单项选择题
To implement the design intent， which statement must be inserted at line 42？（）
A. session = response.getSession（）；
B. session = request.getSession（）；
C. session = request.getSession（true）；
D. session = request.getSession（false）；
E. session = request.getSession（“jsessionid”）；
相关考题
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多项选择题
Giventhatascopedattributecartexistsonlyinauser’ssession，whichtwo，takenindependently，ensurethescopedattributecartnolongerexists？（）
B. <c：remove var="cart" />
C. <c：remove var="${cart}" />
D. <c：remove var="cart" scope="session" />
E. <c：remove scope="session">cart</c：remove>
F. <c：remove var="${cart}" scope="session" />
G. <c：remove scope="session">${cart}</c：remove> -
单项选择题
Which option prevents the exception thrown by my：errorProne from invoking the error page mechanism and outputs the message "File not found" in the response？（）
A.A
B.B
C.C
D.D
E.E -
单项选择题
Whichinterfacemustaclassimplementsothatinstancesoftheclassarenotifiedafteranyobjectisaddedtoasession？（）
A. javax.servlet.http.HttpSessionListener
B. javax.servlet.http.HttpSessionValueListener
C. javax.servlet.http.HttpSessionBindingListener
D. javax.servlet.http.HttpSessionAttributeListener
