fix

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

@@ -797,6 +797,7 @@ public class RandomPaperServiceImpl implements RandomPaperService {
 				int detailNumber = 0;
 				for (PaperDetailStruct ds : ps.getPaperDetailStructs()) {
 					DefaultQuestionGroup detail = new DefaultQuestionGroup();
+					details.add(detail);
 					detail.setGroupName(ds.getName());
 					detail.setGroupScore(ds.getTotalScore());
 					List<DefaultQuestionStructureWrapper> units = new ArrayList<>();
@@ -817,6 +818,7 @@ public class RandomPaperServiceImpl implements RandomPaperService {
 				int detailNumber = 0;
 				for (PaperDetailStruct ds : ps.getPaperDetailStructs()) {
 					DefaultQuestionGroup detail = new DefaultQuestionGroup();
+					details.add(detail);
 					detail.setGroupName(ds.getName());
 					detail.setGroupScore(ds.getTotalScore());
 					List<DefaultQuestionStructureWrapper> units = new ArrayList<>();
@@ -938,6 +940,7 @@ public class RandomPaperServiceImpl implements RandomPaperService {
 		for (int i = 0; i < param.getUnitCount(); i++) {
 			RandomPaperQuestion rpq = rpqs.get(i);
 			DefaultQuestionStructureWrapper qw = new DefaultQuestionStructureWrapper();
+			param.getUnits().add(qw);
 			qw.setLimitedPlayTimes(param.getPlayTime());
 			qw.setPlayedTimes(0);
 			qw.setQuestionId(rpq.getQuestionId());