主观题导入试卷结构时如果间隔分是0，则强制将其转换成1

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

@@ -51,7 +51,7 @@ public class SubjectiveQuestionDTO implements QuestionDTO {
         question.setObjective(false);
         question.setMainTitle(StringUtils.trimToNull(title));
         question.setTotalScore(totalScore);
-        question.setIntervalScore(intervalScore != null ? intervalScore : 1d);
+        question.setIntervalScore((intervalScore != null  && intervalScore > 0d) ? intervalScore : 1d);
         question.setTotalCount(0);
         question.setZeroCount(0);
         question.setFullCount(0);