3.2.3 按学校推送bug修改

distributed-print-business/src/main/java/com/qmth/distributed/print/business/service/impl/ExamTaskSyncServiceImpl.java

@@ -25,6 +25,8 @@ public class ExamTaskSyncServiceImpl extends ServiceImpl<ExamTaskSyncMapper, Exa
                 .eq(ExamTaskSync::getPaperNumber, paperNumber);
         if(StringUtils.isNotBlank(orgCode)){
             queryWrapper.lambda().eq(ExamTaskSync::getOrgCode, orgCode);
+        } else {
+            queryWrapper.lambda().isNull(ExamTaskSync::getOrgCode);
         }
         return this.getOne(queryWrapper);
     }