71867 【管理端】目录-上传视频点击保存后，点击关闭，页面变为空，关闭按钮无反应

src/views/courseInformation/courseManagement/courseCatalogues.vue

@@ -188,7 +188,7 @@
           </div>
           <edu-file v-if="fileShow&&!pdfShow&&!pptShow&&!videoShow" :chp-id="curChapterId" :file-name="fileName" />
           <span slot="footer" class="dialog-footer">
-            <el-button @click="previewClear">关 闭</el-button>
+            <el-button @click="resForm.preview=false">关 闭</el-button>
           </span>
         </el-dialog>
         <div class="cur-line" />

src/views/courseInformation/examinationManagement/examinationPaper.vue

@@ -325,7 +325,7 @@
         <div slot="tip" class="el-upload__tip" style="color:red">提示：仅允许导入“xls”或“xlsx”格式文件！</div>
       </el-upload>
       <div slot="footer" class="dialog-footer">
-        <el-button class="cancelBtn" @click="upload.open = false">取 消</el-button>
+        <el-button class="cancelBtn" @click="uploadCancel">取 消</el-button>
         <el-button class="submitBtn" :loading="importLoading" type="primary" @click="submitFileForm">确 定</el-button>
       </div>
     </el-dialog>
@@ -906,6 +906,10 @@ export default {
       this.$alert(response.msg, '导入结果', { dangerouslyUseHTMLString: true })
       this.getList()
     },
+    uploadCancel() {
+      this.$refs.upload.clearFiles()
+      this.upload.open = false
+    },
     // 提交上传文件
     submitFileForm() {
       var courseId = this.courseId