前段时间没事突然看到有些宣传海报上面打印了带log的二维码，于是在网上查找了生成二维码的方法，自己进行了写修改，下面直接贴出代码供参考：

注：要引入QRCode.jar包

1、这是生成二维码的处理类：QRCodeEncoderHandler

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);  // 获得内容的字节数组，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，不设置可能导致解析出错  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//因为要在二维码下方附上文字，所以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，不然上面设置无效BitMatrix bitMatrix=null;try {bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, imgSize, imgSize, hints);} catch (WriterException e) {// TODO Auto-generated catch blocke.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 blocke.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//因为要在二维码下方附上文字，所以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，不然上面设置无效BitMatrix bitMatrix=null;try {bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, imgSize, imgSize, hints);} catch (WriterException e) {// TODO Auto-generated catch blocke.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 blocke.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//因为要在二维码下方附上文字，所以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，不然上面设置无效BitMatrix bitMatrix=null;try {bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, imgSize, imgSize, hints);} catch (WriterException e) {// TODO Auto-generated catch blocke.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 blocke.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logfileNamePath+=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 需要添加文字的图片* @param fontStyle 需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）/2int startX = (width-(fontSize*pressText.length()))/2;//y开始的位置：图片高度-（图片高度-图片宽度）/2int 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);}}
}

2、下面是测试类：

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());}}

3、下面是生成的二维码示例：