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.${funct：calcAge（client.birthDate） < 25}
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You are creating an error page that provides a user-friendly screen whenever a server exception occurs.You want to hide the stack trace， but you do want to provide the exception’s error message to the user sothe user can provide it to the customer service agent at your company.
Which EL code snippet inserts thiserror message into the error page？（）
A.Message： <b>${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.${（requestScope[’foo’][0] lt 50） && （3 gt 2）}
You are building a Front Controller using a JSP page and you need to determine if the user’s session hasNOT been created yet and perform some special processing for this case.
Which scriptlet code snippet willperform this test？（）
A.<% if （ request.getSession（false） == null ） {// special processing} %>
B.<% if （ request.getHttpSession（false） == null ） {// special processing} %>
C.<% if （ requestObject.getSession（false） == null ） { // special processing} %>
D.<% if （ requestObject.getHttpSession（false） == null ） { // special processing} %>
You need to create a JSP that generates some JavaScript code to populate an array of strings used on theclient-side.
Which JSP code snippet will create this array？（）
A.MY_ARRAY = new Array（）；<% for （ int i = 0； i < serverArray.length； i++ ） { MY_ARRAY[<%= i %>] = ’<%= serverArray[i] %>’；} %>
B.MY_ARRAY = new Array（）；. <% for （ int i = 0； i < serverArray.length； i++ ） { . MY_ARRAY[${i}] = ’${serverArray[i]}’；. } %>
C.MY_ARRAY = new Array（）；. <% for （ int i = 0； i < serverArray.length； i++ ） { %> . MY_ARRAY[<%= i %>] = ’<%= serverArray[i] %>’；. <% } %>
D.MY_ARRAY = new Array（）；<% for （ int i = 0； i < serverArray.length； i++ ） { %> . MY_ARRAY[${i}] = ’${serverArray[i]}’；. <% } %>
最新試題
You are building a dating web site. The client’s date of birth is collected along with lots of other information.The Person class has a derived method， getAge（）：int， which returns the person’s age calculated from thedate of birth and today’s date. In one of your JSPs you need to print a special message to clients within theage group of 25 through 35.Which two EL code snippets will return true for this condition？ （）
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.
Which two are valid and equivalent？（）
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.
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？（）
Which is true about the web container request processing model？（）
Given a web application in which the request parameter productID contains a product identifier.Which twoEL expressions evaluate the value of the productID？（）
Which is a benefit of precompiling a JSP page？（）