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|ID||Category||Severity||Reproducibility||Date Submitted||Last Update|
|0004248||[Resin]||minor||always||10-07-10 14:52||11-10-10 09:59|
|Summary||0004248: wrong classloader in forwarded webapp|
(rep by jessicay on forums)
I am upgrading from resin 3.2.1 to resin 4.0.10, and noticed some unexpected behaviour change about session attribute in request forwarding.
I was trying to do this:
1. There are webapp_a and webapp_b
2. Request is forwarded from webapp_a to webapp_b
3. In webapp_b,
the request is first processed by TestServlet, then the code does the following to add a sessionAttribute and forward to an hello.jsp page located under webapp_b
SomeObj obj = new SomeObj(); // SomeObj does not implement java.io.Serializable
HttpSession session = request.getSession();
in hello.jsp, we retrive the object from the session attribute and do some further processing.
SomeObj sObj = (SomeObj)session.getAttribute("test.attribute.name ");
resin 3.2.1 works fine, whereas resin 4.0.10 throws ClassCastException when the the request is forwarded although the class type is correct and the object is original.
I think this is related to ClassLoader.
To find out, I printed out the ClassLoader used in hello.jsp and found:
resin 3.2.1 used (DynamicClassLoader[SimpleLoader[C:/resin-3.2.1/webapps/webapp_b/WEB-INF/work]])
resin 4.0.10 used (DynamicClassLoader[SimpleLoader[C:/resin-4.0.10/webapps/webapp_a/WEB-INF/work]])
Please note the ClassLoader difference in resin 3.2.1 and resin 4.0.10, resin 4.0.10 ClassLoader has webapp_a although it is in webapp_b.
Once I made SomeObj implements java.io.Serializable, resin 4.0.10 would work, however, this should not be needed as the session attribute object is retrieved within the same webapp.
BTW, this is a single server environment on windows. What else can I do to make resin 4.0.10 behaves the same way as resin 3.2.1 regarding this issue?
in step 2, I did:
RequestDispatcher rd = servletContext.getContext("/webapp_b").getRequestDispatcher("/servlet/TestServlet");
|We're seeing this issue as well.|
|10-07-10 14:52||emil||New Issue|
|11-02-10 13:15||nicolai||Issue Monitored: nicolai|
|11-08-10 11:15||nicolai||Note Added: 0004822|
|11-10-10 09:59||ferg||Note Added: 0004827|
|11-10-10 09:59||ferg||Assigned To||=> ferg|
|11-10-10 09:59||ferg||Status||new => closed|
|11-10-10 09:59||ferg||Resolution||open => fixed|
|11-10-10 09:59||ferg||Fixed in Version||=> 4.0.14|
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