fix

src/main/java/com/iconplus/smartproc/service/CommonService.java

@@ -1,5 +1,9 @@
 package com.iconplus.smartproc.service;
 
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.client.j2se.MatrixToImageWriter;
+import com.google.zxing.common.BitMatrix;
+import com.google.zxing.qrcode.QRCodeWriter;
 import com.iconplus.smartproc.exception.BusinessException;
 import com.iconplus.smartproc.model.entity.TokenManagement;
 import com.iconplus.smartproc.model.request.UsersRequest;
@@ -11,6 +15,7 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Service;
 
+import java.awt.image.BufferedImage;
 import java.sql.Timestamp;
 import java.time.Instant;
 
@@ -105,4 +110,12 @@ public class CommonService {
         }
 
     }
+
+    public BufferedImage generateQRCodeImage(String barcodeText) throws Exception {
+        QRCodeWriter barcodeWriter = new QRCodeWriter();
+        BitMatrix bitMatrix =
+                barcodeWriter.encode(barcodeText, BarcodeFormat.QR_CODE, 200, 200);
+
+        return MatrixToImageWriter.toBufferedImage(bitMatrix);
+    }
 }