update

stmms-web/src/main/java/cn/com/qmth/stmms/admin/exam/StudentController.java

@@ -583,6 +583,7 @@ public class StudentController extends BaseExamController {
         if (previous != null) {
             return previous;
         }
+        current.put(student.getExamNumber(),student);
         return null;
     }