update

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

@@ -337,7 +337,7 @@ public class StudentRegistrationServiceImpl extends BaseServiceImpl<Long, Studen
 //            sysUser.setRealName(studentRegistration.getParentsName());
 //        }
 
-        if (sysUser.getUsername() == null) {
+        if (StringUtils.isEmpty(sysUser.getUsername())) {
             sysUser.setUsername(studentRegistration.getName());
             updateNameFlag = true;
         }