成绩导出可能存在的问题

themis-business/src/main/java/com/qmth/themis/business/templete/impl/TaskMarkResultStandardExportTemplete.java

@@ -279,7 +279,7 @@ public class TaskMarkResultStandardExportTemplete implements TaskExportTemplete
                                             .get(markResultStandardExportDto.getExamStudentId());
                                     if (Objects.nonNull(excelDtoList) && excelDtoList.size() > 0) {
                                         excelDtoList.forEach(s -> {
-                                            if (Objects.nonNull(s) && Objects.nonNull(s.getTitle())) {
+                                            if (Objects.nonNull(s) && Objects.nonNull(s.getTitle()) && Objects.nonNull(position.get(s.getTitle()))) {
                                                 taskExportCommon.createExcelCell(sxssfRow, position.get(s.getTitle()),
                                                         s.getContent(), style);
                                             }