Given in a single JSP page：
<%@ taglib prefix=’java’ uri=’myTags’ %>
<%@ taglib prefix=’JAVA’ uri=’moreTags’ %>
Which two are true？（）
A.The prefix ’java’ is reserved.
B.The URI ’myTags’ must be properly mapped to a TLD file by the web container.
C.A translation error occurs because the prefix is considered identical by the web container.
D.For the tag usage
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A.javax.servlet.http.HttpSessionListener
B.javax.servlet.http.HttpSessionBindingListener
C.javax.servlet.http.HttpSessionAttributeListener
D.javax.servlet.http.HttpSessionActivationListener
A web application uses the HttpSession mechanism to determine if a user is "logged in." When a usersupplies a valid user name and password， an HttpSession is created for that user. The user has access tothe application for only 15 minutes after logging in. The code must determine how long the user has beenlogged in， and if this time is greater than 15 minutes， must destroy the HttpSession.
Which method in HttpSession is used to accomplish this？（）
A.Getcreationtime
B.Invalidateafter
C.Getlastaccessedtime
D.Getmaxinactiveinterval
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？（）
A.session = response.getSession（）；
B.session = request.getSession（）；
C.session = request.getSession（true）；
D.session = request.getSession（false）；
E.session = request.getSession（"jsessionid"）；
A.It can be invoked only from the doGet or doPost methods.
B.It can be used independently of the getRemoteUser method.
C.Can return "true" even when its argument is NOT defined as a valid role name in the deployment descriptor.
D.Using the isUserInRole method overrides any declarative authentication related to the method in which it is invoked.
A.<realm-name>
B.<url-pattern>
C.<description>
D.<web-resource-name>
E.<transport-guarantee>
最新試題
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？（）
Which three are true about servlet filters？（）
You are building a web application with a scheduling component. On the JSP， you need to show the currentdate， the date of the previous week， and the date of the next week. To help you present this information，you have created the following EL functions in the ’d’ namespace： name： curDate； signature： java.util.DatecurrentDate（） name： addWeek； signature： java.util.Date addWeek（java.util.Date， int） name： dateString；signature：java.util.String getDateString（java.util.Date）Which EL code snippet will generate the string for the previousweek？
Click the ’Select and Place’ button.Place the events in the order they occur.
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？（）
The JSP developer wants a comment to be visible in the final output to the browser.Which comment styleneeds to be used in a JSP page？（）
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.