A.A filter must implement the destroy method.
B.A filter must implement the doFilter method.
C.A servlet may have multiple filters associated with it.
D.A servlet that is to have a filter applied to it must implement the javax.servlet.FilterChain interface.
E.A filter that is part of a filter chain passes control to the next filter in the chain by invoking the FilterChain.forward method.
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All of your JSPs need to have a link that permits users to email the web master. This web application islicensed to many small businesses， each of which have a different email address for the web master. Youhave decided to use a context parameter that you specify in the deployment descriptor， like this：
42.<context-param>
43.<param-name>webmasterEmail</param-name>
44.<param-value>master@example.com</param-value>
45.</context-param>
Which JSP code snippet creates this email link？（）
A.<a href=’mailto：${contextParam.webmasterEmail}’>contact us</a>
B.<a href=’mailto：${applicationScope.webmasterEmail}’>contact us</a>
C.<a href=’mailto：${contextInitParam.webmasterEmail}’>contact us</a>
D.<a href=’mailto：${initParam.webmasterEmail}’>contact us</a>
A.<%@ page mimeType="text/plain" %>
B.<%@ page contentType="text/plain" %>
C.<%@ page pageEncoding="text/plain" %>
D.<%@ page contentEncoding="text/plain" %>
E.<% response.setEncoding（"text/plain"）； %>
You are building your own layout mechanism by including dynamic content for the page’s header and footersections. The footer is always static， but the header generates the <title> tag that requires the page name tobe specified dynamically when the header is imported.
Which JSP code snippet performs the import of theheader content？（）
A.<jsp：include page=’/WEB-INF/jsp/header.jsp’><jsp：param name=’pageName’ value=’Welcome Page’ /> </jsp：include>
B.<jsp：import page=’/WEB-INF/jsp/header.jsp’><jsp：param name=’pageName’ value=’Welcome Page’ /> </jsp：import>
C.<jsp：include page=’/WEB-INF/jsp/header.jsp’><jsp：attribute name=’pageName’ value=’Welcome Page’ /> . </jsp：include>
D.<jsp：import page=’/WEB-INF/jsp/header.jsp’>. <jsp：attribute name=’pageName’ value=’Welcome Page’ /> . </jsp：import>
A.It avoids initialization on the first request.
B.It provides the ability to debug runtime errors in the application.
C.It provides better performance on the first request for the JSP page.
D.It avoids execution of the _jspService method on the first request.
最新試題
Which element of a web application deployment descriptor element is required？（）
Which ensures that a JSP response is of type "text/plain"？（）
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.
You are building your own layout mechanism by including dynamic content for the page’s header and footersections. The footer is always static， but the header generates the <title> tag that requires the page name tobe specified dynamically when the header is imported.Which JSP code snippet performs the import of theheader content？（）
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.
Click the 'Select and Place' button.Place the events in the order they occur.
A web application allows the HTML title banner to be set using a servlet context initialization parametercalled titleStr.Which two properly set the title in this scenario？（）
Given a Filter class definition with this method：21.public void doFilter（ServletRequest request，22.ServletResponse response，23.FilterChain chain）24.throws ServletException， IOException {25.// insert code here26.}Which should you insert at line 25 to properly invoke the next filter in the chain， or the target servlet if thereare no more filters？（）