SpringBoot二维码生成base64并上传OSS的实现示例
基础环境
SpringBoot、Maven
代码实现
1.添加依赖
<!--二维码生成 -->
<dependency>
<groupId>com.Google.zxing</groupId>
<artifactId>core</artifactId>
<version>3.3.3</version>
</dependency>
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>javase</artifactId>
<version>3.3.3</version>
</dependency>
2.工具类
package com.milu.boss.common.util;
import cn.hutool.core.codec.Base64;
import cn.hutool.core.util.StrUtil;
import com.google.zxing.BarcodeFORMat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import java.awt.*;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URL;
import java.util.HashMap;
@Slf4j
@Component
public class QrCodeUtil {
private static final Integer WIDTH = 140;
private static final Integer HEIGHT = 140;
private static final Integer LOGO_WIDTH = 22;
private static final Integer LOGO_HEIGHT = 22;
private static final String IMAGE_FORMAT = "png";
private static final String CHARSET = "utf-8";
private static final String BASE64_IMAGE = "data:image/png;base64,%s";
public String getBase64QRCode(String content) {
return getBase64Image(content, WIDTH, HEIGHT, null, null, null);
}
public String getBase64QRCode(String content, String logoUrl) {
return getBase64Image(content, WIDTH, HEIGHT, logoUrl, LOGO_WIDTH, LOGO_HEIGHT);
}
public String getBase64QRCode(String content, Integer width, Integer height, String logoUrl, Integer logoWidth, Integer logoHeight) {
return getBase64Image(content, width, height, logoUrl, logoWidth, logoHeight);
}
private String getBase64Image(String content, Integer width, Integer height, String logoUrl, Integer logoWidth, Integer logoHeight) {
ByteArrayOutputStream os = new ByteArrayOutputStream();
BufferedImage bufferedImage = crateQRCode(content, width, height, logoUrl, logoWidth, logoHeight);
try {
ImageIO.write(bufferedImage, IMAGE_FORMAT, os);
} catch (IOException e) {
log.error("[生成二维码，错误{}]", e);
}
// 转出即可直接使用
return String.format(BASE64_IMAGE, Base64.encode(os.toByteArray()));
}
private BufferedImage crateQRCode(String content, Integer width, Integer height, String logoUrl, Integer logoWidth, Integer logoHeight) {
if (StrUtil.isNotBlank(content)) {
ServletOutputStream stream = null;
HashMap<EncodeHintType, Comparable> hints = new HashMap<>(4);
// 指定字符编码为utf-8
hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
// 指定二维码的纠错等级为中级
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
// 设置图片的边距
hints.put(EncodeHintType.MARGIN, 2);
try {
QRCodeWriter writer = new QRCodeWriter();
BitMatrix bitMatrix = writer.encode(content, BarcodeFormat.QR_CODE, width, height, hints);
BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
bufferedImage.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000 : 0xFFFFFFFF);
}
}
if (StrUtil.isNotBlank(logoUrl)) {
insertLogo(bufferedImage, width, height, logoUrl, logoWidth, logoHeight);
}
return bufferedImage;
} catch (Exception e) {
e.printStackTrace();
} finally {
if (stream != null) {
try {
stream.flush();
stream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
return null;
}
private void insertLogo(BufferedImage source, Integer width, Integer height, String logoUrl, Integer logoWidth, Integer logoHeight) throws Exception {
// logo 源可为 File/InputStream/URL
Image src = ImageIO.read(new URL(logoUrl));
// 插入LOGO
Graphics2D graph = source.createGraphics();
int x = (width - logoWidth) / 2;
int y = (height - logoHeight) / 2;
graph.drawImage(src, x, y, logoWidth, logoHeight, null);
Shape shape = new RoundRectangle2D.Float(x, y, logoWidth, logoHeight, 6, 6);
graph.setStroke(new BasicStroke(3f));
graph.draw(shape);
graph.dispose();
}
public void getQRCode(String content, OutputStream output) throws IOException {
BufferedImage image = crateQRCode(content, WIDTH, HEIGHT, null, null, null);
ImageIO.write(image, IMAGE_FORMAT, output);
}
public void getQRCode(String content, String logoUrl, OutputStream output) throws Exception {
BufferedImage image = crateQRCode(content, WIDTH, HEIGHT, logoUrl, LOGO_WIDTH, LOGO_HEIGHT);
ImageIO.write(image, IMAGE_FORMAT, output);
}
}
3.测试生成
public static void main(String[] args) {
QrCodeUtil qrCodeUtil=new QrCodeUtil();
String content="https://www.baidu.com/";
String logoUrl="/file/imgs/upload/202211/13/eqbrqnbly2r.jpg";
String url =qrCodeUtil.getBase64QRCode(content, logoUrl);
System.out.println(url);
}
执行结果：Base64 字符串
data:image/png;base64,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
4.base64 转换为图片在线工具
Http://tools.jb51.net/transcoding/img2base64
5.base64图片上传oss
5.1 base64图片 转 MultipartFile
package com.milu.boss.common.util;
import org.springframework.WEB.multipart.MultipartFile;
import sun.misc.BASE64Decoder;
import java.io.*;
public class BASE64DecodedMultipartFile implements MultipartFile {
private final byte[] imgContent;
private final String header;
public BASE64DecodedMultipartFile(byte[] imgContent, String header) {
this.imgContent = imgContent;
this.header = header.split(";")[0];
}
@Override
public String getName() {
return System.currentTimeMillis() + Math.random() + "." + header.split("/")[1];
}
@Override
public String getOriginalFilename() {
return System.currentTimeMillis() + (int) Math.random() * 10000 + "." + header.split("/")[1];
}
@Override
public String getContentType() {
return header.split(":")[1];
}
@Override
public boolean isEmpty() {
return imgContent == null || imgContent.length == 0;
}
@Override
public long getSize() {
return imgContent.length;
}
@Override
public byte[] getBytes() throws IOException {
return imgContent;
}
@Override
public InputStream getInputStream() throws IOException {
return new ByteArrayInputStream(imgContent);
}
@Override
public void transferTo(File dest) throws IOException, IllegalStateException {
new FileOutputStream(dest).write(imgContent);
}
public static MultipartFile base64ToMultipart(String base64) {
try {
String[] baseStrs = base64.split(",");
BASE64Decoder decoder = new BASE64Decoder();
byte[] b = new byte[0];
b = decoder.decodeBuffer(baseStrs[1]);
for (int i = 0; i < b.length; ++i) {
if (b[i] < 0) {
b[i] += 256;
}
}
return new BASE64DecodedMultipartFile(b, baseStrs[0]);
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
public static InputStream getQrCodeInputStream(String base64){
MultipartFile multipartFile = BASE64DecodedMultipartFile.base64ToMultipart(base64);
try {
return multipartFile.getInputStream();
} catch (IOException e) {
return null;
}
}
}
base64图片转MultipartFile ：
MultipartFile multipartFile = BASE64DecodedMultipartFile.base64ToMultipart(base64);
5.2 MultipartFile 上传oss
public static InputStream getQrCodeInputStream(String base64){
MultipartFile multipartFile = BASE64DecodedMultipartFile.base64ToMultipart(base64);
try {
return multipartFile.getInputStream();
} catch (IOException e) {
return null;
}
}
图片流上传oos：
public String uploadImageUrl(InputStream fis){
String url = "";
try {
String fileExt = "png";;
//生成新的文件名
String newfilename = "file/";
Date now = new Date();
SimpleDateFormat date = new SimpleDateFormat("yyyyMMdd");
newfilename += date.format(now) + "/";
SimpleDateFormat time = new SimpleDateFormat("HHmmssSSS");
newfilename += time.format(now);
newfilename += "_" + new Random().nextInt(1000) + "." + fileExt;
ossService.upload(newfilename, fis);
url = "配置的阿里云OSS图片地址OSS_PIC_URL" + newfilename;
}catch (Exception e) {
e.printStackTrace();
}
return url;
}
ossService.upload：
public boolean upload(String filepath, InputStream inputstream) {
boolean result = false;
// 初始化配置参数
String OSS_ENDPOINT = "阿里云 上传oss 配置的 ENDPOINT";
String OSS_ACCESSKEYID = "阿里云 上传oss 配置的 CCESSKEYID";
String OSS_ACCESSKEYSECRET = "阿里云 上传oss 配置的 ACCESSKEYSECRET";
String OSS_BUCKET = "阿里云 上传oss 配置的 BUCKET";
OSSClient ossClient = null;
try {
if (filepath != null && !"".equals(filepath.trim())) {
// 创建ClientConfiguration实例，按照您的需要修改默认参数
ClientConfiguration conf = new ClientConfiguration();
// 开启支持CNAME选项
conf.setSupportCname(true);
ossClient = new OSSClient(OSS_ENDPOINT, OSS_ACCESSKEYID, OSS_ACCESSKEYSECRET, conf);
// 上传
ossClient.putObject(OSS_BUCKET, filepath, inputstream);
result = true;
}
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException("文件上传异常");
} finally {
// 关闭client
ossClient.shutdown();
}
return result;
}
参考资料：https://zhuanlan.zhihu.com/p/158576491
到此这篇关于SpringBoot 二维码生成base64并上传OSS的实现示例的文章就介绍到这了,更多相关SpringBoot 二维码生成base64内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持！
相关文章