java Springboot 生成 二维码 +logo

上码，如有问题或者优化，劳请广友下方留言

1.工具类

import com.google.zxing.barcodeformat;
import com.google.zxing.encodehinttype;
import com.google.zxing.client.j2se.matrixtoimageconfig;
import com.google.zxing.client.j2se.matrixtoimagewriter;
import com.google.zxing.common.bitmatrix;
import com.google.zxing.qrcode.qrcodewriter;
import com.google.zxing.qrcode.decoder.errorcorrectionlevel;
import com.sun.org.apache.xml.internal.security.utils.base64;
import org.springframework.util.resourceutils;
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.fileoutputstream;
import java.io.ioexception;
import java.io.outputstream;
import java.util.hashmap;

public class qrcodeutil {
    public string createqrcode(string content,int width,int height,string path) throws ioexception {
        string resultimage="";
        if(!emptyutils.isempty(content)){
            servletoutputstream stream=null;
            bytearrayoutputstream os=new bytearrayoutputstream();
            @suppresswarnings("rawtypes")
            hashmap<encodehinttype,comparable> hints=new hashmap<>();
            hints.put(encodehinttype.character_set,"utf-8");//指定字符编码为“utf-8”
            hints.put(encodehinttype.error_correction, errorcorrectionlevel.m);//指定二维码的纠错等级为中
            hints.put(encodehinttype.margin,2);//指定二维码边距
            try {

                qrcodewriter writer=new qrcodewriter();
                bitmatrix bitmatrix=writer.encode(content, barcodeformat.qr_code,width,height,hints);
                matrixtoimageconfig config = new matrixtoimageconfig(0xff000001, 0xffffffff);
                bufferedimage bufferedimage= matrixtoimagewriter.tobufferedimage(bitmatrix,config);
//                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);
//                    }
//                }
                graphics2d g2 = bufferedimage.creategraphics();
                g2.drawimage(imageio.read(resourceutils.getfile(path)), width / 5 * 2, height / 5 * 2, width / 5, height / 5, null); // logo.png自行设置
                g2.setstroke(new basicstroke(5, basicstroke.cap_round, basicstroke.join_round));
                g2.draw(new roundrectangle2d.float(width / 5 * 2, height / 5 * 2, width / 5, height / 5, 20, 20));
                g2.dispose();
                g2.setcolor(color.white);
                g2.setbackground(color.white);
                bufferedimage.flush();
                imageio.write(bufferedimage,"png",os);
                outputstream out = new fileoutputstream("d:\\logo\\abb.png");
                out.write(os.tobytearray());
                resultimage=new string("data:image/png;base64,"+ base64.encode(os.tobytearray()));
                return resultimage;
            }catch (exception e){
                e.printstacktrace();
            }finally {
                if(stream!=null){
                    stream.flush();
                    stream.close();
                }
            }
        }
        return null;
    }
}

2.controlelr

 1  @requestmapping("/qrcode")
 2     public string qrcode(httpservletrequest request, httpservletresponse response) {
 3         try {
 4             qrcodeutil qrcodeutil=new qrcodeutil();
 5             string  path= resourceutils.geturl("classpath:").getpath()+"logo/logo.png";
 6             return qrcodeutil.createqrcode("https://www.cnblogs.com/xikui/",300,300,path);
 7         } catch (ioexception e) {
 8             e.printstacktrace();
 9             return "异常";
10         }
11     }