Given：
5.public class MyTagHandler extends TagSupport {
6.public int doStartTag（） throws JspException {
7.try {
8.// insert code here
9.} catch（Exception ex） { /* handle exception */ }
10.return super.doStartTag（）；
11.}...42. }
Which code snippet， inserted at line 8，causes the value foo to be output？（）
A.JspWriter w = pageContext.getOut（）；
B.print（"foo"）；
C.JspWriter w = pageContext.getWriter（）；
D.JspWriter w = new JspWriter(pageContext.getWriter()); . w.print("foo");
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The h：highlight tag renders its body， highlighting an arbitrary number of words， each of which is passed asan attribute （word1， word2， ...）. For example， a JSP page can invoke theh：highlight tag as follows： 11. 12. high medium low 13. Given that HighlightTag extends SimpleTagSupport，which three steps are necessary to implement the taghandler for the highlight tag？（）
A.Add a doTag method
B.Add a doStartTag method
C.Add a getter and setter for the color attribute
D.Create and implement a TagExtraInfo class
E.Implement the DynamicAttributes interface
F.Add a getter and setter for the word1 and word2 attributes
Given an EL function declared with：11. <function>
12.<name>spin</name>
13.<function-class>com.example.Spinner</function-class>
14.<function-signature>
15.java.lang.String spinIt（）
16.</function-signature>
17.</function>
Which two are true？（）
A.The function method must have the signature： public String spin（）.
B.The method must be mapped to the logical name "spin" in the web.xml file.
C.The function method must have the signature： public String spinIt（）.
D.The function method must have the signature public static String spin（）.
E.The function method must have the signature： public static String spinIt（）.
F.The function class must be named Spinner， and must be in the package com.example.
Given a web application in which the cookie userName is expected to contain the name of the user.
Which EL expression evaluates to that user name？（）
A.${userName}
B.${cookie.userName}
C.${cookie.user.name}
D.${cookies.userName[0]}
Given： http：//com.example/myServlet.jsp？num=one&num=two&num=three.
Which two produce the output"one， two and three"？（）
A.${param.num[0]，[1] and [2]}
B.${paramValues[0]，[1] and [2]}
C.${param.num[0]}， ${param.num[1]} and ${param.num[2]}
D.${paramValues.num[0]}， ${paramValues.num[1]} and ${paramValues.num[2]}
E.${paramValues["num"][0]}， ${paramValues["num"][1]} and ${paramValues["num"][2]}
Given：
11.<% java.util.Map map = new java.util.HashMap（）；
12.request.setAttribute（"map"， map）；
13.map.put（"a"， "true"）；
14.map.put（"b"， "false"）；
15.map.put（"c"， "42"）； %>
Which three EL expressions are valid and evaluate to true？（）
A.${not map.c}
B.${map.d or map.a}
C.${map.a and map.d}
D.${map.false or map.true}
E.${map.a and map.b or map.a}
最新試題
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.
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？（）
Click the ’Select and Place’ button.Place the events in the order they occur.
Given tutorial.jsp：2.EL Tutorial3.Example 14.5.Dear ${my：nickname（user）}6.Which， when added to the web application deployment descriptor，ensures that line 5 is included verbatimin the JSP output？（）
Click the ’Select and Place’ button.Place the events in the order they occur.
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？ （）
Click the 'Select and Place' button.Place the events in the order they occur.