fix bug

core-api/src/main/java/cn/com/qmth/examcloud/service/core/api/StudentFaceInfoApi.java

@@ -93,6 +93,12 @@ public class StudentFaceInfoApi {
         studentFaceInfo4Update.setFaceToken(studentFaceInfo.getFaceToken());
         studentFaceInfo4Update.setFaceSetToken(studentFaceInfo.getFaceSetToken());
 
+        Student student = studentRepo.findOne(studentFaceInfo.getStudent().getId());
+        if(student != null){
+            student.setPhotoPath(student.getIdentityNumber()+"/"+studentFaceInfo.getPhotoMD5());
+            studentRepo.save(student);
+        }
+
         return new ResponseEntity(studentFaceInfoRepo.save(studentFaceInfo4Update), HttpStatus.OK);
     }