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单项选择题 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);

  • C
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