Class RedeployableActionServlet

  extended by javax.servlet.GenericServlet
      extended by javax.servlet.http.HttpServlet
          extended by org.apache.struts.action.ActionServlet
              extended by org.apache.struts.tiles.RedeployableActionServlet
All Implemented Interfaces:
Serializable, Servlet, ServletConfig

public class RedeployableActionServlet
extends ActionServlet

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.

For background discussion see

$Rev: 481833 $ $Date: 2006-12-03 11:32:52 -0600 (Sun, 03 Dec 2006) $
See Also:
Serialized Form

Field Summary
Fields inherited from class org.apache.struts.action.ActionServlet
chainConfig, config, configDigester, convertNull, internal, internalName, log, registrations, servletMapping, servletName
Constructor Summary
Method Summary
protected  RequestProcessor getRequestProcessor(ModuleConfig config)
          Look up and return the RequestProcessor responsible for the specified module, creating a new one if necessary.
Methods inherited from class org.apache.struts.action.ActionServlet
addServletMapping, destroy, destroyConfigDigester, destroyInternal, destroyModules, doGet, doPost, getInternal, getModuleConfig, init, initChain, initConfigDigester, initInternal, initModuleActions, initModuleConfig, initModuleConfigFactory, initModuleExceptionConfigs, initModuleFormBeans, initModuleForwards, initModuleMessageResources, initModulePlugIns, initModulePrefixes, initOther, initServlet, parseModuleConfigFile, parseModuleConfigFile, process, processActionConfigClass, processActionConfigExtension, processExceptionConfigClass, processExceptionExtension, processFormBeanConfigClass, processFormBeanExtension, processForwardConfigClass, processForwardExtension, splitAndResolvePaths
Methods inherited from class javax.servlet.http.HttpServlet
doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service
Methods inherited from class javax.servlet.GenericServlet
getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail


public RedeployableActionServlet()
Method Detail


protected RequestProcessor getRequestProcessor(ModuleConfig config)
                                        throws ServletException
Description copied from class: ActionServlet

Look up and return the RequestProcessor responsible for the specified module, creating a new one if necessary.

getRequestProcessor in class ActionServlet
config - The module configuration for which to acquire and return a RequestProcessor.
The RequestProcessor responsible for the specified module,
ServletException - If we cannot instantiate a RequestProcessor instance a UnavailableException is thrown, meaning your application is not loaded and will not be available.

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