课程管理，课件管理

src/custom/restcontroller/webmanage/saletool/courseware/courseware.java

@@ -301,7 +301,7 @@ public class courseware extends Controller {
         LinkedHashSet<String> classids1 = new LinkedHashSet<>();
         classids1.add("-1");
         LinkedHashSet<String> classids2 = new LinkedHashSet<>();
-        classids1.add("-2");
+        classids2.add("-2");
         for (Object obj : sat_courseware_classids) {
             JSONArray objects = (JSONArray) obj;
             if (objects.size() == 1) {