fix 考试

zhongzheng-admin/src/main/java/com/zhongzheng/controller/course/CourseSectionController.java

@@ -8,6 +8,7 @@ import java.util.Map;
 import cn.hutool.core.lang.Validator;
 import com.alibaba.fastjson.JSON;
 import com.zhongzheng.common.core.domain.model.LoginUser;
+import com.zhongzheng.common.exception.CustomException;
 import com.zhongzheng.common.utils.ServletUtils;
 import com.zhongzheng.framework.web.service.TokenService;
 import com.zhongzheng.modules.bank.vo.QuestionImport;
@@ -149,6 +150,9 @@ public class CourseSectionController extends BaseController {
     {
         List<CourseSectionBusinessAddBo> businessList = JSON.parseArray(businessJson, CourseSectionBusinessAddBo.class);
         ExcelUtil<CourseSectionImport> util = new ExcelUtil<CourseSectionImport>(CourseSectionImport.class);
+        if(Validator.isEmpty(file)){
+            throw new CustomException("文件错误");
+        }
         List<CourseSectionImport> sectionList = util.importExcel(file.getInputStream());
         Collections.reverse(sectionList);
         for(CourseSectionImport sectionImport : sectionList){