struts-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Samuel Robert <samuelrobert....@gmail.com>
Subject Re: [Struts2] session variable empty in the JSP
Date Mon, 27 Feb 2012 17:20:24 GMT
I am using Spring:
*<bean id="context" class="my.bean.SessionBean" scope="session"/>*

In the action:
*@Autowired
private SessionBean context;*

I can manipulate the context object in the action, fill it with a list of
profiles.


In the JSP, tags like the following fail (the first time only):
<s:select name="profile" id="profile" list="%{#session.context.profiles}"/>

The application uses Spring Security and Tiles with the struts-tiles
plugin.
The jsp is included via Tiles: <result type="tiles">monitor</result>

I am testing with Jetty.

The stack trace:
Caused by: tag 'select', field 'list', name 'profile': The requested list
key '%{#session.context.profiles}' could not be resolved as a
collection/array/map/enu
meration/iterator type. Example: people or people.{name} - [unknown
location]
        at
org.apache.struts2.components.Component.fieldError(Component.java:237)
        at
org.apache.struts2.components.Component.findValue(Component.java:358)
        at
org.apache.struts2.components.ListUIBean.evaluateExtraParams(ListUIBean.java:80)
        at
org.apache.struts2.components.Select.evaluateExtraParams(Select.java:105)
        at
org.apache.struts2.components.UIBean.evaluateParams(UIBean.java:856)
        at org.apache.struts2.components.UIBean.end(UIBean.java:510)
        at
org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(ComponentTagSupport.java:42)
        at
org.apache.jsp.jsp.monitor.inc_005fheader_005fmonitoring_jsp._jspx_meth_s_select_0(org.apache.jsp.jsp.monitor.inc_005fheader_005fmonitoring_jsp:367)
        at
org.apache.jsp.jsp.monitor.inc_005fheader_005fmonitoring_jsp._jspx_meth_s_form_0(org.apache.jsp.jsp.monitor.inc_005fheader_005fmonitoring_jsp:313)
        at
org.apache.jsp.jsp.monitor.inc_005fheader_005fmonitoring_jsp._jspx_meth_s_if_0(org.apache.jsp.jsp.monitor.inc_005fheader_005fmonitoring_jsp:262)
        at
org.apache.jsp.jsp.monitor.inc_005fheader_005fmonitoring_jsp._jspService(org.apache.jsp.jsp.monitor.inc_005fheader_005fmonitoring_jsp:118)
        at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:109)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:389)
        at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:486)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:380)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
        at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
        at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:366)
        at
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:99)
        at
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
        at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
        at
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97)
        at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
        at
org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:60)
        at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
        at
org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78)
        at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
        at
org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
        at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
        at
org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35)
        at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
        at
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187)
        at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
        at
org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
        at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
        at
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:57)
        at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
        at
org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:109)
        at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
        at
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:167)
        at
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
        at
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
        at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
        at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
        at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
        at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
        at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
        at
org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
        at org.mortbay.jetty.servlet.Dispatcher.include(Dispatcher.java:192)
        at
org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:1013)
        at
org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:698)
        at
org.apache.tiles.jsp.context.JspTilesRequestContext.include(JspTilesRequestContext.java:80)
        ... 132 more


On 27 February 2012 16:00, Gabriel Belingueres <belingueres@gmail.com>wrote:

> Post the code in which you actually set the attribute in the session scope.
>
> 2012/2/27 Samuel Robert <samuelrobert.job@gmail.com>:
> > Hi,
> >
> > I faced few days ago a problem with the session variable in the JSP. I
> > posted the problem here but did not get any solution:
> >
> http://stackoverflow.com/questions/9381991/session-variable-empty-in-the-jsp-on-first-access-in-a-struts2-spring-applicatio
> >
> > Perhaps some of you have an idea.
> >
> > Basically the session variable in the JSP is empty on the first call to
> my
> > action (when the session gets initialized).
> > That means that my JSP fails to retrieve any information from the session
> > in the Struts tags on the first display.
> > From the second call it is OK.
> >
> > I have checked that the session is correctly initialized in the JSP. The
> > problem comes only with the session variable in the struts tags.
> >
> > <%
> System.out.println(((my.bean.SessionBean)session.getAttribute("context")).getProfiles());
> > %> => OK
> >
> > <s:property value="%{#session}"/> => KO (empty)
> >
> > ${session} => KO
> >
> >
> > I solved it by adding an additional redirectAction on the first access
> > (when I detect that it is a new session).
> > But I wonder why I get such a problem, which I never had before.
> >
> > Thanks,
> > Samuel
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@struts.apache.org
> For additional commands, e-mail: user-help@struts.apache.org
>
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message