前段时间没事忽然看到有些宣传海报上面打印了带log的二维码,因而在网上查找了生成二维码的方法,本身进行了写修改,下面直接贴出代码供参考:java
注:要引入QRCode.jar包数组
一、这是生成二维码的处理类:QRCodeEncoderHandler测试
package com.czp.commonutil; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.HashMap; import java.util.Map; import javax.imageio.ImageIO; import com.czp.QRCode.pro.TwoDimensionCodeImage; import com.czp.logQRcode.LogoConfig; import com.czp.logQRcode.MatrixToImageWriter; import com.czp.util.CommonUtil; import com.google.zxing.BarcodeFormat; import com.google.zxing.EncodeHintType; import com.google.zxing.MultiFormatWriter; import com.google.zxing.WriterException; import com.google.zxing.common.BitMatrix; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; import com.sun.image.codec.jpeg.JPEGCodec; import com.sun.image.codec.jpeg.JPEGImageEncoder; import com.swetake.util.Qrcode; import jp.sourceforge.qrcode.QRCodeDecoder; import jp.sourceforge.qrcode.exception.DecodingFailedException; public class QRCodeEncoderHandler { /** * 生成二维码(QRCode)图片的公共方法 * @param content 存储内容 * @param imgType 图片类型 * @param size 二维码尺寸 * @param addLog 是否添加log * @param addText 添加的文字 * @return */ @SuppressWarnings("unchecked") public synchronized static String qRCodeCommon(String content, String imgType, int size,Boolean addLog,String addText) { final String uploadRootDir="D:/temp/";//临时文件夹 final String uploadPathImg="D:/imgfile";//存储文件夹 final String path = "E:/QRCodeImage";//存放logo的文件夹 String fileDate = new SimpleDateFormat("yyyyMMdd").format(new Date()); String name=CommonUtil.getSysFormatTime("yyyyMMddHHmmssSSS").toString();//图片名称 final String uploadPath =uploadPathImg+ "/"+fileDate+"/";//+priBankCode+"/" BufferedImage bufImg = null; String fileNamePath=uploadPath+"";//返回生成二维码路径、名称 int imgSize=1; //size = 2; try { Qrcode qrcodeHandler = new Qrcode(); // 设置二维码排错率,可选L(7%)、M(15%)、Q(25%)、H(30%),排错率越高可存储的信息越少,但对二维码清晰度的要求越小 qrcodeHandler.setQrcodeErrorCorrect('M'); qrcodeHandler.setQrcodeEncodeMode('B'); // 设置设置二维码尺寸,取值范围1-40,值越大尺寸越大,可存储的信息越大 qrcodeHandler.setQrcodeVersion(size); // 得到内容的字节数组,设置编码格式 byte[] contentBytes = content.getBytes("utf-8"); // 图片尺寸 imgSize = 67 + 12 * size; System.out.println("imgSize:"+imgSize); bufImg = new BufferedImage(imgSize, imgSize, BufferedImage.TYPE_INT_RGB); Graphics2D gs = bufImg.createGraphics(); // 设置背景颜色 gs.setBackground(Color.WHITE); gs.clearRect(0, 0, imgSize, imgSize); // 设定图像颜色> BLACK gs.setColor(Color.BLACK); // 设置偏移量,不设置可能致使解析出错 int pixoff = 2; // 输出内容> 二维码 if (contentBytes.length > 0 && contentBytes.length < 200) { boolean[][] codeOut = qrcodeHandler.calQrcode(contentBytes); for (int i = 0; i < codeOut.length; i++) { for (int j = 0; j < codeOut.length; j++) { if (codeOut[j][i]) { gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3); } } } } else { System.out.println("QRCode content bytes length = " + contentBytes.length + " not in [0, 800]."); throw new Exception("QRCode content bytes length = " + contentBytes.length + " not in [0, 800]."); } gs.dispose(); bufImg.flush(); } catch (Exception e) { e.printStackTrace(); } File uploadDir = new File(uploadPath); if(!uploadDir.exists()){ uploadDir.mkdirs(); } if(addLog && ""!=addText ) {//当要同时写入log和文字 //storageQRCodeIMG(bufImg,uploadRootDir,name+"_Temp.PNG");//将生成二维码图片存入临时文件夹 MultiFormatWriter multiFormatWriter = new MultiFormatWriter(); @SuppressWarnings("rawtypes") Map hints = new HashMap(); hints.put(EncodeHintType.CHARACTER_SET, "UTF-8"); //设置UTF-8, 防止中文乱码 hints.put(EncodeHintType.MARGIN,1); //设置二维码四周白色区域的大小 hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); //设置二维码的容错性 //width:图片完整的宽;height:图片完整的高 //由于要在二维码下方附上文字,因此把图片设置为长方形(高大于宽) // int width = 400; // int height = 450; //画二维码,记得调用multiFormatWriter.encode()时最后要带上hints参数,否则上面设置无效 BitMatrix bitMatrix=null; try { bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, imgSize, imgSize, hints); } catch (WriterException e) { // TODO Auto-generated catch block e.printStackTrace(); } //qrcFile用来存放生成的二维码图片(无logo,无文字) File qrcFile = new File(uploadRootDir,name+"_Temp.PNG"); //logoFile用来存放带有logo的图片 File logoFile = new File(path,"QQ.PNG");//log图片 //开始画二维码 try { MatrixToImageWriter.writeToFile(bitMatrix, "PNG", qrcFile); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } //在二维码中加入图片 LogoConfig logoConfig = new LogoConfig(); //LogoConfig中设置Logo的属性 addLogo_QRCode(qrcFile, logoFile, logoConfig,uploadRootDir,name+"_imageWithLogTemp.PNG");//向生成的二维码图片加入log,并写入临时文件夹 //用来存放带有logo+文字的二维码图片的路径 String withLogAndTextName =name+ "_imageWithText.PNG"; //带有logo的二维码图片 String targetImage = uploadRootDir+name+"_imageWithLogTemp.PNG"; pressText(addText,targetImage, 1,Color.BLUE, 10, imgSize, imgSize, uploadPath,withLogAndTextName); fileNamePath+=withLogAndTextName; // new File(uploadRootDir+name).delete();//删除原先的图片 }else if(!addLog && ""!=addText) {//只添加文字时 //storageQRCodeIMG(bufImg,uploadRootDir,name+"_Temp.PNG");//将生成二维码图片存入临时文件夹 MultiFormatWriter multiFormatWriter = new MultiFormatWriter(); @SuppressWarnings("rawtypes") Map hints = new HashMap(); hints.put(EncodeHintType.CHARACTER_SET, "UTF-8"); //设置UTF-8, 防止中文乱码 hints.put(EncodeHintType.MARGIN,1); //设置二维码四周白色区域的大小 hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); //设置二维码的容错性 //width:图片完整的宽;height:图片完整的高 //由于要在二维码下方附上文字,因此把图片设置为长方形(高大于宽) //int width = 400; // int height = 450; //画二维码,记得调用multiFormatWriter.encode()时最后要带上hints参数,否则上面设置无效 BitMatrix bitMatrix=null; try { bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, imgSize, imgSize, hints); } catch (WriterException e) { // TODO Auto-generated catch block e.printStackTrace(); } //qrcFile用来存放生成的二维码图片(无logo,无文字) File qrcFile = new File(uploadRootDir,name+"_Temp.PNG"); //开始画二维码 try { MatrixToImageWriter.writeToFile(bitMatrix, "PNG", qrcFile); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } //用来存放带有logo+文字的二维码图片的路径 String withTextName =name+ "_withText.PNG"; //生成的二维码图片 String targetImage = uploadRootDir+name+"_Temp.PNG"; pressText(addText,targetImage, 1,Color.BLUE, 18, imgSize, imgSize, uploadPath,withTextName); fileNamePath+=withTextName; }else if(addLog && ""==addText){//只添加log图片 //storageQRCodeIMG(bufImg,uploadRootDir,name+"_Temp.PNG");//将生成二维码图片存入临时文件夹 MultiFormatWriter multiFormatWriter = new MultiFormatWriter(); @SuppressWarnings("rawtypes") Map hints = new HashMap(); hints.put(EncodeHintType.CHARACTER_SET, "UTF-8"); //设置UTF-8, 防止中文乱码 hints.put(EncodeHintType.MARGIN,1); //设置二维码四周白色区域的大小 hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); //设置二维码的容错性 //width:图片完整的宽;height:图片完整的高 //由于要在二维码下方附上文字,因此把图片设置为长方形(高大于宽) //int width = 400; // int height = 450; //画二维码,记得调用multiFormatWriter.encode()时最后要带上hints参数,否则上面设置无效 BitMatrix bitMatrix=null; try { bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, imgSize, imgSize, hints); } catch (WriterException e) { // TODO Auto-generated catch block e.printStackTrace(); } //qrcFile用来存放生成的二维码图片(无logo,无文字) File qrcFile = new File(uploadRootDir,name+"_Temp.PNG"); //logoFile用来存放带有logo的图片 File logoFile = new File(path,"QQ.PNG");//log图片 //开始画二维码 try { MatrixToImageWriter.writeToFile(bitMatrix, "PNG", qrcFile); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } //用来存放生成二维码的路径 String WithLogName =name+"_imageWithLog.PNG"; //在二维码中加入图片 LogoConfig logoConfig = new LogoConfig(); //LogoConfig中设置Logo的属性 addLogo_QRCode(qrcFile, logoFile, logoConfig,uploadPath,WithLogName);//向生成的二维码图片加入log fileNamePath+=WithLogName; }else if(!addLog && ""==addText) {//只生成二维码 storageQRCodeIMG(bufImg,uploadPath,name+".PNG");//将生成二维码图片存入文件夹 fileNamePath+=name+".PNG"; } return fileNamePath; } /** * 存储二维码至指定路径(storageQRCodeIMG) * @param bufImg 图片 * @param path 图片路径 * @param name 图片名称 */ public static void storageQRCodeIMG(BufferedImage bufImg,String path,String name) { if(".PNG".lastIndexOf(name)!=-1 || ".png".lastIndexOf(name)!=-1) { name=name+".PNG"; } File imgFile = new File(path+name); // 生成二维码QRCode图片 try { ImageIO.write(bufImg, "PNG", imgFile); } catch (IOException e) { e.printStackTrace(); } } /** * 解析二维码(QRCode) * @param imgPath 图片路径 * @return */ public String decoderQRCode(String imgPath) { // QRCode 二维码图片的文件 File imageFile = new File(imgPath); BufferedImage bufImg = null; String content = null; try { bufImg = ImageIO.read(imageFile); QRCodeDecoder decoder = new QRCodeDecoder(); content = new String(decoder.decode(new TwoDimensionCodeImage(bufImg)), "utf-8"); } catch (IOException e) { System.out.println("Error: " + e.getMessage()); e.printStackTrace(); } catch (DecodingFailedException dfe) { System.out.println("Error: " + dfe.getMessage()); dfe.printStackTrace(); } return content; } /** * 给二维码图片添加Logo * * @param qrPic 要添加log的二维码 * @param logoPic log图片 *@param logoConfig log参数 *@param newImgPath 新生成图片存储路径 *@param newImgName 新生成图片名称 */ public static void addLogo_QRCode(File qrPic, File logoPic, LogoConfig logoConfig,String newImgPath,String newImgName) { try { if (!qrPic.isFile() || !logoPic.isFile()) { System.out.print("file not find !"); System.exit(0); } /** * 读取二维码图片,并构建绘图对象 */ BufferedImage image = ImageIO.read(qrPic); Graphics2D g = image.createGraphics(); /** * 读取Logo图片 */ BufferedImage logo = ImageIO.read(logoPic); int widthLogo = image.getWidth()/logoConfig.getLogoPart(); // int heightLogo = image.getHeight()/logoConfig.getLogoPart(); int heightLogo = image.getWidth()/logoConfig.getLogoPart(); //保持二维码是正方形的 // 计算图片放置位置 int x = (image.getWidth() - widthLogo) / 2; int y = (image.getHeight() - heightLogo) / 2 ; //开始绘制图片 g.drawImage(logo, x, y, widthLogo, heightLogo, null); g.drawRoundRect(x, y, widthLogo, heightLogo, 10, 10); g.setStroke(new BasicStroke(logoConfig.getBorder())); g.setColor(logoConfig.getBorderColor()); g.drawRect(x, y, widthLogo, heightLogo); g.dispose(); image.flush(); //将加入log的图片写入指定路径 storageQRCodeIMG(image,newImgPath,newImgName); // ImageIO.write(image, "PNG", new File("D:/newPic.PNG")); } catch (Exception e) { e.printStackTrace(); } } /** * @为图片添加文字 * @param pressText 文字 * @param targetImg 须要添加文字的图片 * @param fontStyle 须要添加文字的字体风格 * @param color 字体颜色 * @param fontSize 字体大小 * @param width 生成图片宽度 * @param heigh 生成图片高度 * @param newImgPath 新生成的图片存储路径 * @param newImgName 新生成的图片名称 */ public static void pressText(String pressText,String targetImg, int fontStyle, Color color, int fontSize, int width, int height,String newImgPath ,String newImgName) { //设置一个默认长度和宽度 // width = 400; // height = 450; //计算文字开始的位置 //x开始的位置:(图片宽度-字体大小*字的个数)/2 int startX = (width-(fontSize*pressText.length()))/2; //y开始的位置:图片高度-(图片高度-图片宽度)/2 int startY = height-(height-width)/2-5; try { File file = new File(targetImg); Image src = ImageIO.read(file); int imageW = src.getWidth(null); int imageH = src.getHeight(null); BufferedImage image = new BufferedImage(imageW, imageH, BufferedImage.TYPE_INT_RGB); Graphics g = image.createGraphics(); g.drawImage(src, 0, 0, imageW, imageH, null); g.setColor(color); g.setFont(new Font(null, fontStyle, fontSize)); g.drawString(pressText, startX, startY); g.dispose(); image.flush(); //将加入文字的图片写入指定路径 storageQRCodeIMG(image,newImgPath,newImgName); /*FileOutputStream out = new FileOutputStream(newImg); ImageIO.write(image, "PNG", out); JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out); encoder.encode(image); out.close();*/ System.out.println("image press success"); } catch (Exception e) { System.out.println(e); } } }
二、下面是测试类:字体
package com.czp.QRCodeTest; import com.czp.commonutil.QRCodeEncoderHandler; public class testQRCode { public static void main(String[] args) { /*File fileDir = new File("D:/imgfile/"); fileDir.mkdirs(); */ QRCodeEncoderHandler qr=new QRCodeEncoderHandler(); //BufferedImage BIM=qr.qRCodeCommon("xx很帅!哈哈。。。","PNG",5,true,""); //TwoDimensionCode TDC=new TwoDimensionCode(); //String pathName1=qr.qRCodeCommon("xx很帅!哈哈。。。","PNG",5,false,"");//只生成带二维码 //String pathName2=qr.qRCodeCommon("xx很帅!哈哈。。。","PNG",5,true,"");//只生成带log的 String pathName3=qr.qRCodeCommon("408120","PNG",18,true,"仙女专用");//只生成带log和文字的 //String pathName4=qr.qRCodeCommon("xx很帅!哈哈。。。","PNG",5,false,"123测试");//只生成带文字的 //System.out.println("pathName1:"+pathName1); //System.out.println("pathName2:"+pathName2); System.out.println("pathName3:"+pathName3); //System.out.println("pathName4:"+pathName4); //System.out.println("二维码信息:"+TDC.decoderQRCode("D:/imgfile/20171110172958.png"));//进行二维码信息的解析 //System.out.println(BIM.toString()); } }
三、下面是生成的二维码示例:google