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单选题

Given an HttpServletRequest request and an HttpServletResponse response: 41.HttpSession session = null; 42.// insert code here 43.if(session == null) { 44.// do something if session does not exist 45.} else { 46.// do something if session exists47. } To implement the design intent,which statement must be inserted at line 42?()

发布日期:2022-06-08

Given an HttpServletRequest request and an HttpSer...
A

session = response.getSession();

B

session = request.getSession();

C

session = request.getSession(true);

D

session = request.getSession(false);

E

session = request.getSession(jsessionid);

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