Given：
11.<% java.util.Map map = new java.util.HashMap（）；
12.request.setAttribute（"map"， map）；
13.map.put（"a"， "b"）；
14.map.put（"b"， "c"）；
15.map.put（"c"， "d"）； %>
16.<%-- insert code here --%>
Which three EL expressions， inserted at line 16， are valid and evaluate to "d"？（）
A.${map.c}
B.${map[c]}
C.${map["c"]}
D.${map.map.b}
E.${map[map.b]}
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You are building a dating web site. The client’s date of birth is collected along with lots of other information.You have created an EL function with the signature：
calcAge（java.util.Date）：int and it is assigned to the name， age， in the namespace， funct. In one of your JSPsyou need to print a special message to clients who are younger than 25.
Which EL code snippet will returntrue for this condition？（）
A.${calcAge（client.birthDate） < 25}
B.${calcAge[client.birthDate] < 25}
C.${funct：age（client.birthDate） < 25}
D.${funct：age[client.birthDate] < 25}
E.${funct：calcAge（client.birthDate） < 25}
You are creating an error page that provides a user-friendly screen whenever a server exception occurs.You want to hide the stack trace， but you do want to provide the exception’s error message to the user sothe user can provide it to the customer service agent at your company.
Which EL code snippet inserts thiserror message into the error page？（）
A.Message： <b>${exception.message}</b>
B.Message： <b>${exception.errorMessage}</b>
C.Message： <b>${request.exception.message}</b>
D.Message： <b>${pageContext.exception.message}</b>
E.Message： <b>${request.exception.errorMessage}</b>
Click the Exhibit button.
Given：
11.<% com.example.Advisor advisor = new com.example.Advisor（）； %>
12.<% request.setAttribute（"foo"， advisor）； %>
Assuming there are no other "foo" attributes in the web application，which three are valid EL expressions forretrieving the advice property of advisor？（）
A.${foo.advice}
B.${request.foo.advice}
C.${requestScope.foo.advice}
D.${requestScope[foo[advice]]}
E.${requestScope["foo"]["advice"]}
Given：
6.<% int[] nums = {42， 420， 4200}；
7.request.setAttribute（"foo"， nums）； %>
Which two successfully translate and result in a value of true？（）
A.${true or false}
B.${requestScope[foo][0] > 500}
C.${requestScope[’foo’][1] = 420}
D.${（requestScope[’foo’][0] lt 50） && （3 gt 2）}
You are building a Front Controller using a JSP page and you need to determine if the user’s session hasNOT been created yet and perform some special processing for this case.
Which scriptlet code snippet willperform this test？（）
A.<% if （ request.getSession（false） == null ） {// special processing} %>
B.<% if （ request.getHttpSession（false） == null ） {// special processing} %>
C.<% if （ requestObject.getSession（false） == null ） { // special processing} %>
D.<% if （ requestObject.getHttpSession（false） == null ） { // special processing} %>
最新試題
Which two are valid and equivalent？（）
Which ensures that a JSP response is of type "text/plain"？（）
Click the Exhibit button.The attribute "name" has a value of "Foo，"What is the result if this tag handler’s tag is invoked？（）
A web browser need NOT always perform a complete request for a particular page that it suspects mightNOT have changed. The HTTP specification provides a mechanism for the browser to retrieve only a partialresponse from the web server； this response includes information， such as the Last-Modified date but NOTthe body of the page.Which HTTP method will the browser use to retrieve such a partial response？（）
You need to create a JSP that generates some JavaScript code to populate an array of strings used on the client-side.Which JSP code snippet will create this array？（）
Your IT department is building a lightweight Front Controller servlet that invokes an application logic objectwith the interface：public interface ApplicationController {public String invoke（HttpServletRequest request）}The return value of this method indicates a symbolic name of the next view. From this name， the FrontController servlet looks up the JSP URL in a configuration table. This URL might be an absolute path or apath relative to the current request. Next， the Front Controller servlet must send the request to this JSP togenerate the view. Assume that the servlet variable request is assigned the current HttpServletRequestobject and the variable context is assigned the webapp’s ServletContext. Which code snippet of the FrontController servlet accomplishes this goal？（）
Click the ’Select and Place’ button.Place the events in the order they occur.
You are building a dating service web site. Part of the form to submit a client’s profile is a groupIIof radio buttons for the person’s hobbies：20.<input type=’radio’ name=’hobbyEnum’ value=’HIKING’>Hiking <br>21.<input type=’radio’ name=’hobbyEnum’ value=’SKIING’>Skiing <br>22.<input type=’radio’ name=’hobbyEnum’ value=’SCUBA’>SCUBA Diving23.<!-- and more options -->After the user submits this form， a confirmation screen is displayed with these hobbies listed. Assume thatan application-scoped variable， hobbies， holds a map between the Hobby enumerated type and the displayname.Which EL code snippet will display Nth element of the user’s selected hobbies？（）
Click the 'Select and Place' button.Place the events in the order they occur.
Click the ’Select and Place’ button.Place the events in the order they occur.