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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=16680 Internal Server Error on HttpSession.setAttribute() Summary: Internal Server Error on HttpSession.setAttribute() Product: Tomcat 4 Version: 4.1.18 Platform: PC OS/Version: Windows XP Status: NEW Severity: Major Priority: Other Component: Servlet & JSP API AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] 4.1.18 of Tomact, HttpSession.setAttribute throws the Exception, java.io.NotSerializableException, and displays an "Internal Server Error" on the generated web page, when the saved session attribute is not serializeable. In version 3 of Tomcat, it was not required that a saved attribute be serializable. Further, there are cases where the saved object may be very complex and difficult to serialize. While necessary for J2EE clustering, a session attribute being serializable should not be hard requirement for all cases -- or at least handled more gracefully and documented that this is a requirement. -George --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]