fix

examcloud-core-questions-service/src/main/java/cn/com/qmth/examcloud/core/questions/service/util/ExportPaperUtil.java

@@ -527,15 +527,15 @@ public class ExportPaperUtil {
                 }
             }
             List<JSection> slist3 = getSections(qes.getQuesAnswer());
-            if (slist3 != null && slist3.size() > 0) {
-                SectionElement se = new SectionElement();
-                se.setType(ELEMENT_TYPE_TEXT);
-                se.setValue("[答案]:");
-                slist3.get(0).getElements().add(0, se);
-
-                htmlToDoc(slist3, dto);
-                qes.setQuesAnswerWord(getQuestionDoc(slist3));
+            if (slist3 == null) {
+                slist3=new ArrayList<JSection>();
             }
+            SectionElement se = new SectionElement();
+            se.setType(ELEMENT_TYPE_TEXT);
+            se.setValue("[答案]:");
+            slist3.get(0).getElements().add(0, se);
+            htmlToDoc(slist3, dto);
+            qes.setQuesAnswerWord(getQuestionDoc(slist3));
 
             if (qes.getSubQuestions() != null && qes.getSubQuestions().size() > 0) {
                 dto.setSubNum(0);