Merge branch 'reg_feature'

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

@@ -165,7 +165,7 @@ public class StudentManageServiceImpl implements StudentManageService {
             }
 
             if(userContractVersionMap.containsKey(dto.getUserId())){
-                dto.setContractVersions(StringUtils.join(userContractVersionMap.get(dto.getUserId())));
+                dto.setContractVersions(StringUtils.join(userContractVersionMap.get(dto.getUserId()), ","));
             }
 //            for (Subject subject : studentSubject) {
 //                if(!subject.getId().equals(dto.getUserId())) continue;