编辑的时候无法显示已添加附件

src/views/patentMining/components/dialog/addAndEditProject.vue

@@ -624,6 +624,9 @@ export default {
      *  */
     // 上传的文件监听
     onchangeFile(file, fileList) {
+      if(!this.form.systemFileList){
+        this.$set(this.form,'systemFileList',[])
+      }
       if (file.guid) {
         let index = this.form.systemFileList.findIndex(item => {
           return item.uid == file.uid