fix bugs

stmms-biz/src/main/java/cn/com/qmth/stmms/biz/exam/service/impl/ExamStudentServiceImpl.java

@@ -729,7 +729,7 @@ public class ExamStudentServiceImpl extends BaseQueryService<ExamStudent> implem
         // 构造评卷标记信息
         Exam exam = examService.findById(student.getExamId());
         ExamSubject subject = subjectService.find(student.getExamId(), student.getSubjectCode());
-        List<PictureConfigItem> sliceConfig = subject.getSliceConfigList().isEmpty()?subject.getSliceConfigList():exam.getSliceConfigList();
+        List<PictureConfigItem> sliceConfig = subject.getSliceConfigList().isEmpty()?exam.getSliceConfigList():subject.getSliceConfigList();
         if (!sliceConfig.isEmpty()) {
             List<PictureTag> tags = PictureConfigTransform
                     .process(sliceConfig, getSliceSet(student), getSliceTags(student)).get(index);
@@ -748,7 +748,7 @@ public class ExamStudentServiceImpl extends BaseQueryService<ExamStudent> implem
         List<OriginTag> tags = new ArrayList<OriginTag>();
         Exam exam = examService.findById(student.getExamId());
         ExamSubject subject = subjectService.find(student.getExamId(), student.getSubjectCode());
-        List<PictureConfigItem> sliceConfig = subject.getSliceConfigList().isEmpty()?subject.getSliceConfigList():exam.getSliceConfigList();
+        List<PictureConfigItem> sliceConfig = subject.getSliceConfigList().isEmpty()?exam.getSliceConfigList():subject.getSliceConfigList();
         if (!sliceConfig.isEmpty()) {
             // 有裁切图配置时才需要获取原始评卷标记信息
             tags = getSliceTags(student);