解决二维码初始化只能拖拽一个的问题

src/components/yvan-ui/YvanPrintBarcode.vue

@@ -3,7 +3,7 @@
 </template>
 
 <script lang="js">
-import system from '@/utils/system'
+import System from '@/utils/system'
 import JsBarcode from 'jsbarcode';
 
 export default {
@@ -28,7 +28,7 @@ export default {
   },
   data() {
     return {
-      barcodeId: 'barcode-' + system.getUuid()
+      barcodeId: 'barcode-' + System.getUuid()
     }
   },
   mounted() {