页面部分

<ElFormItem label="广告图" :limit="1" prop="cover" required>
        <ElUpload
          v-model:file-list="imgurl"
          :class="{ disabled: uploadDisabled }"
          :limit="1"
          :auto-upload="false"
          action="#"
          accept="image/jpeg,image/jpg,image/png"
          list-type="picture-card"
          :on-change="handleFileChange"
          :on-remove="handleRemove"
        >
          <ElButton>选择图片</ElButton>
          <template #tip>
            <div class="el-upload__tip">只能上传jpg/png图片</div>
          </template>
        </ElUpload>
      </ElFormItem>

js部分

const uploadDisabled = ref(false);
/**修改图片 */
const handleFileChange = (file: any, files: any) => {
  if (files.length >= 1) {
    uploadDisabled.value = true;
  } else {
    uploadDisabled.value = false;
  }
  imgurl.value = files;
  modalformData.value.cover = file;
};
function handleRemove(file: any, files: any) {
  uploadDisabled.value = false;
}



//新增或者编辑上传的图片调出的弹窗框
const [Modal, modalApi] = useVbenModal({
  onOpenChange(isOpen: boolean) {
    if (isOpen) {
      data.value = modalApi.getData<Record<string, any>>();
      title.value = data.value.title;
      modalformData.value = data.value.formData;
      //编辑数据图片回显
      if (modalformData.value.cover) {
        imgurl.value = [{ url: data.value.formData.coverUrl }];
        //编辑的时候判断只显示一个上传图片
        if (data.value.formData.coverUrl) {
          uploadDisabled.value = true;
        } else {
          uploadDisabled.value = false;
        }
      }
    }
  },

  async onClosed() {
    imgurl.value = [];
  },
  async onConfirm() {
    await formRef.value.validate();
    if (!imgurl.value.length) {
      ElMessage.error("请上传广告图");
      return;
    }
    /**只有修改了图片才需要从oss获取图片地址 */
    const file = imgurl.value[0].raw as File;
    if (file) {
      const coverUrl = await uploadToOSS(file);
      modalformData.value.cover = coverUrl; // 保存 OSS 路径
    }

    if (modalformData.value.id === 0) {
      await addSupesrSystemAdApi({ ...modalformData.value });
      ElMessage.success("添加成功");
    } else {
      await upSupesrSystemAdApi({ ...modalformData.value });
      ElMessage.success("修改成功");
    }
    const data = modalApi.getData<{ onRefresh?: Function }>();
    data.onRefresh?.();
    modalApi.setState({ loading: false });
    modalApi.close();
    imgurl.value = [];
  },
});

css部分

<style lang="scss" scoped>

:deep(.disabled) .el-upload.el-upload--picture-card {
  display: none !important;
}

:deep(.disabled) .el-button--success.is-plain {
  display: none !important;
}
</style>