Flex 2.0 can not load MessageBrokerServlet

Posted At : April 18, 2006 1:54 PM
Related Categories: Flex

I have been playing around with some of the Flex 2.0 examples for ColdFusion. I am trying to get the cfcontact example working and I get the following error when I try to edit the flex-data-service.xml file.

error Could not pre-load servlet: MessageBrokerServlet

I made the following two changes to this file;

<adapters>
<adapter-definition id="actionscript" class="flex.data.adapters.ASObjectAdapter" default="true"/>
<adapter-definition id="java-dao" class="flex.data.adapters.JavaAdapter"/>
<adapter-definition id="hibernate" class="flex.data.adapters.HibernateAdapter"/>
<!-- Uncomment this if you want to use the ColdFusion Data Services Adapter -->
<adapter-definition id="coldfusion-dao" class="coldfusion.flex.CFDataServicesAdapter"/>

</adapters>

I also added the destination for the cfcontact;

<destination id="cfcontact">
<adapter ref="coldfusion-dao"/>
<channels>
<channel ref="cf-dataservice-rtmp" />
</channels>
<properties>
<metadata>
<identity property="contactId"/>
</metadata>
<network>
<session-timeout>0</session-timeout>
<paging enabled="false" size="10"/>
<throttle-inbound policy="ERROR" max-frequency="500"/>
<throttle-outbound policy="REPLACE" max-frequency="500"/>
</network>
<server>
<assembler>

<component>samples.contact.ContactAssembler</component>

<hostname>localhost</hostname>

<access>

<method-access-level>remote</method-access-level>
</access>

<property-case>

<force-cfc-lowercase>false</force-cfc-lowercase>

<force-query-lowercase>false</force-query-lowercase>

<force-struct-lowercase>false</force-struct-lowercase>
</property-case>
</assembler>


<fill-method>
<name>fill</name>
</fill-method>

<sync-method>
<name>sync</name>
</sync-method>

<get-method>
<name>get</name>
</get-method>

<count-method>
<name>count</name>
</count-method>
</server>
</properties>
</destination>

The only thing I can think of that might be causing a problem is that I am running CF mystic under IIS and Jrun. I have standalone version of jrun Flex data services running on port 8700.

Has anyone found a fix for this yet?

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Mike Rankin's Gravatar I'm still very new at working with CF/Flex, so I can only shed a little light on your issue instead of solving it. I can tell you that I have the exact same setup that you have described and this sample app is running for me.

I have the multi-server developer edition of CF running and going through IIS. I also have FDS on port 8700.

At least, that might help you look in other areas to find the issue.
# Posted By Mike Rankin | 4/18/06 3:27 PM
David Fekke's Gravatar Mike,

Thank you for your Flex experiences. I am running ColdFusion MX 7 under JRun4, but I am running an older version of ColdFusion 6.1 as a Standalone server. Both are setup so I can run them under IIS, but I am just running 7.01. I have the Flex with integrated JRun running, which is a separate version of JRun. I think that might be causing the problem.

Thank you,
David.
# Posted By David Fekke | 4/18/06 4:59 PM
Bernie Lapierre's Gravatar Did you find the reason for this?
I am getting this error starting up my JRun server.
07/13 13:46:00 error Could not pre-load servlet: MessageBrokerServlet
[1]org.apache.commons.logging.LogConfigurationException: org.apache.commons.logg
ing.LogConfigurationException: org.apache.commons.logging.LogConfigurationExcept
ion: Invalid class loader hierarchy. You have more than one version of 'org.apa
che.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.co
mmons.logging.LogConfigurationException: Invalid class loader hierarchy. You ha
ve more than one version of 'org.apache.commons.logging.Log' visible, which is n
ot allowed.) (Caused by org.apache.commons.logging.LogConfigurationException: or
g.apache.commons.logging.LogConfigurationException: Invalid class loader hierarc
hy. You have more than one version of 'org.apache.commons.logging.Log' visible,
which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationExc
eption: Invalid class loader hierarchy. You have more than one version of 'org.
apache.commons.logging.Log' visible, which is not allowed.))
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactory
Impl.java:543)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactory
Impl.java:235)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactory
Impl.java:209)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
at org.apache.commons.httpclient.params.DefaultHttpParams.<clinit>(Defau
ltHttpParams.java:53)
at flex.messaging.services.http.HTTPProxyAdapter.<init>(HTTPProxyAdapter
.java:111)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Sou
rce)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at flex.messaging.util.ClassUtil.createDefaultInstance(ClassUtil.java:71
)
at flex.messaging.Destination.createAdapter(Destination.java:277)
at flex.messaging.Destination.initDestination(Destination.java:103)
at flex.messaging.services.HTTPProxyService.createDestination(HTTPProxyS
ervice.java:78)
at flex.messaging.services.AbstractService.createDestinations(AbstractSe
rvice.java:82)
at flex.messaging.config.MessagingConfiguration.createServices(Messaging
Configuration.java:187)
at flex.messaging.config.MessagingConfiguration.configureBroker(Messagin
gConfiguration.java:84)
at flex.messaging.MessageBrokerServlet.init(MessageBrokerServlet.java:10
5)
at jrun.servlet.WebApplicationService.loadServlet(WebApplicationService.
java:1242)
at jrun.servlet.WebApplicationService.preloadServlets(WebApplicationServ
ice.java:789)
at jrun.servlet.WebApplicationService.postStart(WebApplicationService.ja
va:291)
at jrun.deployment.DeployerService.initModules(DeployerService.java:711)

at jrun.deployment.DeployerService.createWatchedDeployment(DeployerServi
ce.java:242)
at jrun.deployment.DeployerService.deploy(DeployerService.java:430)
at jrun.deployment.DeployerService.checkWatchedDirectories(DeployerServi
ce.java:179)
at jrun.deployment.DeployerService.run(DeployerService.java:891)
at jrunx.scheduler.SchedulerService.invokeRunnable(SchedulerService.java
:223)
at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.j
ava:426)
at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.comm
ons.logging.LogConfigurationException: Invalid class loader hierarchy. You have
more than one version of 'org.apache.commons.logging.Log' visible, which is not
allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Inval
id class loader hierarchy. You have more than one version of 'org.apache.common
s.logging.Log' visible, which is not allowed.)
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogF
actoryImpl.java:397)
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactory
Impl.java:529)
... 30 more
Caused by: org.apache.commons.logging.LogConfigurationException: Invalid class l
oader hierarchy. You have more than one version of 'org.apache.commons.logging.
Log' visible, which is not allowed.
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogF
actoryImpl.java:385)
... 31 more
[0]flex.messaging.config.ConfigurationException: Unable to create service 'flex.
messaging.services.HTTPProxyService' for 'proxy-service' due to the following er
ror: org.apache.commons.logging.LogConfigurationException: org.apache.commons.lo
gging.LogConfigurationException: Invalid class loader hierarchy. You have more
than one version of 'org.apache.commons.logging.Log' visible, which is not allow
ed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid cla
ss loader hierarchy. You have more than one version of 'org.apache.commons.logg
ing.Log' visible, which is not allowed.) (Caused by org.apache.commons.logging.L
ogConfigurationException: org.apache.commons.logging.LogConfigurationException:
Invalid class loader hierarchy. You have more than one version of 'org.apache.c
ommons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons
.logging.LogConfigurationException: Invalid class loader hierarchy. You have mo
re than one version of 'org.apache.commons.logging.Log' visible, which is not al
lowed.)).
at flex.messaging.config.MessagingConfiguration.createServices(Messaging
Configuration.java:202)
at flex.messaging.config.MessagingConfiguration.configureBroker(Messagin
gConfiguration.java:84)
at flex.messaging.MessageBrokerServlet.init(MessageBrokerServlet.java:10
5)
at jrun.servlet.WebApplicationService.loadServlet(WebApplicationService.
java:1242)
at jrun.servlet.WebApplicationService.preloadServlets(WebApplicationServ
ice.java:789)
at jrun.servlet.WebApplicationService.postStart(WebApplicationService.ja
va:291)
at jrun.deployment.DeployerService.initModules(DeployerService.java:711)

at jrun.deployment.DeployerService.createWatchedDeployment(DeployerServi
ce.java:242)
at jrun.deployment.DeployerService.deploy(DeployerService.java:430)
at jrun.deployment.DeployerService.checkWatchedDirectories(DeployerServi
ce.java:179)
at jrun.deployment.DeployerService.run(DeployerService.java:891)
at jrunx.scheduler.SchedulerService.invokeRunnable(SchedulerService.java
:223)
at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.j
ava:426)
at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)
# Posted By Bernie Lapierre | 7/13/06 3:59 PM
David Fekke's Gravatar I was able to get this working, but I cannot tell you how I did it, becuase it just started working. I have a weird problem with one of my development machines where an instance can be running, but JRun does not see that it is running. I have not tried with the latest versions of Flex and CFMX.

Good luck,
David.
# Posted By David Fekke | 7/13/06 4:21 PM
Kurt Mossman's Gravatar This can happen if you have the default-ear that JRun creates and you install the /samples files for Flex Data Services installed together.

The problem is with the commons-logging.jar. If you copy the commons-logging.properties file from the samples\WEB-INF\flex\jars\commons-logging.properties directory to the samples\WEB-INF\classes\commons-logging.properties directory, it will resolve the problem.

This is listed as Adobe FDS bug: 179227
# Posted By Kurt Mossman | 8/2/06 9:59 AM
Heather Carter's Gravatar Check that the data services config file destination fully quantifies fill parameters.
Ex:
<destination .....>
<fill-method>
<name>searchPorts</name>
<params>java.util.Map</params>
</fill-method>

I am deploying flex on weblogic, and was using daoflex to generate my daos.
It was just populating the params tag with the class.
<params>Map</params>

When I noticed that the MessageBrokerServlet wasn't starting up, it was
complaining about my data adapter and it couldn't find class "Map".
# Posted By Heather Carter | 6/3/07 5:18 PM
Alex's Gravatar http://www.listsofbests.com/list/44908 | http://www.listsofbests.com/list/44906 Very useful information. Thanks. thanks for this guys
# Posted By Alex | 11/21/07 12:00 AM
Junior's Gravatar Hello, I tryed this example and I got the follow error:

Unable to find the ColdFusion Data Management Service in RMI registry on 'localhost:1099'. Flex Data Management support may not be enabled.

Do you know what is it?
Thanks
# Posted By Junior | 1/14/08 6:34 PM
David Fekke's Gravatar Junior,

It sounds like you need make change to one of the config files. It has been over a year since I have worked with LiveCycle or FDS.

Good luck,
David
# Posted By David Fekke | 1/15/08 6:13 AM
Junior's Gravatar I checked the config files and i think that working fine. I have running coldfusion 8 and coldfusion 7, probably it is the problem.
I search information in the web and I found it:

When this error occurs, ColdFusion is unable to start the Flex 2 Assembler service. The error is logged in the cf_root/logs/flex.log file.

but i do not know how I can to repair this?

thanks
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