JBridge: Certification Question Of The Day

Suppose the following servlet mapping is set up for a web application called “music”:

<servlet-mapping>
	<servlet-name>PlayPiece</servlet-name>
	<url-pattern>/PlayPiece/*</url-pattern>
</servlet-mapping>

The Answer

B and C are the correct answers.
A is almost right, but the context path would have to begin with a forward slash (thus: ‘/music’).
D is wrong on two counts. The real path would include ‘requiem’ at the end (the path information is not stripped off when finding the real path). Furthermore, the real path information would give the full path within the file system where the resource ‘PlayPiece\requiem’ is located (e.g. ‘C:\Java\jakarta-tomcat-4.1.18\webapps\music\PlayPiece\requiem’ given a Windows directory structure). Although ‘//myHost/music/…’ could represent the beginning of a true file path on the web server, it’s both insecure and very unlikely.