springboot生成二维码的正确姿势-附视频附源码

        <!-- 引入二维码依赖 -->
        <dependency>
             <groupId>com.google.zxing</groupId>
             <artifactId>core</artifactId>
             <version>3.2.0</version>
        </dependency>
        <dependency>
             <groupId>com.google.zxing</groupId>
             <artifactId>javase</artifactId>
             <version>3.2.0</version>
        </dependency>

package cn.net.javapub.springbootqr.demos.web.controller;

import cn.net.javapub.springbootqr.demos.web.utils.QRCodeUtil1;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;

/**
 * 作者 JavaPub
 */
@Controller
//@Deprecated
public class QrCodeController1 {
  /**
     * 根据 url 生成 普通二维码
     */
    @RequestMapping(value = "/createCommonQRCode")
    public void createCommonQRCode(HttpServletResponse response,HttpServletRequest request) throws Exception {
        ServletOutputStream stream = null;
        try {
            stream = response.getOutputStream();
            String url = request.getParameter("url");
            //使用工具类生成二维码
            QRCodeUtil1.encode(url, stream);
        } catch (Exception e) {
            e.getStackTrace();
        } finally {
            if (stream != null) {
                stream.flush();
                stream.close();
            }
        }
    }
 
    /**
     * 根据 url 生成 带有logo二维码
     */
    @RequestMapping(value = "/createLogoQRCode")
    public void createLogoQRCode(HttpServletResponse response,HttpServletRequest request) throws Exception {
        ServletOutputStream stream = null;
        try {
            stream = response.getOutputStream();
//            String logoPath = Thread.currentThread().getContextClassLoader().getResource("").getPath() 
//                    + "templates" + File.separator +"logo-"+UUID.randomUUID().toString().trim().replaceAll("-", "")+ ".jpg";
            String logoPath = Thread.currentThread().getContextClassLoader().getResource("").getPath() 
                    + "templates" + File.separator +"logo.jpg";
            String url = request.getParameter("url");
            //使用工具类生成二维码
            QRCodeUtil1.encode(url, logoPath, stream, true);
        } catch (Exception e) {
            e.getStackTrace();
        } finally {
            if (stream != null) {
                stream.flush();
                stream.close();
            }
        }
    }
}