Determine Principle Name and Return Java.security.Principal Object | CSSLP Exam
Question
Which of the following methods determines the principle name of the current user and returns the jav a.security.Principal object in the HttpServletRequest interface?
Answers
Explanations
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A. B. C. D.java.security.Principal object contains the remote user name.
The value of the getUserPrincipal() method returns null if no user is authenticated.
Answer: C is.
The getUserPrincipal() method determines the principle name of the current user and returns the java.security.Principal object.
The incorrect.
The getRemoteUser() method returns the user name that is used for the client authentication.
The value of the getRemoteUser() method returns null if method is used to identify a caller using a java.security.Principal object.
It is not used in the HttpServletRequest interface.
The method that determines the principal name of the current user and returns the java.security.Principal object in the HttpServletRequest interface is A. getUserPrincipal().
Explanation:
In Java web applications, when a user logs in, the server creates a principal object that represents the user. The principal object contains information about the user, such as their name and security roles. The HttpServletRequest interface provides several methods to access the principal object:
A. getUserPrincipal(): This method returns a java.security.Principal object that represents the current user. If the user has not been authenticated, this method returns null.
B. isUserInRole(): This method determines if the current user has a specified security role.
C. getRemoteUser(): This method returns the name of the authenticated user.
D. getCallerPrincipal(): This method is used in EJB (Enterprise JavaBeans) applications to return the principal object of the calling client.
Therefore, option A (getUserPrincipal()) is the correct answer for this question, as it specifically returns the principal object of the current user.
