fix

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

@@ -867,7 +867,13 @@ public class ImportPaperFromJsonService {
                 question.setQuesAnswer(answerHTML.toString());
             }
         } else {
-            question.setQuesAnswer("");
+            if (question.getQuestionType() == QuesStructType.SINGLE_ANSWER_QUESTION
+                    || question.getQuestionType() == QuesStructType.MULTIPLE_ANSWER_QUESTION
+                    ||question.getQuestionType() == QuesStructType.BOOL_ANSWER_QUESTION) {
+                question.setQuesAnswer("");
+            }else {
+                question.setQuesAnswer("<p></p>");
+            }
         }
 
         if (quesScore != null) {

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

@@ -1047,7 +1047,13 @@ public class ImportPaperService {
             }
             question.setQuesAnswerWord(answerWordML.toString());
         } else {
-            question.setQuesAnswer("");
+            if (question.getQuestionType() == QuesStructType.SINGLE_ANSWER_QUESTION
+                    || question.getQuestionType() == QuesStructType.MULTIPLE_ANSWER_QUESTION
+                    ||question.getQuestionType() == QuesStructType.BOOL_ANSWER_QUESTION) {
+                question.setQuesAnswer("");
+            }else {
+                question.setQuesAnswer("<p></p>");
+            }
             question.setQuesAnswerWord(answerWordML.toString());
         }