 if(type.equals("suo")){ x = (imageBG.getWidth() - 640) / 2; y = (imageBG.getHeight() - 1100) / 2; } //将单码图片写进背景图片中,单码图片缩小到640像素 bg.drawImage(image, x, y, 640, 640, null); //释放画笔 bg.dispose(); gs.dispose(); //生成二维码图片 String realPath = request.getRealPath("/"); //String realPath = 服务器项目的地址; pathName = new Date().getTime()+".jpg"; outputStream = new FileOutputStream(new File(realPath+"upload\\", pathName)); ImageIO.write(imageBG, "jpg", outputStream); } else { //如果类型是单码，直接释放输出 //释放画笔 gs.dispose(); //生成二维码图片 String realPath = request.getRealPath("/"); //String realPath = 服务器项目的地址; pathName = new Date().getTime()+".png"; outputStream = new FileOutputStream(new File(realPath+"upload\\", pathName)); ImageIO.write(image, "png", outputStream); } } catch (Exception e){ e.printStackTrace(); } finally { try { //关闭流 outputStream.close(); } catch (IOException e) { e.printStackTrace(); } } return pathName; } /** * 加载图片素材 * @param aspath * @param type * @param filename */ public static void loadImage(String aspath,String type,String filename){ try { //加载码眼 image_eye = ImageIO.read(new FileInputStream(aspath+"\\images\\ImageMaker\\"+type+"\\"+filename+"\\eye.png")); //装载50*50的图片素材 image11 = ImageIO.read(new FileInputStream(aspath+"\\images\\ImageMaker\\"+type+"\\"+filename+"\\11.png")); image12 = ImageIO.read(new FileInputStream(aspath+"\\images\\ImageMaker\\"+type+"\\"+filename+"\\12.png")); image13 = ImageIO.read(new FileInputStream(aspath+"\\images\\ImageMaker\\"+type+"\\"+filename+"\\13.png")); //装载100*50的图片素材 image21 = ImageIO.read(new FileInputStream(aspath+"\\images\\ImageMaker\\"+type+"\\"+filename+"\\21.png")); image22 = ImageIO.read(new FileInputStream(aspath+"\\images\\ImageMaker\\"+type+"\\"+filename+"\\22.png")); image23 = ImageIO.read(new FileInputStream(aspath+"\\images\\ImageMaker\\"+type+"\\"+filename+"\\23.png")); //装载50*100的图片素材 image31 = ImageIO.read(new FileInputStream(aspath+"\\images\\ImageMaker\\"+type+"\\"+filename+"\\31.png")); image32 = ImageIO.read(new FileInputStream(aspath+"\\images\\ImageMaker\\"+type+"\\"+filename+"\\32.png")); image33 = ImageIO.read(new FileInputStream(aspath+"\\images\\ImageMaker\\"+type+"\\"+filename+"\\33.png")); //装载100*100的图片素材 image41 = ImageIO.read(new FileInputStream(aspath+"\\images\\ImageMaker\\"+type+"\\"+filename+"\\41.png")); image42 = ImageIO.read(new FileInputStream(aspath+"\\images\\ImageMaker\\"+type+"\\"+filename+"\\42.png")); image43 = ImageIO.read(new FileInputStream(aspath+"\\images\\ImageMaker\\"+type+"\\"+filename+"\\43.png")); } catch (Exception e) { e.printStackTrace(); } } /** * 绘制算法0 热门二维码素材有50*50 50*100 100*50 100*100 * @param gs 画笔 * @param code 二维码数组 */ public static void drawQrcodeHot(Graphics2D gs,boolean[][] code){ //把图片素材放进数组 BufferedImage[] img1 = {image11,image12,image13}; BufferedImage[] img2 = {image21,image22,image23}; BufferedImage[] img3 = {image31,image32,image33}; BufferedImage[] img4 = {image41,image42,image43}; //通用地绘制码眼 gs.drawImage(image_eye, pix, pix, pix*7, pix*7, null); gs.drawImage(image_eye, (codeLength-7)*pix+pixoff, pix, pix*7, pix*7, null); gs.drawImage(image_eye, pix, (codeLength-7)*pix+pixoff, pix*7, pix*7, null); Random random = new Random(); // 绘制 for (int i = 0; i < codeLength; i++) { for (int j = 0; j < codeLength; j++) { if (code[i][j]) { if (i+1 < codeLength && j+1 < codeLength && code[i][j + 1] && code[i + 1][j + 1] && code[i + 1][j]){ //随机取图片，画100*100的图 int s4 = random.nextInt(max); gs.drawImage(img4[s4], i * pix + pixoff, j * pix + pixoff, pix * 2, pix * 2, null); code[i][j + 1] = code[i + 1][j] = code[i + 1][j + 1] = false; } else if(j+1 < codeLength && code[i][j+1]){ //随机取图片，画50*100的图 int s3 = random.nextInt(max); gs.drawImage(img3[s3], i * pix + pixoff, j * pix + pixoff, pix, pix*2, null); code[i][j+1] = false; } else if (i+1 < codeLength && code[i+1][j]) { //随机取图片，画100*50的图 int s2 = random.nextInt(max); gs.drawImage(img2[s2], i * pix + pixoff, j * pix + pixoff, pix * 2, pix, null); code[i+1][j] = false; } else { //随机取图片，画50*50的图 int s1 = random.nextInt(max); gs.drawImage(img1[s1], i * pix + pixoff, j * pix + pixoff, pix, pix, null); } } } } } /** * 绘制算法2 二维码素材有50*50 50*100 100*50 100*100 其中100*100是三个角的算法，右上角没有填充 * @param gs 画笔 * @param code 二维码数组 */ public static void drawQrcodeRiTojiao(Graphics2D gs,boolean[][] code){ System.out.println("三角啊"); //把图片素材放进数组 BufferedImage[] img1 = {image11,image12,image13}; BufferedImage[] img2 = {image21,image22,image23}; BufferedImage[] img3 = {image31,image32,image33}; BufferedImage[] img4 = {image41,image42,image43}; //通用地绘制码眼 gs.drawImage(image_eye, pix, pix, pix*7, pix*7, null); gs.drawImage(image_eye, (codeLength-7)*pix+pixoff, pix, pix*7, pix*7, null); gs.drawImage(image_eye, pix, (codeLength-7)*pix+pixoff, pix*7, pix*7, null); Random random = new Random(); // 绘制 for (int i = 0; i < codeLength; i++) { for (int j = 0; j < codeLength; j++) { if (code[i][j]) { if (i+1 < codeLength && j+1 < codeLength && code[i][j + 1] && code[i + 1][j + 1]){ //随机取图片，画100*100的图右上角没有填充 int s4 = random.nextInt(max); gs.drawImage(img4[s4], i * pix + pixoff, j * pix + pixoff, pix * 2, pix * 2, null); code[i][j + 1] = code[i + 1][j + 1] = false; } else if(j+1 < codeLength && code[i][j+1]){ //随机取图片，画50*100的图 int s3 = random.nextInt(max); gs.drawImage(img3[s3], i * pix + pixoff, j * pix + pixoff, pix, pix*2, null); code[i][j+1] = false; } else if (i+1 < codeLength && code[i+1][j]) { //随机取图片，画100*50的图 int s2 = random.nextInt(max); gs.drawImage(img2[s2], i * pix + pixoff, j * pix + pixoff, pix * 2, pix, null); code[i+1][j] = false; } else { //随机取图片，画50*50的图 int s1 = random.nextInt(max); gs.drawImage(img1[s1], i * pix + pixoff, j * pix + pixoff, pix, pix, null); } } } } } /** * 绘制算法1 普通二维码素材有50*50 50*100 50*150 * @param gs 画笔 * @param code 二维码数组 */ public static void drawQrcodeOrdi(Graphics2D gs,boolean[][] code){ //把图片素材放进数组 BufferedImage[] img1 = {image11,image12,image13}; BufferedImage[] img2 = {image21,image22,image23}; BufferedImage[] img3 = {image31,image32,image33}; //通用地绘制码眼 gs.drawImage(image_eye, pix, pix, pix*7, pix*7, null); gs.drawImage(image_eye, (codeLength-7)*pix+pixoff, pix, pix*7, pix*7, null); gs.drawImage(image_eye, pix, (codeLength-7)*pix+pixoff, pix*7, pix*7, null); Random random = new Random(); for(int i = 0;i < codeLength;i++){ for(int j = 0;j < codeLength;j++){ //1*3 if(code[i][j]){ if(i+2 < codeLength && code[i+1][j] && code[i+2][j]){ //随机取图片下标随机[0,2]，画50*150的图 int s3 = random.nextInt(max); gs.drawImage(img3[s3], j*25+pixoff, i*25+pixoff, 25, 75, null); code[i+2][j]=false; code[i+1][j]=false; }else if(i+1 < codeLength && code[i+1][j]){ //1*2 //随机取图片，画50*100的图 int s2 = random.nextInt(max); gs.drawImage(img2[s2], j*25+pixoff, i*25+pixoff, 25, 50, null); code[i+1][j]=false; } else { //随机取图片，画50*50的图 int s1 = random.nextInt(max); gs.drawImage(img1[s1], j*25+pixoff, i*25+pixoff, 25, 25, null); } } } } } }