成绩导出列表判断如果主观题或客观题为NULL的情况，将七分数设置为0

stmms-web/src/main/java/cn/com/qmth/stmms/admin/dto/ExamStudentDTO.java

@@ -55,8 +55,8 @@ public class ExamStudentDTO {
         setExamNumber(student.getExamNumber());
         setStudentCode(student.getStudentCode());
         setName(student.getName());
-        setObjectiveScore(student.getObjectiveScore());
-        setSubjectiveScore(student.getSubjectiveScore());
+        setObjectiveScore(student.getObjectiveScore()!=null?student.getObjectiveScore():0d);
+        setSubjectiveScore(student.getSubjectiveScore()!=null?student.getSubjectiveScore():0d);
         setSubjectiveScoreList(StringUtils.trimToEmpty(student.getSubjectiveScoreList()));
         setTotalScore(student.getTotalScore());
         setRemark(StringUtils.trimToEmpty(student.getRemark()));