update

mec-biz/src/main/java/com/ym/mec/biz/service/impl/SysMessageServiceImpl.java

@@ -317,12 +317,15 @@ public class SysMessageServiceImpl extends BaseServiceImpl<Long, SysMessage> imp
 			return;
 		}
 		Integer userId = receivers.keySet().iterator().next();
+		Integer receiverTenantId = 0;
 		SimpleUserDto simpleUserDto = teacherDao.getSimpleUser(userId);
-		Integer receiverTenantId = simpleUserDto.getTenantId();
+		if(simpleUserDto != null){
+			receiverTenantId = simpleUserDto.getTenantId();
+		}
 
 		// email data from database load, 使用接收者 tenantId, 假设发送者和接收者为同一机构
 		if (Objects.equals(messageSender.getSendMode(), "EMAIL")) {
-			LOGGER.info("batch 发送邮件 {} ", simpleUserDto.getTenantId());
+			LOGGER.info("batch 发送邮件 {} ", receiverTenantId);
 			loadEmailInfo(senderTenantId);
 			// debugMode = false;
 		}