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Re: [Springframework-developer] Example classes needed
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From: Lars F. <lar...@gm...> - 2003-08-25 22:41:27
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Thomas,
unfortunately I've deleted the working petclinic.war yesterday and was not
able to
reproduce it but I'll try to look into the logs.
I've deployed the application with the following options in web.xml:
<listener>
<listener-class>com.interface21.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>cwxRootContext</servlet-name>
<servlet-class>com.interface21.web.context.ContextLoaderServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>cwx</servlet-name>
<servlet-class>com.interface21.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
Attached is the output from WebLogic and TomCat (TomCat works without
problems).
WebLogic complains about not finding the requested class in the classpath.
Hope this helps
Lars
> Lars,
>
> Loading ContextLoaderServlet as a servlet with load-on-startup set to 1
> and
> loading DispatcherServlet with load-on-startup set to 2 works for me on
> WebLogic
> 8.1 SP1. If it does not work, could you send me the web.xml and your log
> output?
>
> Also, I get the same errors deploying the Petclinic, so it does not work
> for me.
> Can you send me the petclinic war file that works with WebLogic 8.1 SP1
> so I
> can try it on my server?
>
> Thomas
>
>
> > Thomas,
> >
> > thanks for the suggestion. Tried it but it doesn't work.
> >
> > This is a serious one:
> >
> > Tested my app with Tomcat 4.1.24 and it works.
> >
> > I does NOT work with
> >
> > WebLogic 8.1 SP1, WebLogic Express SP1, WebLogic 7.0 SP3.
> >
> > What makes me wonder is that Petclinic works with WebLogic 8.1 SP1.
> >
> > Regards
> > Lars
> >
> > > Lars,
> > >
> > > I have looked into this a little bit more. What happens is that
> > > ServletContextListener.contextInitialized() method is called _after_
> the
> > > HttpServlet.init() method is called on servlets specified with
> <load-on-
> > > startup>. This causes the xxx-servlet.xml to be loaded before the
> > > applicationContext.xml is loaded, so that is why you can't reference
> > > the 'cwxDao' bean. This behavior is the opposite of what I see for
> > > Tomcat,
> > > and I'm sure the same is true for Orion and Resin that Juergen is
> using.
> > > I
> > > looked in the Servlet 2.3 specification, but I did not see anything
> > > specifying
> > > which order these methods should be called in. Maybe Juergen or Rod
> can
> > > shed
> > > some more light on this issue.
> > >
> > > You should be able to use the ContextLoaderServlet for now.
> > >
> > > Thomas
> > >
> > >
> > > > Lars,
> > > >
> > > > This might be a WebLogic specific issue - I just saw similar error
> when
> > > I
> > > > deployed my app in WebLogic 8.1.
> > > >
> > > > I will try to research this in more detail later on today or
> tomorrow.
> > > In
> > > > the
> > > > meantime try this in your web.xml
> > > >
> > > > <servlet>
> > > > <servlet-name>cwxRootContext</servlet-name>
> > > >
> > >
> <servlet-class>com.interface21.web.context.ContextLoaderServlet</servlet-
> > > class>
> > > > <load-on-startup>1</load-on-startup>
> > > > </servlet>
> > > >
> > > > <servlet>
> > > > <servlet-name>cwx</servlet-name>
> > > >
> > >
> >
>
<servlet-class>com.interface21.web.servlet.DispatcherServlet</servlet-class>
> > > > <load-on-startup>2</load-on-startup>
> > > > </servlet>
> > > >
> > > > Thomas
> > > >
> > > >
> > > >
> > > > > Thomas,
> > > > >
> > > > > attached is the web.xml.
> > > > >
> > > > > Without the ContextLoaderListener nothing would happen, not even
> > > > > the Hibernate stuff in applicationContext.xml.
> > > > >
> > > > > Thanks
> > > > > Lars
> > > > >
> > > > > > Lars,
> > > > > >
> > > > > > You did not include your web.xml, but my guess is you need to
> add a
> > > > > > ContextLoaderListener. The application context has to be loaded
> > > first,
> > > > > > and the
> > > > > > error messages indicates that the bean 'cwxDao' can't be found,
> so
> > > it
> > > > > > looks like
> > > > > > that did not happen.
> > > > > >
> > > > > > web.xml:
> > > > > >
> > > > > > <web-app>
> > > > > >
> > > > > > <!--
> > > > > > - Loads the root application context of this web app at
> startup,
> > > > > > - by default from "/WEB-INF/applicationContext.xml".
> > > > > > -->
> > > > > > <listener>
> > > > > > <listener-class>
> > > > > > com.interface21.web.context.ContextLoaderListener
> > > > > > </listener-class>
> > > > > > </listener>
> > > > > >
> > > > > > <!-- more definitions -->
> > > > > >
> > > > > > </web-app>
> > > > > >
> > > > > >
> > > > > > Hope this helps.
> > > > > >
> > > > > > Thomas
> > > > > >
> > > > > >
> > > > > >
> > > > > > > Hi all Spring experts,
> > > > > > >
> > > > > > > can anyone provide me the example classes mentioned in several
> > > > skeletons
> > > > > >
> > > > > > > (e.g. exampleController, exampleBusinessObject,
> > > > exampleDataAccessObject)
> > > > > > ?
> > > > > > >
> > > > > > > The two provided sample applications don't reflect the
> skeletons
> > > very
> > > > > > well.
> > > > > > > There should be one 'big' application showing all the stuff
> and
> > > many
> > > > > > small
> > > > > > > ones to show single options (like in WebWork 1).
> > > > > > >
> > > > > > > I've defined the following in applicationContext.xml (and it
> > > works):
> > > > > > >
> > > > > > > <bean id="cwxDao" class="example.dao.CwxDaoHibernate">
> > > > > > > <property name="sessionFactory"><ref
> > > > > > bean="cwxSessionFactory"/></property>
> > > > > > > </bean>
> > > > > > >
> > > > > > > When defining
> > > > > > >
> > > > > > > (cwx-servlet.xml)
> > > > > > >
> > > > > > > <!-- Controller for the initial "Hello" page -->
> > > > > > > <bean id="cwxController" class="example.web.CwxController">
> > > > > > > <property name="cwxDao"><ref external="cwxDao"/></property>
> > > > > > > </bean>
> > > > > > >
> > > > > > > (CwxController)
> > > > > > >
> > > > > > > private CwxDao cwxDao;
> > > > > > >
> > > > > > > public void setCwxDao(CwxDao cwxDao) {
> > > > > > > this.cwxDao = cwxDao;
> > > > > > > }
> > > > > > >
> > > > > > >
> > > > > > > I always get
> > > > > > >
> > > > > > > ERROR [com.interface21.web.servlet.DispatcherServlet] -
> <Servlet
> > > with
> > > > > > name
> > > > > > > 'cwx' : initialization error>
> > > > > > > com.interface21.beans.factory.NoSuchBeanDefinitionException:
> No
> > > bean
> > > > > > named
> > > > > > > [cwxDao] is defined {class
> > > > > > com.interface21.beans.factory.xml.XmlBeanFactory:
> > > > > > > defined beans
> > > [messageSource,viewResolver,urlMapping,cwxController]}
> > > > > > >
> > > > > > > This is the second time I get almost useless error messages.
> This
> > > is
> > > > one
> > > > > > > point where EJBs are far ahead (
> > > > > > > there is almost always an error message telling you what
> excactly
> > > is
> > > > > > > wrong).
> > > > > > >
> > > > > > > Another (dumb) question:
> > > > > > >
> > > > > > > What is the difference between a DAO *implementation* and a
> > > business
> > > > > > object
> > > > > > > and where does
> > > > > > > e. g. Petclinic reflect this ? I'm asking this because of the
> > > > diiference
> > > > > > > between the skeletons and the
> > > > > > > sample applications. The skeletons provide a DAO and a
> Business
> > > Object
> > > > > > using
> > > > > > > the DAO definition,
> > > > > > > Petclinic does not. The samples should be as close as possible
> to
> > > the
> > > > > > > skeletons or the skeletons should
> > > > > > > at least provide the java classes (shouldn't be too hard).
> > > > > > >
> > > > > > > Thanks in advance
> > > > > > > Lars
> > > > > > >
> > > > > > >
> > > > > > >
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