java - UnsupportedOperationException JSF - webLogic 11g -

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i'm developing web application , i'm using following versions:

  • spring-core 3.1.3
  • spring-webmvc 3.1.3
  • spring-webflow 2.3.1
  • spring-faces 2.3.1
  • jsf-api 2.0.9
  • jsf-impl 2.0.9
  • java 1.6

the application deployed in weblogic server 10.3.6. randomly , exception shown below thrown while navigating through application.

java.lang.unsupportedoperationexception     @ javax.faces.context.facescontext.getpartialviewcontext(facescontext.java:165)     @ org.springframework.faces.webflow.jsfajaxhandler.isajaxrequestinternal(jsfajaxhandler.java:55)     @ org.springframework.js.ajax.abstractajaxhandler.isajaxrequest(abstractajaxhandler.java:19)     @ org.springframework.webflow.mvc.servlet.flowhandleradapter.createservletexternalcontext(flowhandleradapter.java:216)     @ org.springframework.webflow.mvc.servlet.flowhandleradapter.handle(flowhandleradapter.java:192)     @ org.springframework.faces.webflow.jsfflowhandleradapter.handle(jsfflowhandleradapter.java:48)     @ org.springframework.web.servlet.dispatcherservlet.dodispatch(dispatcherservlet.java:923)     @ org.springframework.web.servlet.dispatcherservlet.doservice(dispatcherservlet.java:852)     @ org.springframework.web.servlet.frameworkservlet.processrequest(frameworkservlet.java:882)     @ org.springframework.web.servlet.frameworkservlet.doget(frameworkservlet.java:778)     @ javax.servlet.http.httpservlet.service(httpservlet.java:707)     @ javax.servlet.http.httpservlet.service(httpservlet.java:820)     @ weblogic.servlet.internal.stubsecurityhelper$servletserviceaction.run(stubsecurityhelper.java:227)     @ weblogic.servlet.internal.stubsecurityhelper.invokeservlet(stubsecurityhelper.java:125)     @ weblogic.servlet.internal.servletstubimpl.execute(servletstubimpl.java:301)     @ weblogic.servlet.internal.tailfilter.dofilter(tailfilter.java:26)     @ weblogic.servlet.internal.filterchainimpl.dofilter(filterchainimpl.java:56)     @ com.jeveris.web.core.filter.log.performancelogfilter.dofilter(performancelogfilter.java:59)     @ weblogic.servlet.internal.filterchainimpl.dofilter(filterchainimpl.java:56)     @ weblogic.servlet.internal.requesteventsfilter.dofilter(requesteventsfilter.java:27)     @ weblogic.servlet.internal.filterchainimpl.dofilter(filterchainimpl.java:56)     @ weblogic.servlet.internal.webappservletcontext$servletinvocationaction.wraprun(webappservletcontext.java:3730)     @ weblogic.servlet.internal.webappservletcontext$servletinvocationaction.run(webappservletcontext.java:3696)     @ weblogic.security.acl.internal.authenticatedsubject.doas(authenticatedsubject.java:321)     @ weblogic.security.service.securitymanager.runas(securitymanager.java:120)     @ weblogic.servlet.internal.webappservletcontext.securedexecute(webappservletcontext.java:2273)     @ weblogic.servlet.internal.webappservletcontext.execute(webappservletcontext.java:2179)     @ weblogic.servlet.internal.servletrequestimpl.run(servletrequestimpl.java:1490)     @ weblogic.work.executethread.execute(executethread.java:256)     @ weblogic.work.executethread.run(executethread.java:221)

an example of bean:

@managedbean(name = "bean") @sessionscoped public class bean implements serializable{  ... }

an example of flow:

<?xml version="1.0" encoding="utf-8"?>  <flow xmlns="http://www.springframework.org/schema/webflow"     xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"     xsi:schemalocation="http://www.springframework.org/schema/webflow         http://www.springframework.org/schema/webflow/spring-webflow-2.0.xsd"     parent="parent-flow" start-state="searchdashboardstate">  <on-start>               <evaluate expression="dashboardcontroller.clean(flowrequestcontext)" /> </on-start>    <view-state id="searchdashboardstate" view="../views/dashboard/searchdashboardview.xhtml">      <transition on="search" to="searchdashboardstate">           <evaluate expression="dashboardcontroller.find(flowrequestcontext)" result="flowscope.dashboarddata" result-type="datamodel"/>     </transition>  </view-state>


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