Demo：修复导入弹窗选择了一个文件后再把它删除实际上并没有删掉的问题

web/src/pages/Edit/components/Import.vue

@@ -8,10 +8,12 @@
     <el-upload
       ref="upload"
       action="x"
+      accept=".smm,.json,.xmind,.xlsx,.md"
       :file-list="fileList"
       :auto-upload="false"
       :multiple="false"
       :on-change="onChange"
+      :on-remove="onRemove"
       :limit="1"
       :on-exceed="onExceed"
     >
@@ -117,6 +119,11 @@ export default {
       }
     },
 
+    // 移除文件
+    onRemove(file, fileList) {
+      this.fileList = fileList
+    },
+
     /**
      * @Author: 王林
      * @Date: 2021-08-03 22:48:47