统计表格，异常处理。

jsjp-admin/src/main/java/com/miaxis/app/controller/tms/TmsStudentInfoController.java

@@ -152,7 +152,8 @@ public class TmsStudentInfoController extends BaseController {
             return Response.success(studentInfoService.getStatisticsStuCountBySchoolId(bmDTO));
         } catch (SQLException e) {
             e.printStackTrace();
-            return Response.success("数据库开小差，请一会再试");
+            Response response = new Response(500,"系统开小差，请重试。");
+            return response;
         }
     }