Which path is required to be present within a WAR file？（）

单项选择题After a merger with another small business， your company has inherited a legacy WAR file but the originalsource files were lost. After reading the documentation of that web application，you discover that the WARfile contains a useful tag library that you want to reuse in your own webapp packaged as a WAR file. What do you need to do to reuse this tag library？（）

A.Simply rename the legacy WAR file as a JAR file and place it in your webapp’s library directory.
B.Unpack the legacy WAR file， move the TLD file to the META-INF directory， repackage the whole thingas a JAR file， and place that JAR file in your webapp’s library directory.
C.Unpack the legacy WAR file， move the TLD file to the META-INF directory， move the class files to thetop-level directory， repackage the whole thing as a JAR file， and place that JAR file in your webapp’slibrary directory.
D.Unpack the legacy WAR file， move the TLD file to the META-INF directory， move the class files to the top-level directory， repackage the WAR， and place that WAR file in your webapp’s WEB-INF directory.

多项选择题Whichtwofromthewebapplicationdeploymentdescriptorarevalid？（）

A.
B.
C.
D.

多项选择题You want to create a valid directory structure for your Java EE web application， and you want to put yourweb application into a WAR file called MyApp.war. Which two are true about the WAR file？（）

A.At deploy time， Java EE containers add a directory called META-INF directly into the MyApp directory.
B.At deploy time， Java EE containers add a file called MANIFEST.MF directly into the MyApp directory.
C.It can instruct your Java EE container to verify， at deploy time， whether you have properly configured your application’s classes.
D.At deploy time， Java EE containers add a directory call META-WAR directly into the MyApp directory.

单项选择题Servlet A forwarded a request to servlet B using the forward method of RequestDispatcher. What attributein B’s request object contains the URI of the original request received by servlet A？（）

A.REQUEST_URI
B.javax.servlet.forward.request_uri
C.javax.servlet.forward.REQUEST_URI
D.javax.servlet.request_dispatcher.request_uri
E.javax.servlet.request_dispatcher.REQUEST_URI

单项选择题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？（）

A.chain.forward（request， response）；
B.chain.doFilter（request， response）；
C.request.forward（request， response）；
D.request.doFilter（request， response）；