。。。

examcloud-core-examwork-service/src/main/java/cn/com/qmth/examcloud/core/examwork/service/impl/ExamServiceImpl.java

@@ -137,6 +137,10 @@ public class ExamServiceImpl implements ExamService {
 		DynamicEnumManager manager = ExamProperty.getDynamicEnumManager();
 
 		Map<DynamicEnum, String> map = Maps.newHashMap();
+		if (null == properties) {
+			return map;
+		}
+
 		for (Entry<String, String> entry : properties.entrySet()) {
 			String key = entry.getKey();
 			String value = entry.getValue();