qrcode 生成二维码，带logo 带文字描述

qrcode 生成二维码

1.引入 pom.xml
2. ResourceRenderer
3. QRCodeUtil
4. QRCodeController
5. HTML
6. 测试

1.引入 pom.xml

整合了一下二维码的生成，并且带有文字提示可以加可以不加

     <!-- zxing 二维码生成依赖 --><!-- https://mvnrepository.com/artifact/com.google.zxing/core --><dependency><groupId>com.google.zxing</groupId><artifactId>core</artifactId><version>3.3.0</version></dependency><dependency><groupId>com.google.zxing</groupId><artifactId>javase</artifactId><version>3.1.0</version></dependency>

2. ResourceRenderer

这个类是处理一个后台访问静态文件夹的一个封装, 这个类访问静态文件可以保证就算打jar 包也可以访问的到。

import java.io.IOException;
import java.io.InputStream;import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.ResourceLoader;public class ResourceRenderer {public static InputStream resourceLoader(String fileFullPath) throws IOException {ResourceLoader resourceLoader = new DefaultResourceLoader();return resourceLoader.getResource(fileFullPath).getInputStream();}
}

3. QRCodeUtil

然后就是引入QRCode uitil 实现生成


import com.google.zxing.*;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;import javax.imageio.ImageIO;import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.ResourceLoader;
import org.springframework.util.ResourceUtils;import java.awt.*;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;
import java.util.Map;
import java.util.Random;/*** 二维码工具类 Created by fuli.shen on 2017/3/31.*/
public class QRCodeUtil {private static final String CHARSET = "utf-8";// 生成文件后缀private static final String FORMAT_NAME = "JPG";// 二维码尺寸private static final int QRCODE_SIZE = 210;// LOGO宽度private static final int WIDTH = 40;// LOGO高度private static final int HEIGHT = 40;/*** 生成二维码的方法** @param content      目标URL* @param imgPath      LOGO图片地址* @param needCompress 是否压缩LOGO* @return 二维码图片* @throws Exception*/public static BufferedImage createImage(String content, String imgPath, boolean needCompress) throws Exception {Hashtable hints = new Hashtable();hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);hints.put(EncodeHintType.CHARACTER_SET, CHARSET); hints.put(EncodeHintType.MARGIN, 4); // 外边距BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE,hints);int width = bitMatrix.getWidth();int height = bitMatrix.getHeight();// 重新定义一个BufferedImage 网图片上添加rgb颜色BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);for (int x = 0; x < width; x++) {for (int y = 0; y < height; y++) {// 添加黑白色image.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000 : 0xFFFFFFFF);}}if (imgPath == null || "".equals(imgPath)) {return image;}// 插入图片QRCodeUtil.insertImage(image, imgPath, needCompress);return image;}/*** 插入LOGO** @param source       二维码图片* @param imgPath      LOGO图片地址* @param needCompress 是否压缩* @throws Exception*/   private static void insertImage(BufferedImage source, String imgPath, boolean needCompress) throws Exception {/** File file = new File(imgPath); if (!file.exists()) { System.err.println("" +* imgPath + "   该文件不存在！"); return; }*///Image src = ImageIO.read(ResourceUtils.getFile(imgPath));Image src = ImageIO.read(ResourceRenderer.resourceLoader(imgPath));int width = src.getWidth(null);int height = src.getHeight(null);if (needCompress) { // 压缩LOGOif (width > WIDTH) {width = WIDTH;}if (height > HEIGHT) {height = HEIGHT;}Image image = src.getScaledInstance(width, height, Image.SCALE_SMOOTH);BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);// 用Graphics 在 BufferedImage 上指定位置绘制Graphics g = tag.getGraphics();g.drawImage(image, 0, 0, null); // 绘制缩小后的图g.dispose();src = image;}// 插入LOGOGraphics2D graph = source.createGraphics();int x = (QRCODE_SIZE - width) / 2;int y = (QRCODE_SIZE - height) / 2;graph.drawImage(src, x, y, width, height, null);Shape shape = new RoundRectangle2D.Float(x, y, width, width, 6, 6);graph.setStroke(new BasicStroke(3f));graph.draw(shape);graph.dispose();}/*** 生成二维码(内嵌LOGO)** @param content      内容* @param imgPath      LOGO地址* @param destPath     存放目录* @param needCompress 是否压缩LOGO* @throws Exception*/public static void encode(String content, String imgPath, String destPath, boolean needCompress) throws Exception {BufferedImage image = QRCodeUtil.createImage(content, imgPath, needCompress);mkdirs(destPath);String file = new Random().nextInt(99999999) + ".jpg";ImageIO.write(image, FORMAT_NAME, new File(destPath + "/" + file));}/*** 当文件夹不存在时，mkdirs会自动创建多层目录，区别于mkdir．(mkdir如果父目录不存在则会抛出异常)** @param destPath 存放目录*/public static void mkdirs(String destPath) {File file = new File(destPath);if (!file.exists() && !file.isDirectory()) {file.mkdirs();}}/*** 生成二维码(内嵌LOGO)** @param content  内容* @param imgPath  LOGO地址* @param destPath 存储地址* @throws Exception*/public static void encode(String content, String imgPath, String destPath) throws Exception {QRCodeUtil.encode(content, imgPath, destPath, false);}/*** 生成二维码** @param content      内容* @param destPath     存储地址* @param needCompress 是否压缩LOGO* @throws Exception*/public static void encode(String content, String destPath, boolean needCompress) throws Exception {QRCodeUtil.encode(content, null, destPath, needCompress);}/*** 生成二维码** @param content  内容* @param destPath 存储地址* @throws Exception*/public static void encode(String content, String destPath) throws Exception {QRCodeUtil.encode(content, null, destPath, false);}/*** 生成二维码(内嵌LOGO)** @param content      内容* @param imgPath      LOGO地址* @param output       输出流* @param needCompress 是否压缩LOGO* @throws Exception*/public static void encode(String content, String imgPath, OutputStream output, boolean needCompress)throws Exception {BufferedImage image = QRCodeUtil.createImage(content, imgPath, needCompress);ImageIO.write(image, FORMAT_NAME, output);}/*** 生成二维码** @param content 内容* @param output  输出流* @throws Exception*/public static void encode(String content, OutputStream output) throws Exception {QRCodeUtil.encode(content, null, output, false);}/*** 解析二维码** @param file 二维码图片* @return* @throws Exception*/public static String decode(File file) throws Exception {BufferedImage image;image = ImageIO.read(file);if (image == null) {return null;}BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(image);BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));Result result;Hashtable hints = new Hashtable();hints.put(DecodeHintType.CHARACTER_SET, CHARSET);result = new MultiFormatReader().decode(bitmap, hints);String resultStr = result.getText();return resultStr;}/*** 解析二维码** @param path 二维码图片地址* @return 不是二维码的内容返回null,是二维码直接返回识别的结果* @throws Exception*/public static String decode(String path) throws Exception {return QRCodeUtil.decode(new File(path));}/*** Java拼接多张图片* * @param imgs     图片地址集合* @param type     图片类型* @param dst_pic  //输出的文件：F:/test2.jpg* @param rowCount //一行几张* @return*/public static boolean merge(String[] imgs, String type, String dst_pic, int rowCount) {// 获取需要拼接的图片长度int len = imgs.length;// 判断长度是否大于0if (len < 1) {return false;}File[] src = new File[len];BufferedImage[] images = new BufferedImage[len];int[][] ImageArrays = new int[len][];for (int i = 0; i < len; i++) {try {src[i] = new File(imgs[i]);images[i] = ImageIO.read(src[i]);} catch (Exception e) {e.printStackTrace();return false;}int width = images[i].getWidth() + 2;int height = images[i].getHeight() + 2;// 从图片中读取RGB 像素ImageArrays[i] = new int[width * height];ImageArrays[i] = images[i].getRGB(0, 0, width, height, ImageArrays[i], 0, width);}int dst_height = images[0].getHeight();int dst_width = 0;// 合成图片像素for (int i = 0; i < images.length; i++) {if ((i + 1) % rowCount == 0 && i > 0 && (i + 1) != images.length) {dst_height += images[i].getHeight();}}dst_width = images.length > rowCount ? rowCount * images[0].getWidth() : images.length * images[0].getWidth();// 合成后的图片System.out.println("宽度:" + dst_width);System.out.println("高度:" + dst_height);if (dst_height < 1) {System.out.println("dst_height < 1");return false;}// 生成新图片try {int startX = 0;BufferedImage ImageNew = new BufferedImage(dst_width, dst_height, BufferedImage.TYPE_INT_RGB);dst_width = images[0].getWidth();int height_i = 0;for (int i = 0; i < images.length; i++) {ImageNew.setRGB(startX, height_i, dst_width, images[i].getHeight(), ImageArrays[i], 0, dst_width);// height_i += images[i].getHeight();if ((i + 1) % rowCount == 0 && i > 0) {height_i += images[i].getHeight();startX = 0;} else {startX += images[i].getWidth();}// System.out.println(startX+" "+height_i);}File outFile = new File(dst_pic);ImageIO.write(ImageNew, type, outFile);// 写图片 ，输出到硬盘} catch (Exception e) {e.printStackTrace();return false;}return true;}/*** Java拼接多张图片* * @param imgs     图片地址集合* @param type     图片类型* @param dst_pic  //输出的文件：F:/test2.jpg* @param rowCount //一行几张* @return*/public static boolean merge(BufferedImage[] imgs, String type, int rowCount, OutputStream outputStream) {// 获取需要拼接的图片长度int len = imgs.length;// 判断长度是否大于0if (len < 1) {return false;}BufferedImage[] images = imgs;int[][] ImageArrays = new int[len][];for (int i = 0; i < len; i++) {int width = images[i].getWidth();int height = images[i].getHeight();// 从图片中读取RGB 像素ImageArrays[i] = new int[width * height];ImageArrays[i] = images[i].getRGB(0, 0, width, height, ImageArrays[i], 0, width);}int dst_height = images[0].getHeight();int dst_width = 0;// 合成图片像素for (int i = 0; i < images.length; i++) {if ((i + 1) % rowCount == 0 && i > 0 && (i + 1) != images.length) {dst_height += images[i].getHeight();}}dst_width = images.length > rowCount ? rowCount * images[0].getWidth() : images.length * images[0].getWidth();// 合成后的图片System.out.println("宽度:" + dst_width);System.out.println("高度:" + dst_height);if (dst_height < 1) {System.out.println("dst_height < 1");return false;}// 生成新图片try {int startX = 0;BufferedImage ImageNew = new BufferedImage(dst_width, dst_height, BufferedImage.TYPE_INT_RGB);dst_width = images[0].getWidth();int height_i = 0;for (int i = 0; i < images.length; i++) {ImageNew.setRGB(startX, height_i, dst_width, images[i].getHeight(), ImageArrays[i], 0, dst_width);// height_i += images[i].getHeight();if ((i + 1) % rowCount == 0 && i > 0) {height_i += images[i].getHeight();startX = 0;} else {startX += images[i].getWidth();}}ImageIO.write(ImageNew, type, outputStream);// 写图片 ，输出到输出流} catch (Exception e) {e.printStackTrace();return false;}return true;}/*** Java拼接多张图片,不足的用空格补齐* * @param imgs     图片地址集合* @param type     图片类型* @param pageSize 一张有多少张* @param rowCount //一行几张* @return*/public static BufferedImage merge(List<BufferedImage> imgss, String type, int rowCount,int pageSize, OutputStream outputStream) {if(imgss.size() < pageSize) {// 如果要生成的图片不足pageSize 则用空白图片补齐for(int i = 0;i < pageSize - imgss.size();i++) {Color color = new Color(255, 255, 255);imgss.add(QRCodeUtil.forceFill(color.getRGB()));}}// 开始接图片BufferedImage[] imgs = new BufferedImage[imgss.size()];// 获取需要拼接的图片长度int len = imgs.length;// 判断长度是否大于0if (len < 1) {return null;}BufferedImage[] images = imgs;int[][] ImageArrays = new int[len][];for (int i = 0; i < len; i++) {int width = images[i].getWidth();int height = images[i].getHeight();// 从图片中读取RGB 像素ImageArrays[i] = new int[width * height];ImageArrays[i] = images[i].getRGB(0, 0, width, height, ImageArrays[i], 0, width);}int dst_height = images[0].getHeight();int dst_width = 0;// 合成图片像素for (int i = 0; i < images.length; i++) {if ((i + 1) % rowCount == 0 && i > 0 && (i + 1) != images.length) {dst_height += images[i].getHeight();}}dst_width = images.length > rowCount ? rowCount * images[0].getWidth() : images.length * images[0].getWidth();// 合成后的图片System.out.println("宽度:" + dst_width);System.out.println("高度:" + dst_height);if (dst_height < 1) {System.out.println("dst_height < 1");}// 生成新图片try {int startX = 0;BufferedImage ImageNew = new BufferedImage(dst_width, dst_height, BufferedImage.TYPE_INT_RGB);dst_width = images[0].getWidth();int height_i = 0;for (int i = 0; i < images.length; i++) {ImageNew.setRGB(startX, height_i, dst_width, images[i].getHeight(), ImageArrays[i], 0, dst_width);// height_i += images[i].getHeight();if ((i + 1) % rowCount == 0 && i > 0) {height_i += images[i].getHeight();startX = 0;} else {startX += images[i].getWidth();}}return ImageNew;} catch (Exception e) {e.printStackTrace();return null;}}/*** Java拼接多张图片* * @param imgs     图片地址集合* @param type     图片类型* @param dst_pic  //输出的文件：F:/test2.jpg* @param rowCount //一行几张* @return*/public static boolean merge(BufferedImage[] imgs, String type, String dst_pic, int rowCount) {// 获取需要拼接的图片长度int len = imgs.length;// 判断长度是否大于0if (len < 1) {return false;}BufferedImage[] images = imgs;int[][] ImageArrays = new int[len][];for (int i = 0; i < len; i++) {int width = images[i].getWidth();int height = images[i].getHeight();// 从图片中读取RGB 像素ImageArrays[i] = new int[width * height];ImageArrays[i] = images[i].getRGB(0, 0, width, height, ImageArrays[i], 0, width);}int dst_height = images[0].getHeight();int dst_width = 0;// 合成图片像素for (int i = 0; i < images.length; i++) {if ((i + 1) % rowCount == 0 && i > 0 && (i + 1) != images.length) {dst_height += images[i].getHeight();}}dst_width = images.length > rowCount ? rowCount * images[0].getWidth() : images.length * images[0].getWidth();// 合成后的图片System.out.println("宽度:" + dst_width);System.out.println("高度:" + dst_height);if (dst_height < 1) {System.out.println("dst_height < 1");return false;}// 生成新图片try {int startX = 0;BufferedImage ImageNew = new BufferedImage(dst_width, dst_height, BufferedImage.TYPE_INT_RGB);dst_width = images[0].getWidth();int height_i = 0;for (int i = 0; i < images.length; i++) {ImageNew.setRGB(startX, height_i, dst_width, images[i].getHeight(), ImageArrays[i], 0, dst_width);// height_i += images[i].getHeight();if ((i + 1) % rowCount == 0 && i > 0) {height_i += images[i].getHeight();startX = 0;} else {startX += images[i].getWidth();}// System.out.println(startX+" "+height_i);}File outFile = new File(dst_pic);ImageIO.write(ImageNew, type, outFile);// 写图片 ，输出到硬盘} catch (Exception e) {e.printStackTrace();return false;}return true;}/*** Java拼接多张图片* * @param imgs*            图片地址集合* @param type*            图片类型* @param dst_pic*            //输出的文件：F:/test2.jpg* @param rowCount*            //一行几张* @return*/public static InputStream merge(BufferedImage[] imgs, String type, int rowCount) {// 获取需要拼接的图片长度int len = imgs.length;// 判断长度是否大于0if (len < 1) {System.out.println("要拼接的长度为零!!!!!!!!!!!!!!!!");return null;}BufferedImage[] images = imgs;int[][] ImageArrays = new int[len][];for (int i = 0; i < len; i++) {int width = images[i].getWidth();int height = images[i].getHeight();// 从图片中读取RGB 像素ImageArrays[i] = new int[width * height];ImageArrays[i] = images[i].getRGB(0, 0, width, height,ImageArrays[i], 0, width);}int dst_height = images[0].getHeight();int dst_width = 0;// 合成图片像素for (int i = 0; i < images.length; i++) {if ((i + 1) % rowCount == 0 && i > 0 && (i + 1) != images.length) {dst_height += images[i].getHeight();}}dst_width = images.length > rowCount ? rowCount * images[0].getWidth(): images.length * images[0].getWidth();// 合成后的图片System.out.println("宽度:" + dst_width);System.out.println("高度:" + dst_height);if (dst_height < 1) {System.out.println("dst_height < 1");return null;}// 生成新图片try {int startX = 0;BufferedImage ImageNew = new BufferedImage(dst_width, dst_height,BufferedImage.TYPE_INT_RGB);dst_width = images[0].getWidth();int height_i = 0;for (int i = 0; i < images.length; i++) {ImageNew.setRGB(startX, height_i, dst_width,images[i].getHeight(), ImageArrays[i], 0, dst_width);// height_i += images[i].getHeight();if ((i + 1) % rowCount == 0 && i > 0) {height_i += images[i].getHeight();startX = 0;} else {startX += images[i].getWidth();}// System.out.println(startX+" "+height_i);}// File outFile = new File(dst_pic);ByteArrayOutputStream os = new ByteArrayOutputStream();ImageIO.write(ImageNew, "jpg", os);InputStream is = new ByteArrayInputStream(os.toByteArray());// ImageIO.write(ImageNew, type, outputStream);// 写图片 ，输出到zip输出流return is;} catch (Exception e) {e.printStackTrace();return null;}}/*** 给二维码下方附加说明文字* @param pressText 文字* @param image     需要添加文字的图片* @为图片添加文字*/public static void pressText(String pressText, BufferedImage image, int fontStyle, Color color, int fontSize) {//计算文字开始的位置//x开始的位置：（二维码-字体大小*字的个数）/2//int startX = (QRCODE_SIZE - (fontSize * pressText.length()))/3 - 28;int ci = (fontSize-2) * pressText.length();int startX = (QRCODE_SIZE-ci)/2;//y开始的位置：二维码高度 - 文字大小int startY = QRCODE_SIZE - fontSize;//y开始的位置：二维码高度 - 文字大小int startY = QRCODE_SIZE - fontSize;System.out.println("startX: " + startX);System.out.println("startY: " + startY);System.out.println("fontSize: " + fontSize);System.out.println("pressText.length(): " + pressText.length());try {// 创建一个 Graphics Graphics g = image.createGraphics();// 设置 Graphics 的绘制颜色g.setColor(color);// 设置字体g.setFont(new Font("微软雅黑", Font.PLAIN, fontSize));// 开始绘制g.drawString(pressText, startX, startY);// 保存g.dispose();System.out.println("添加的pressText 为：【"+pressText+"】");System.out.println("image press success");} catch (Exception e) {e.printStackTrace();System.out.println(e);}}/*** 生成一张纯色图片* @param rgb* @return*/public static BufferedImage forceFill( int rgb) {BufferedImage img = new BufferedImage(QRCODE_SIZE, QRCODE_SIZE, BufferedImage.TYPE_3BYTE_BGR);for(int x = 0; x < img.getWidth(); x++) {for(int y = 0; y < img.getHeight(); y++) {//img.setRGB(x, y, rgb);img.setRGB(x, y, rgb);}}return img;}public static void main(String[] args) throws Exception {// 生成二维码String text = "https://www.baidu.com/";// String imagePath = System.getProperty("user.dir") + "/data/1.jpg";String destPath = "C:\\Users\\admin\\Desktop\\";List<BufferedImage> bufferedImages = new ArrayList<BufferedImage>();for (int i = 0; i < 12; i++) {BufferedImage bufferedImage = QRCodeUtil.createImage("hello", "classpath:static/image/olt.obd_01.png",true);bufferedImages.add(bufferedImage);}// QRCodeUtil.encode(content, output);// 验证图片是否含有二维码/** String destPath1 = "C:\\Users\\admin\\Desktop\\3.jpg"; try { String result =* decode(destPath1); System.out.println(result); }catch (Exception e){* e.printStackTrace(); System.out.println(destPath1+"不是二维码"); }*/// 输入图片地址String[] imgs = { "C:\\Users\\admin\\Desktop\\2.jpg", "C:\\Users\\admin\\Desktop\\1.jpg","C:\\Users\\admin\\Desktop\\2.jpg", "C:\\Users\\admin\\Desktop\\1.jpg","C:\\Users\\admin\\Desktop\\2.jpg", "C:\\Users\\admin\\Desktop\\1.jpg","C:\\Users\\admin\\Desktop\\2.jpg", "C:\\Users\\admin\\Desktop\\1.jpg","C:\\Users\\admin\\Desktop\\2.jpg", "C:\\Users\\admin\\Desktop\\1.jpg","C:\\Users\\admin\\Desktop\\2.jpg", "C:\\Users\\admin\\Desktop\\1.jpg","C:\\Users\\admin\\Desktop\\2.jpg", "C:\\Users\\admin\\Desktop\\1.jpg","C:\\Users\\admin\\Desktop\\2.jpg" };BufferedImage[] bfs = new BufferedImage[bufferedImages.size()];// 调用方法生成图片merge(bufferedImages.toArray(bfs), "jpg", "C:\\Users\\admin\\Desktop\\test.jpg", 4);}
}

4. QRCodeController

然后就是控制类了，在这个类里面，我控制好了，多张生成的时候会自动补齐一个a4 规格的纸张也就是 4:6 的比例，刚好可以打印到A4 纸上。如果有需要可以修改我的生成代码,在controller 141 行。底下的ZipUtil 是一个zip 的压缩类，可以看看

import java.awt.Color;
import java.awt.Font;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletResponse;import org.springframework.core.io.ClassPathResource;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;import com.example.demo.util.QRCodeUtil;
import com.example.demo.util.ResourceRenderer;import org.springframework.util.StringUtils;@Controller
public class QRCodeController {private Integer fontSize = 16;private Integer pageSize = 24; // 每张图片的二维码个数private Integer line = 4; // 二维码每行的个数private String imgPath = "classpath:static/image/image.jpg";// 存放存取List 的键private String preeText = "preeText";private String content = "content";@RequestMapping(value= {"/","/index"})public String index() {return "index";}@RequestMapping("/hello")@ResponseBodypublic String helloWorld() throws IOException {return "helloWorld";}/*** 开始生成二维码* * @param response* @param content  二维码扫码出来的内容 ☆只在单个二维码生成中有效* @param num      生成二维码的数量* @param preeText 二维码上面的文字 ☆只在单个二维码生成中有效* @throws Exception*/@RequestMapping("/qrcode")public void qrcode(HttpServletResponse response, String text) throws Exception {response.setContentType("text/html;charset=UTF-8");response.setContentType("application/x-octet-stream");// response.setHeader("Content-Disposition", "attachment;filename="+// System.currentTimeMillis() + ".zip");// 下载文件的名称response.setHeader("Content-Disposition", "attachment;");// 开始解析数字List<Map<String,String>> list = new ArrayList<>();if(StringUtils.isEmpty(text)) {System.out.println("请输入要生成的二维码");return;}String[] contents = text.split("\n");for(String str :contents) {int index = str.indexOf(",");if(index == -1) {list.add(new HashMap<String, String>(){{System.out.println(str);put(content, str);put(preeText, "");}});}else {list.add(new HashMap<String, String>(){{System.out.println(str);put(content, str.substring(0,index));put(preeText, str.substring(index+1));}});}}Integer num = list.size();if (num != null && num == 1) {// 生成单个二维码response.setHeader("Content-Disposition", "attachment;filename=a.jpg");Map<String,String> aaa = list.get(0);BufferedImage bufferedImage = makeQRCodeImg(aaa.get(preeText), aaa.get(this.content));// 把图片输出出去ImageIO.write(bufferedImage, "jpg", response.getOutputStream());} else if (num != null && num > 1) {// 生成批量的时候response.setHeader("Content-Disposition", "attachment;filename=a.zip");downMoreImg(response, list);} else {System.out.println("请指定正确的二维码数量");}}/*** 生成压缩包图片* @param response* @param list* @throws Exception*/@SuppressWarnings("unused")private void downMoreImg(HttpServletResponse response,List<Map<String,String>> list) throws Exception {// 创建一个压缩包ZipOutputStream zip = new ZipOutputStream(response.getOutputStream());Integer count = list.size();Integer big = count % pageSize; // 最后一页的个数Integer page = big == 0 ? count / pageSize : (count / pageSize) + 1; // 总页数// 图片名 +   图片流Map<String, InputStream> imgs = new HashMap<String, InputStream>();for (int i = 0; i < page; i++) {// 开始生成图片 i 表示的是当前页//起始行下标  等于  当前页减去1  乘以 每页个数  也就是说    i*pageSizeInteger begin = i*pageSize,end = begin+pageSize;if(end > count) end = count; // 防止下标越界imgs.put("第("+(i+1)+")页",makeImages( list.subList(begin, end)));System.out.println("第("+(i+1)+") 页生成成功");}ZipUtil.zipPut(zip, imgs, "jpg");// 保存缓存 response.flushBuffer();}/*** 生成一张二维码 * @param content* @return* @throws Exception */private InputStream makeImages(List<Map<String,String>> content) throws Exception {int size = content.size();List<BufferedImage> bufferedImages = new ArrayList<BufferedImage>();System.out.println("当前拼接二维码的个数为：" + size);for(int i = 0; i < pageSize; i++) {if(i >= size)bufferedImages.add(makeWhiteImg());else {// 生成二维码图片BufferedImage img = makeQRCodeImg(content.get(i).get(preeText), content.get(i).get(this.content));bufferedImages.add(img);}}BufferedImage[] images = new BufferedImage[size];InputStream img = QRCodeUtil.merge(bufferedImages.toArray(images), "jpg", line);return img;}/*** 纯色图片* @return*/private BufferedImage makeWhiteImg() {Color color = new Color(255, 255, 255);// System.out.println(color.getRGB());return QRCodeUtil.forceFill(color.getRGB());}/*** 生成单个二维码* @param preeText* @param content* @return* @throws Exception*/@SuppressWarnings("unused")private BufferedImage makeQRCodeImg(String preeText,String content) throws Exception {BufferedImage bufferedImage = QRCodeUtil.createImage(content, imgPath, true);// 给图片添加文字QRCodeUtil.pressText(preeText, bufferedImage, Font.BOLD, Color.black, fontSize);return bufferedImage;}
}
class ZipUtil {/*** 打包* @param out* @param fil* @param suffix* @return* @throws IOException*/public static ZipOutputStream zipPut(ZipOutputStream out,Map<String,InputStream> fil,String suffix) throws IOException{for(String name : fil.keySet()){out.putNextEntry(new ZipEntry(name+"."+suffix));byte[] buffer = new byte[1024];     int r = 0;     while ((r = fil.get(name).read(buffer)) != -1) {     out.write(buffer, 0, r);     }     fil.get(name).close();   }out.flush();     out.close();return out;}
}

5. HTML

我写了一个html 测试使用他

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<style>*{margin:0px auto;}form{margin-left:25%;margin-top:10%;}
</style>
<body><form action="/qrcode" method="post"><p>多个二维码请换行，提示于生成二维码的内容中间要用，隔开</p><textarea rows="10" cols="100" name = "text"></textarea><br /><input type="submit" value="提交"></form>
</body>

6. 测试

我输入了百度的网址，然后用英文的 , 隔开，就出来了这样的二维码

这样就可以生成多个并且打包一个了，

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