SpringBoot生成二维码的实现

效果图

在这里插入图片描述

步骤

maven依赖

<!--    生成二维码-->
    <dependency>
      <groupId>com.google.zxing</groupId>
      <artifactId>javase</artifactId>
      <version>3.3.0</version>
    </dependency>

工具类

package com.bennyrhys.mall.util;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;

import java.io.IOException;
import java.nio.file.FileSystems;
import java.nio.file.Path;

/**
 * 描述：   生成二维码工具
 */
public class QRCodeGenerator {


  public static void generateQRCodeImage(String text, int width, int height, String filePath)
      throws WriterException, IOException {
    QRCodeWriter qrCodeWriter = new QRCodeWriter();
    BitMatrix bitMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, width, height);
    Path path = FileSystems.getDefault().getPath(filePath);
    MatrixToImageWriter.writeToPath(bitMatrix, "PNG", path);
  }

  public static void main(String[] args) {
    try {
      generateQRCodeImage("Hello World", 350, 350, "E:/JAVA/mall/src/main/resources/images/QRTest.png");
    } catch (WriterException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}

service

/**
   * 生成二维码
   * 图片可解析出访问的支付对应订单号的支付连接
   * @param orderNo 订单号
   * @return 返回图片地址
   */
  @Override
  public String qrcode(String orderNo) {
    ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
    HttpServletRequest request = attributes.getRequest();

    String address = ip + ":" + request.getLocalPort();
    String payUrl = "http://" + address + "/pay?orderNo=" + orderNo;
    try {
      QRCodeGenerator.generateQRCodeImage(payUrl, 350, 350, Constant.FILE_UPLOAD_PATH + orderNo + ".png");
    } catch (WriterException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    String pngAddress = "http://" + address + "/images-dev/" + orderNo + ".png";
    return pngAddress;
  }

扩展

局域网调试

在这里插入图片描述

线上调试

切换ip
# 指定IP(防止ip转发获取的是内网ip) file.upload.ip=127.0.0.1

到此这篇关于SpringBoot生成二维码的实现的文章就介绍到这了,更多相关SpringBoot生成二维码内容请搜索社区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社区！