长沙市天心区建设局网站,智联招聘网最新招聘官网下载,进度圈wordpress,易企秀h5长页面制作前言#xff1a;在日常的开发工作当中可能需要实现一个二维码小功能#xff0c;我参考了网上很多关于SpringBoot生成二维码的教程#xff0c;最终还是自己封装了一套完整生成二维码的工具类#xff0c;可以支持基础的黑白二维码、带颜色的二维码、带Logo的二维码、带颜色和… 前言在日常的开发工作当中可能需要实现一个二维码小功能我参考了网上很多关于SpringBoot生成二维码的教程最终还是自己封装了一套完整生成二维码的工具类可以支持基础的黑白二维码、带颜色的二维码、带Logo的二维码、带颜色和Logo的二维码和解析二维码五大功能还可以生成具体的二维码文件或返回Base64都是博主自己手写封装好的这边免费开源给大家一键使用只求大家一个免费的三连支持 目录 一、问题记录 二、导入pom依赖 三、QRCodeUtil工具类完整代码 四、使用示例 五、Gitee源码 六、总结 一、问题记录 这边我使用的是zxing提供的jar包生成的二维码不过有1个问题博客目前暂时未解决如果有解决的方法希望可以在评论区交流一下问题如下 二维码的内容如果设置为中文会报com.google.zxing.NotFoundException的错误这个问题博主搜索了网上很多的信息也没有找到具体的解决方案。 二、导入pom依赖 dependenciesdependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-web/artifactId/dependency!-- 二维码生成器依赖 --dependencygroupIdcom.google.zxing/groupIdartifactIdcore/artifactIdversion3.3.0/version/dependencydependencygroupIdcom.google.zxing/groupIdartifactIdjavase/artifactIdversion3.3.0/version/dependency!-- 常用工具类 --dependencygroupIdorg.apache.commons/groupIdartifactIdcommons-lang3/artifactId/dependencydependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-test/artifactIdscopetest/scope/dependency/dependencies 三、QRCodeUtil工具类完整代码 package com.example.ewm.utils;import java.awt.BasicStroke; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.Shape; import java.awt.geom.RoundRectangle2D; import java.awt.image.BufferedImage; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.IOException; import java.io.OutputStream; import java.util.HashMap; import java.util.Hashtable; import java.util.Random; import javax.imageio.ImageIO;import com.google.zxing.*; import com.google.zxing.client.j2se.BufferedImageLuminanceSource; import com.google.zxing.client.j2se.MatrixToImageWriter; import com.google.zxing.common.BitMatrix; import com.google.zxing.common.HybridBinarizer; import com.google.zxing.qrcode.QRCodeWriter; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; import com.sun.org.apache.xerces.internal.impl.dv.util.Base64; import org.apache.commons.lang3.StringUtils; import org.springframework.stereotype.Component;/*** author HTT*/ Component public class QRCodeUtil {/*** 编码格式*/private static final String CHARSET utf-8;/*** 二维码后缀名*/private static final String FORMAT_NAME JPG;/*** 二维码尺寸*/private static final int QRCODE_SIZE 300;/*** 插入图宽度*/private static final int WIDTH 60;/*** 插入图高度*/private static final int HEIGHT 60;/*** 插入图片* param source 文件流* param imgPath 图片路径* param needCompress 是否压缩图片* throws Exception*/private void insertImage(BufferedImage source, String imgPath, boolean needCompress) throws Exception {File file new File(imgPath);if (!file.exists()) {throw new Exception(imgPath图片文件不存在);}Image src ImageIO.read(new File(imgPath));int width src.getWidth(null);int height src.getHeight(null);// 压缩LOGOif (needCompress) {if (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);Graphics g tag.getGraphics();// 绘制缩小后的图g.drawImage(image, 0, 0, null);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();}/*** 创建带图片的二维码核心方法如果图片路径为空不会生成图片* param content 二维码内容* param imgPath 图片路径* param needCompress 是否压缩图片* return* throws Exception*/private BufferedImage createEwm(String content, String imgPath, boolean needCompress) throws Exception {Hashtable hints new Hashtable(16);hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);hints.put(EncodeHintType.CHARACTER_SET, CHARSET);hints.put(EncodeHintType.MARGIN, 1);BitMatrix bitMatrix new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE,hints);int width bitMatrix.getWidth();int height bitMatrix.getHeight();BufferedImage image new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);for (int x 0; x width; x) {for (int y 0; y height; y) {image.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000 : 0xFFFFFFFF);}}if (StringUtils.isEmpty(imgPath)) {return image;}// 插入图片insertImage(image, imgPath, needCompress);return image;}/*** 创建自定义颜色和图片的二维码核心方法如果图片路径为空不会生成图片* param content 二维码内容* param imgPath 图片路径* param needCompress 是否压缩图片* param frontColor 前景色* param backgroundColor 背景色* return* throws Exception*/private BufferedImage createEwm(String content, String imgPath, boolean needCompress,int frontColor,int backgroundColor) throws Exception {Hashtable hints new Hashtable(16);hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);hints.put(EncodeHintType.CHARACTER_SET, CHARSET);hints.put(EncodeHintType.MARGIN, 1);BitMatrix bitMatrix new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE,hints);int width bitMatrix.getWidth();int height bitMatrix.getHeight();BufferedImage image new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);for (int x 0; x width; x) {for (int y 0; y height; y) {image.setRGB(x, y, bitMatrix.get(x, y) ? frontColor : backgroundColor);}}if (StringUtils.isEmpty(imgPath)) {return image;}// 插入图片insertImage(image, imgPath, needCompress);return image;}/*** 生成带图片的二维码保存为文件如果图片路径为空不会生成图片* param content 二维码内容* param imgPath 图片路径* param destPath 存放路径* param needCompress 是否压缩图片* throws Exception*/private void generate(String content, String imgPath, String destPath, boolean needCompress) throws Exception {BufferedImage image createEwm(content, imgPath, needCompress);mkdirs(destPath);ImageIO.write(image, FORMAT_NAME, new File(destPath));}/*** 创建自定义颜色和图片的二维码保存为文件如果图片路径为空不会生成图片* param content 二维码内容* param imgPath 图片路径路径为空则只生成基础的二维码* param destPath 存放路径* param needCompress 是否压缩图片* param frontColor 前景色* param backgroundColor 背景色* 例举一些16进制的颜色代码* 0x000000 黑* 0xff0000 亮红* 0x00ff00 亮绿* 0xffff00 亮黄* 0x0000ff 亮蓝* 0xff00ff 亮紫* 0x00ffff 亮浅蓝* 0xffffff 白* 0xc6c6c6 亮灰* 0x848484 暗灰* throws Exception*/private void generate(String content, String imgPath, String destPath, boolean needCompress,int frontColor,int backgroundColor) throws Exception {BufferedImage image createEwm(content, imgPath, needCompress,frontColor,backgroundColor);mkdirs(destPath);ImageIO.write(image, FORMAT_NAME, new File(destPath));}/*** 生成带有图片的二维码并返回Base64如果图片路径为空不会生成图片* param content 二维码内容* param imgPath 图片路径* param needCompress 是否压缩图片* return* throws Exception*/private String generateBase64(String content, String imgPath, boolean needCompress) throws Exception {if (!StringUtils.isEmpty(content)) {HashMapEncodeHintType, Comparable hints new HashMap();hints.put(EncodeHintType.CHARACTER_SET, utf-8);hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);hints.put(EncodeHintType.MARGIN, 0);BufferedImage bufferedImage createEwm(content, imgPath, needCompress);ByteArrayOutputStream os new ByteArrayOutputStream();ImageIO.write(bufferedImage, FORMAT_NAME, os);String base64 Base64.encode(os.toByteArray());os.flush();os.close();return data:image/png;base64, base64;}return ;}/*** 生成带有自定义颜色和图片的二维码并返回Base64如果图片路径为空不会生成图片* param content 二维码内容* param imgPath 图片路径* param needCompress 是否压缩图片* param frontColor 前景色* param backgroundColor 背景色* return* throws Exception*/private String generateBase64(String content, String imgPath, boolean needCompress,int frontColor,int backgroundColor) throws Exception {if (!StringUtils.isEmpty(content)) {HashMapEncodeHintType, Comparable hints new HashMap();hints.put(EncodeHintType.CHARACTER_SET, utf-8);hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);hints.put(EncodeHintType.MARGIN, 0);BufferedImage bufferedImage createEwm(content, imgPath, needCompress,frontColor,backgroundColor);ByteArrayOutputStream os new ByteArrayOutputStream();ImageIO.write(bufferedImage, FORMAT_NAME, os);String base64 Base64.encode(os.toByteArray());os.flush();os.close();return data:image/png;base64, base64;}return ;}/*** 创建多级目录* param destPath*/private void mkdirs(String destPath) {File file new File(destPath);if (!file.exists() !file.isDirectory()) {file.mkdirs();}}/*** 根据文件解析二维码* param file* return* throws Exception*/private String analysis(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));HashMap hints new HashMapDecodeHintType, Object();hints.put(DecodeHintType.CHARACTER_SET, CHARSET);Result result new MultiFormatReader().decode(bitmap, hints);String resultStr result.getText();return resultStr;}/*******************************************************以下是创建二维码提供的方法封装*******************************************************//******************************另存为文件版本******************************//*** 创建基础的二维码* param content 二维码内容* param destPath 存放路径* throws Exception*/public void create(String content, String destPath) throws Exception {generate(content, null, destPath, false);}/*** 创建带颜色基础的二维码* param content 二维码内容* param destPath 存放路径* throws Exception*/public void create(String content, String destPath,int frontColor,int backgroundColor) throws Exception {generate(content, null, destPath, false,frontColor,backgroundColor);}/*** 创建带图片的二维码* param content 二维码内容* param imgPath 图片路径* param destPath 存放路径* param needCompress 是否压缩图片* throws Exception*/public void create(String content, String imgPath, String destPath,boolean needCompress) throws Exception {generate(content, imgPath, destPath, needCompress);}/*** 创建带有自定义颜色和图片的二维码* param content 二维码内容* param imgPath 图片路径* param destPath 存放路径* param needCompress 是否压缩图片* param frontColor 前景色* param backgroundColor 背景色* throws Exception*/public void create(String content, String imgPath, String destPath,boolean needCompress,int frontColor,int backgroundColor) throws Exception {generate(content, imgPath, destPath, needCompress,frontColor,backgroundColor);}/******************************另存为文件版本******************************//******************************Base64版本******************************//*** 创建基础的二维码并返回Base64* param content* throws Exception*/public String create(String content) throws Exception {return generateBase64(content,null,false);}/*** 创建带颜色基础的二维码并返回Base64* param content* throws Exception*/public String create(String content,int frontColor,int backgroundColor) throws Exception {return generateBase64(content,null,false,frontColor,backgroundColor);}/*** 创建带图片的二维码并返回Base64* param content 二维码内容* param imgPath 图片路径* param needCompress 是否压缩图片* throws Exception*/public String create(String content, String imgPath,boolean needCompress) throws Exception {return generateBase64(content, imgPath, needCompress);}/*** 创建带有自定义颜色和图片的二维码并返回Base64* param content 二维码内容* param imgPath 图片路径* param needCompress 是否压缩图片* param frontColor 前景色* param backgroundColor 背景色* throws Exception*/public String create(String content, String imgPath,boolean needCompress,int frontColor,int backgroundColor) throws Exception {return generateBase64(content, imgPath, needCompress,frontColor,backgroundColor);}/******************************Base64版本******************************//*** 根据文件路径解析二维码* param path 文件路径* return* throws Exception*/public String decode(String path) throws Exception {File file new File(path);if(!file.exists()){throw new Exception(文件不存在);}return analysis(file);}} 四、使用示例 友情提醒代码中的布尔值是代表Logo图片是否需要被压缩如果是true说明嵌入的Logo图片需要被压缩我的建议是默认为true因为如果不压缩在使用decode解析带Logo的二维码的时候会报com.google.zxing.NotFoundException的错误博主亲自测试过。 单元测试 SpringBootTest class EwmApplicationTests {Resourceprivate QRCodeUtil qrCodeUtil;Testvoid contextLoads() throws Exception {qrCodeUtil.create(httstudy,F:\\基础二维码.jpg);qrCodeUtil.create(httstudy,F:\\带颜色的二维码.jpg,0xff0000,0xffff00);qrCodeUtil.create(httstudy,F:\\Logo.png,F:\\带logo的二维码.jpg,true);qrCodeUtil.create(httstudy,F:\\Logo.png,F:\\带颜色和logo的二维码.jpg,true,0xff0000,0xffff00);String str qrCodeUtil.create(httstudy);String str2 qrCodeUtil.create(httstudy,0xff0000,0xffff00);String str3 qrCodeUtil.create(httstudy,F:\\Logo.png,true);String str4 qrCodeUtil.create(httstudy,F:\\Logo.png,true,0xff0000,0xffff00);System.out.println(str);System.out.println(str2);System.out.println(str3);System.out.println(str4);String result qrCodeUtil.decode(F:\\基础二维码.jpg);String result2 qrCodeUtil.decode(F:\\带颜色的二维码.jpg);String result3 qrCodeUtil.decode(F:\\带logo的二维码.jpg);String result4 qrCodeUtil.decode(F:\\带颜色和logo的二维码.jpg);System.out.println(result);System.out.println(result2);System.out.println(result3);System.out.println(result4);}} 运行结果 五、Gitee源码 码云地址SpringBoot生成二维码完整工具类分享 六、总结 良心博主原创封装不易把常见场景需要用到的二维码类型都给大家封装好了只要像单元测试那样一键生成就好了如有问题欢迎评论区留言