----- Original Message -----
From: "Leffingwell, Jonathan R CTR FRCSE, JAX 7.2.2"
<[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, June 12, 2008 4:44 PM
Subject: getAttribute(null)?
I have the following code that worked in Tomcat 5.0, but doesn't work in
Tomcat 5.5.26:
String formName = mapping.getAttribute(); // mapping is a variable of
type ActionMapping. In this scenario, formName is null.
if (null != session.getAttribute(formName)) {
session.removeAttribute(formName);
}
formName is null. In Tomcat 5.0.x, no exception was thrown and
processing continued (as if passing a null argument to getAttribute
simply returned NULL). In Tomcat 5.5.26, a ServletException is thrown
(with a NullPointerException).
I know how to code a work-around (and have done so), but is this
considered a bug in Tomcat?
======TEST======
This code
HttpSession session = request.getSession(true);
Object obj = session.getAttribute(null);
Raises this exception
java.lang.NullPointerException
java.util.Hashtable.get(Unknown Source)
org.apache.catalina.session.StandardSession.getAttribute(StandardSession.java:1024)
org.apache.catalina.session.StandardSessionFacade.getAttribute(StandardSessionFacade.java:110)
NewServlet.processRequest(NewServlet.java:29)
NewServlet.doGet(NewServlet.java:52)
javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)The Hash Table is
throwing it...I'm too young to remember 5 ;)But you maybe right, its possible
that the internals used to use a Vector...and when Java introduced new
collections, it changed.You may have spotted a little regression issue, but
probably something thathasnt caught too many people.
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