多项选择题

A web application contains a tag file called beta.tag in /WEB-INF/tags/alpha. A JSP page called sort.jspexists in the web application and contains only this JSP code：
1.<%@ taglib prefix="x"
2.tagdir="/WEB-INF/tags/alpha" %>
3.<x：beta />
The sort.jsp page is requested.
Which two are true？（）

A.Tag files can only be accessed using a tagdir attribute.
B.The sort.jsp page translates successfully and invokes the tag defined by beta.tag.
C.The sort.jsp page produces a translation error because a taglib directive must always have a uriattribute.
D.Tag files can only be placed in /WEB-INF/tags， and NOT in any subdirectories of /WEB- INF/tags.
E.The tagdir attribute in line 2 can be replaced by a uri attribute if a TLD referring to beta.tag is createdand added to the web application.

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单项选择题Assume a JavaBean com.example.GradedTestBean exists and has two attributes. The attribute name is oftype java.lang.String and the attribute score is of type java.lang.Integer. An array of com.example. GradedTestBean objects is exposed to the page in a request- scoped attribute called results. Additionally，an empty java.util.HashMap called resultMap is placed in the page scope. A JSP page needs to add the firstentry in results to resultMap， storing the name attribute of the bean as the key and the score attribute of thebean as the value. Which code snippet of JSTL code satisfies this requirement？（）

A.${resultMap[results[0].name] = results[0].score}
B.<c：set var="${resultMap}" key="${results[0].name}" value="${results[0].score}" />
C.<c：set var="resultMap" property="${results[0].name}"> ${results[0].value}</c：set>
D.<c：set var="resultMap" property="${results[0].name}" value="${results[0].score}" />
E.<c：set target="${resultMap}" property="${results[0].name}" value="${results[0].score}" />

多项选择题WhichtwoaretrueabouttheJSTLcoreiterationcustomtags？（）

A.It may iterate over arrays， collections， maps， and strings.
B.The body of the tag may contain EL code， but not scripting code.
C.When looping over collections， a loop status object may be used in the tag body.
D.It may iterate over a map， but only the key of the mapping may be used in the tag body.
E.When looping over integers （for example begin=’1’ end=’10’）， a loop status object may not be used inthe tag body.

单项选择题Click the Exhibit button. Assuming the tag library in the exhibit is imported with the prefix stock，which custom tag invocation outputsthe contents of the variable exposed by the quote tag？（）

A.<；stock：quote&ensp；symbol="；SUNW"；&ensp；/>；${var}
B.${var}.&ensp；<；stock：quote&ensp；symbol="；SUNW"；&ensp；/>；
C.<；stock：quote&ensp；symbol="；SUNW"；>；.&ensp；${var}.&ensp；<；/stock：quote>；
D.<；stock：quote&ensp；symbol="；SUNW"；&ensp；var="；quote"；&ensp；/>；${quote}

单项选择题A JSP page contains a taglib directive whose uri attribute has the value dbtags. Which XML element withinthe web application deployment descriptor defines the associated TLD？（）

A.<tld><uri>dbtags</uri><location>/WEB-INF/tlds/dbtags.tld</location></tld>
B.<taglib><uri>dbtags</uri><location>/WEB-INF/tlds/dbtags.tld</location>. </taglib>
C.<tld>. <tld-uri>dbtags</tld-uri>. <tld-location>/WEB-INF/tlds/dbtags.tld</tld-location> . </tld>
D.<taglib><taglib-uri>dbtags</taglib-uri><taglib-location>/WEB-INF/tlds/dbtags.tld. </taglib-location>. </taglib>

单项选择题Assume the custom tag my：errorProne always throws a java.lang.RuntimeException with the message Filenot found. An error page has been configured for this JSP page. Which option prevents the exceptionthrown by my：errorProne from invoking the error page mechanism， and outputs the message File notfound in the response？（）

A.<c：try catch="ex"><my：errorProne /></c：try>${ex.message}
B.<c：catch var="ex"><my：errorProne /></c：catch>${ex.message}
C.<c：try>. <my：errorProne />. </c：try>. <c：catch var="ex" />. ${ex.message}
D.<c：try>. <my：errorProne />. <c：catch var="ex" />. ${ex.message}. </c：try>