One of the use cases in your web application uses many session-scoped attributes. At the end of the usecase,you want to clear out this set of attributes from the session object. Assume that this static variableholds this set of attribute names: 201.private static final Set USE_CASE_ATTRS; 202.static { 203.USE_CASE_ATTRS.add("customerOID"); 204.USE_CASE_ATTRS.add("custMgrBean"); 205.USE_CASE_ATTRS.add("orderOID"); 206.USE_CASE_ATTRS.add("orderMgrBean"); 207.} Which code snippet deletes these attributes from the session object?()
- A、session.removeAll(USE_CASE_ATTRS);
- B、for ( String attr : USE_CASE_ATTRS ) {session.remove(attr);}
- C、for ( String attr : USE_CASE_ATTRS ) {session.removeAttribute(attr);}
- D、for ( String attr : USE_CASE_ATTRS ) {session.deleteAttribute(attr);}
- E、session.deleteAllAttributes(USE_CASE_ATTRS);
正确答案:C
答案解析:有