fix(study): 解决班级考试试卷查询空指针异常

web-app/src/main/java/com/zcloud/edu/command/query/study/ClassExamPaperQueryExe.java

@@ -79,6 +79,9 @@ public class ClassExamPaperQueryExe {
      */
     public SingleResponse<ClassExamPaperCO> executeGetInfoByClassId(String classId) {
         ClassExamPaperDO classExamPaperDO = classExamPaperRepository.findByClassId(classId);
+        if(classExamPaperDO == null){
+            return SingleResponse.of(null);
+        }
         List<QuestionDO> questionDOList = questionRepository.getInfoByExamPaperId(classExamPaperDO.getExamPaperId());
         List<QuestionCO> questionCOList = BeanUtil.copyToList(questionDOList, QuestionCO.class);
         ClassExamPaperCO classExamPaperCO = new ClassExamPaperCO();

web-client/src/main/java/com/zcloud/edu/dto/study/ClassPageQry.java

@@ -27,6 +27,7 @@ public class ClassPageQry extends PageQuery {
     private String likeName;
     private String eqTrainType;
     private Integer eqState;
+    private Integer neState;
     private String geStartTime;
     private String leStartTime;
     private String geEndTime;