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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=26322 WebLogic hot-deploy breaks Tiles; TilesRequestProcessor is not serializable Summary: WebLogic hot-deploy breaks Tiles; TilesRequestProcessor is not serializable Product: Struts Version: 1.1 Final Platform: All OS/Version: Other Status: NEW Severity: Normal Priority: Other Component: Tiles framework AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] Please refer to the following documents for background information about this issue: http://www.mail-archive.com/[EMAIL PROTECTED]/msg53294.html http://marc.theaimsgroup.com/?l=struts-user&m=105203952331713 http://marc.theaimsgroup.com/?l=struts-user&m=105188532730261 http://marc.theaimsgroup.com/?l=struts-user&m=105268268519113 To summarize: WebLogic (at least v6 and v7) attempts to serialize the TilesRequestProcessor when re-deploying the Webapp in development mode. The TilesRequestProcessor is not serializable, and loses the Tiles definitions. This results in NullPointerException and/or NotSerializableException when using the app after automatic redeploy. This bug report proposes a workaround for this problem, in the hope it will help others and maybe motivate an actual fix. The attached class extends the Struts Action servlet and fixes the problem by reloading the Tiles definitions when they have disappeared. /** * In development mode, WebLogic 7.0 automatically redeploys servlets by creating a new classloader, * then propagates the servlet context to the new servlet classes by serializing it. * For some reason unknown to * me, this serialization operation drops the Tiles definitions. The re- deployed servlets fail * with a NPE when looking up any Tiles definition. This basically breaks automatic redeployment. * <p> * This class works around this issue by detecting when the request processor (which holds the * Tiles definitions) was serialized, and re-creating a new instance when that is the case. * The Tiles defs are then reloaded as well. This should only happen when the servlet context * was serialized, ie. servlets were redeployed. * * @author Renaud Waldura */ --- web.xml --- <servlet> <servlet-name>action</servlet-name> <servlet-class>com.aravo.framework.ui.struts.action.WebLogicRedeployableActi onServlet</servlet-class> <init-param> <param-name>config</param-name> <param-value>/WEB-INF/struts-config.xml</param-value> </init-param> <init-param> <param-name>debug</param-name> <param-value>0</param-value> </init-param> <init-param> <param-name>detail</param-name> <param-value>0</param-value> </init-param> <load-on-startup>2</load-on-startup> </servlet> --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
