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多项选择题X 纠错

Which two statements are true about the security-related tags in a valid Java EE deployment descriptor？（）

A.Every tag must have at least one tag.
B.A tag can have many tags.
C.A given tag can apply to only one tag.
D.A given tag can contain from zero to many tags.
E.It is possible to construct a valid tag such that，for a given resource，no user rolescan access that resource.

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单项选择题

You web application uses a lot of Java enumerated types in the domain model of the application. Built intoeach enum type is a method， getDisplay（）， which returns a localized， user-oriented string. There are manyuses for presenting enums within the web application， so your manager has asked you to create a customtag that iterates over the set of enum values and processes the body of the tag once for each value； settingthe value into a page- scoped attribute called， enumValue. Here is an example of how this tag is used： 10.

A.
B.
C.
D.

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多项选择题

Which two are true concerning the objects available to developers creating tag files？（）

A.The session object must be declared explicitly.
B.The request and response objects are available implicitly.
C.The output stream is available through the implicit outStream object.
D.The servlet context is available through the implicit servletContext object.
E.The JspContext for the tag file is available through the implicit jspContext object.

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单项选择题

You are creating a content management system （CMS） with a web application front-end. The JSP thatdisplays a given document in the CMS has the following general structure：
1. <%-- tag declaration --%>
2. <t：document>
...
11. <t：paragraph>... <t：citation docID=’xyz’ /> ...</t：paragraph> ...
99. </t：document>
The citation tag must store information in the document tag for the document tag to generate a referencesection at the end of the generated web page. The document tag handler follows the Classic tag model andthe citation tag handler follows the Simple tag model. Furthermore， the citation tag could also be embeddedin other custom tags that could have either the Classic or Simple tag handler model.
Which tag handlermethod allows the citation tag to access the document tag？（）

A.public void doTag（） {JspTag docTag = findAncestorWithClass（this， DocumentTag.class）；（（DocumentTag）docTag）.addCitation（this.docID）；}
B.public void doStartTag（） {JspTag docTag = findAncestorWithClass（this， DocumentTag.class）；（（DocumentTag）docTag）.addCitation（this.docID）；}
C.public void doTag（） {. Tag docTag = findAncestor（this， DocumentTag.class）； . （（DocumentTag）docTag）.addCitation（this.docID）；. }
D.public void doStartTag（） {. Tag docTag = findAncestor（this， DocumentTag.class）； . （（DocumentTag）docTag）.addCitation（this.docID）；. }

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多项选择题

Given：
3.public class MyTagHandler extends TagSupport {
4.public int doStartTag（） {
5.// insert code here
6.// return an int
7.}
8.// more code here
...
18.}
There is a single attribute foo in the session scope.
Which three code fragments，inserted independently atline 5，return the value of the attribute？（）

A.Object o = pageContext.getAttribute（"foo"）；
B.Object o = pageContext.findAttribute（"foo"）；
C.Object o = pageContext.getAttribute（"foo"，PageContext.SESSION_SCOPE）；
D.HttpSession s = pageContext.getSession（）；Object o = s.getAttribute（"foo"）；

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单项选择题

You have built your own light-weight templating mechanism. Your servlets， which handle each request，dispatch the request to one of a small set of template JSP pages. Each template JSP controls the layout ofthe view by inserting the header， body， and footer elements into specific locations within the template page.The URLs for these three elements are stored in request scoped variables called， headerURL， bodyURL，and footerURL， respectively. These attribute names are never used for other purposes.
Which JSP codesnippet should be used in the template JSP to insert the JSP content for the body of the page？（）

A.<jsp：insert page=’${bodyURL}’ />
B.<jsp：insert file=’${bodyURL}’ />
C.<jsp：include page=’${bodyURL}’ />
D.<jsp：include file=’${bodyURL}’ />
E.<jsp：insert page=’<%= bodyURL %>’ />

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多项选择题

Click the Exhibit button.

A servlet sets a session-scoped attribute product with an instance of com.example.Product and forwards toa JSP.
Which two output the name of the product in the response？（）

A.${product.name}
B.<jsp：getProperty name="product" property="name" />
C.<jsp：useBean id="com.example.Product" /><%= product.getName（） %>
D.<jsp：getProperty name="product" class="com.example.Product" property="name" />

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单项选择题

Click the Exhibit button.

A session-scoped attribute， product， is stored by a servlet. That servlet then forwards to a JSP page. Thisattribute holds an instance of the com.example.Product class with a name property of "The Matrix" andprice property of 39.95. Given the JSP page code snippet： 1. 2.

3. 4.<%=> costs <%=> <%=><%=> What is the response output of this JSPpage code snippet？（）

A.Default costs 0.0
B.Default costs 49.95
C.Default costs 39.95
D.The Matrix costs 0.0
E.The Matrix costs 49.95

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多项选择题

Click the Exhibit button.

Assume the product attribute does NOT yet exist in any scope.
Which two create an instance of com.example.Product and initialize the name and price properties to the name and price request parameters？（）

A.
B.
C.
D.

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单项选择题

Which defines the welcome files in a web application deployment descriptor？（）

A.
B.
C.
D.

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单项选择题

Given this fragment from a Java EE deployment descriptor：
341.<error-page>
342.<exception-type>java.lang.Throwable</exception-type>
343.<location>/mainError.jsp</location>
344.</error-page>
345.<error-page>
346.<exception-type>java.lang.ClassCastException</exception-type>
347.<location>/castError.jsp</location>
348.</error-page>
If the web application associated with the fragment above throws a ClassCastException.Which statement is true？（）

A.The deployment descriptor is invalid.
B.The container invokes mainError.jsp.
C.The container invokes castError.jsp.
D.Neither mainError.jsp nor castError.jsp is invoked.

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