....

examcloud-exchange-outer-service/src/main/java/cn/com/qmth/examcloud/exchange/outer/service/impl/FaceServiceImpl.java

@@ -204,8 +204,9 @@ public class FaceServiceImpl implements FaceService {
 			throw new StatusException("B-630001", "无可用的faceset");
 		}
 
-		FacesetBean facesetBean = facesetBeanList
-				.get(RandomUtils.nextInt(facesetBeanList.size() - 1));
+		int size = facesetBeanList.size();
+		int index = RandomUtils.nextInt(size);
+		FacesetBean facesetBean = facesetBeanList.get(index);
 		return facesetBean.getFacesetToken();
 	}