fix

zhongzheng-system/src/main/java/com/zhongzheng/modules/grade/service/impl/ClassGradeUserServiceImpl.java

@@ -879,7 +879,7 @@ public class ClassGradeUserServiceImpl extends ServiceImpl<ClassGradeUserMapper,
                     item.setModuleName(cVo.getModuleName());
                     item.setChapterName(cVo.getChapterName());
                     item.setSectionName(cVo.getSectionName());
-                    item.setDurationTime(Validator.isEmpty(cVo.getDurationTime())?new BigDecimal(0):((new BigDecimal(cVo.getDurationTime()).divide(new BigDecimal(3600),BigDecimal.ROUND_CEILING))));
+                    item.setDurationTime(Validator.isEmpty(cVo.getDurationTime())?new BigDecimal(0):((new BigDecimal(cVo.getDurationTime()).divide(new BigDecimal(3600),2,BigDecimal.ROUND_DOWN))));
                     item.setStudyTimeTxt(cVo.getStudyTimeTxt());
                     item.setStudyTimeLongTxt(cVo.getStudyTimeLongTxt());
                     item.setStudyStatusTxt(cVo.getStudyStatusTxt());