添加考试过程控制锁

src/main/java/cn/com/qmth/examcloud/support/Constants.java

@@ -30,6 +30,10 @@ public interface Constants {
      */
     String OE_CODE_403 = "OE-000403";
 
+    /**
+     * 考试控制锁
+     */
+    String EXAM_CONTROL_LOCK_PREFIX = "oe_student:exam_control_lock_studentid_";
     /**
      * 开始考试锁
      */