Classpath problem in exploded ear

Question

I'm having problems deploying an application in a new environment. We deploy Mercury.ear as an exploded ear under
Windows in a single-server domain without any problem.
I am tasked with setting up a WL cluster as the first step in our cluster certification/testing (under Linux/RedHat ASE 3.0).
We are using WL 8.1. SP2. This should be a relatively trivial task, but I must be missing something obvious,
because I've been banging my head on it the last couple of days.
Basically, I have two WL managed servers, ClusterMember1 and ClusterMember2 and an admin server AdminServer created in a WL domain.
All servers start normally (when no applications are deployed to the managed servers).
I have appended our entire config.xml to the end of this post, but here is the relevant <Application> section:
<Application Name="Mercury"
Path="/root/bea/user_projects/domains/clusterdomain/applications/Mercury"
StagingMode="nostage" TwoPhase="true">
<EJBComponent Name="MercuryEJB.jar" Targets="ClusterMember1" URI="MercuryEJB.jar"/>
<WebAppComponent Name="Apollo" Targets="ClusterMember1" URI="MercuryWeb.war"/>
<ConnectorComponent Name="SpectraConnector.rar"
Targets="ClusterMember1" URI="SpectraConnector.rar"/>
</Application>
I am only attempting to deploy to managed server ClusterMember1 at this time.
When I attempt to start ClusterMember1:
./startManagedWebLogic.sh ClusterMember1 http://localhost:9001 &
It starts up, syncs with the admin server, and then attempts to deploy the Mercury application. I get the following exception when it attempts to start the Mercury application:
<Feb 1, 2006 10:07:55 AM CST> <Error> <HTTP> <BEA-101216> <Servlet: "context" failed to preload on startup in Web application: "Apollo".
javax.servlet.ServletException: Error registering bean with name 'ApolloSessionManager' defined in URL [file:/root/bea/user_projects/domains/clusterdomain/applications/Mercury/mercuryresources.jar/resources/xml/springconfig/Service-DAO-config.xml]: Class that bean class [com.sg.sims.mercury.apolloweb.service.processor.ApolloSessionManager] depends on not found; nested exception is java.lang.NoClassDefFoundError: com/sg/sims/mercury/apolloweb/service/processor/ApolloSessionManager
     at weblogic.servlet.internal.ServletStubImpl.createServlet()Ljavax/servlet/Servlet;(ServletStubImpl.java:985)
{...snipped...}
Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Error registering bean with name 'ApolloSessionManager' defined in URL [file:/root/bea/user_projects/domains/clusterdomain/applications/Mercury/mercuryresources.jar/resources/xml/springconfig/Service-DAO-config.xml]: Class that bean class [com.sg.sims.mercury.apolloweb.service.processor.ApolloSessionManager] depends on not found; nested exception is java.lang.NoClassDefFoundError: com/sg/sims/mercury/apolloweb/service/processor/ApolloSessionManager
     at org.springframework.beans.factory.xml.DefaultXmlBeanDefinitionParser.parseBeanDefinition(Lorg/w3c/dom/Element;Ljava/lang/String;)Lorg/springframework/beans/factory/config/BeanDefinition;(DefaultXmlBeanDefinitionParser.java:366)
{...snipped...}
Caused by: java.lang.NoClassDefFoundError: com/sg/sims/mercury/apolloweb/service/processor/ApolloSessionManager
     at java.lang.Class.forName(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;(Unknown Source)
     at org.springframework.beans.factory.support.BeanDefinitionReaderUtils.createBeanDefinition(Ljava/lang/String;Ljava/lang/String;Lorg/springframework/beans/factory/config/ConstructorArgumentValues;Lorg/springframework/beans/MutablePropertyValues;Ljava/lang/ClassLoader;)Lorg/springframework/beans/factory/support/AbstractBeanDefinition;(BeanDefinitionReaderUtils.java:50)
{...snipped...}
Clearly, Spring can't find the ApolloSessionManager class (or one of its dependent classes, the error message is somewhat unclear in places).
However, the ApolloSessionManager.class file is there, under the mercurybusiness.jar directory (with package structure).
// from ${DOMAIN_HOME}/applications/Mercury:
ls -la mercurybusiness.jar/com/sg/sims/mercury/apolloweb/service/processor/ApolloSessionManager
-rw-r--r-- 1 root root 7162 Jan 31 17:20 mercurybusiness.jar/com/sg/sims/mercury/apolloweb/service/processor/ApolloSessionManager.class
mercurybusiness.jar (in turn) is present in the MercuryEJB.jar MANIFEST.MF file:
// ${DOMAIN_HOME}/applications/Mercury/MercuryEJB.jar/META-INF/MANIFEST.MF:
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.6.1
Created-By: 1.4.2_05-b04 (Sun Microsystems Inc.)
Class-Path: mercurycommon.jar mercuryresources.jar mercurybusiness.jar mercuryserviceflow.jar mercuryutils.jar spectraconnector.rar {...snipped...}
The same situation appears for the classes that ApolloSessonManager depends on: MercuryLogger (a log4j wrapper) and the HTTPClient.jar classes
(e.g. Cookie, etc), except 3rd party jars are listed in the MANIFEST.MF of MercuryEJB.jar but are not exploded.
There is no weblogic-application.xml file to override the default classloader hierarchy, so my understanding
is that everything in the application should share a single classloader.
So I am at a loss to understand why classes in MercuryWeb.war can not load classes in dependent jars of MercuryEJB.jar.
As a note, if I add /root/bea/user_projects/domains/clusterdomain/applications/Mercury/mercurybusiness.jar to the CLASSPATH variable in startManagedWebLogic.sh,
this error disappears of course, and it barfs on the next application class it can't find (in one of the other exploded jars that MercuryEJB.jar depends on.
Can someone help point out what I may be missing?
Chris Goodacre
// config.xml
<?xml version="1.0" encoding="UTF-8"?>
<Domain ConfigurationVersion="8.1.5.0" Name="clusterdomain">
<Server Cluster="SIMS_TEST_CLUSTER_1" ListenAddress=""
ListenPort="9001" Name="AdminServer" NativeIOEnabled="true"
ReliableDeliveryPolicy="RMDefaultPolicy" ServerVersion="8.1.5.0">
<SSL Enabled="false" HostnameVerificationIgnored="false"
IdentityAndTrustLocations="KeyStores" Name="AdminServer"/>
</Server>
<WSReliableDeliveryPolicy DefaultRetryCount="10"
DefaultTimeToLive="60000" Name="RMDefaultPolicy" Store="FileStore"/>
<Security Name="clusterdomain"
PasswordPolicy="wl_default_password_policy"
Realm="wl_default_realm" RealmSetup="true"/>
<EmbeddedLDAP
CredentialEncrypted="{3DES}dMeE/vNpCcbjzOMZGfNeShv5VFZuQ=" Name="clusterdomain"/>
<SecurityConfiguration
CredentialEncrypted="{3DES}jFRG5NzABP8IAJa5M/PNNRCtZYaqkc2zUTYjlysL+md+TAgZw6IfgCjzzre4e7p5gyJEt+0UkPXNleN0QtW7Ef"
Name="clusterdomain" RealmBootStrapVersion="1"/>
<Realm FileRealm="wl_default_file_realm" Name="wl_default_realm"/>
<FileRealm Name="wl_default_file_realm"/>
<PasswordPolicy Name="wl_default_password_policy"/>
<JMSConnectionFactory DefaultDeliveryMode="Non-Persistent"
JNDIName="jms/ConnectionFactory" Name="ConnectionFactory" Targets="AdminServer"/>
<JMSFileStore Directory="rmfilestore" Name="FileStore"/>
<JMSServer Name="WSStoreForwardInternalJMSServerAdminServer"
Store="FileStore" Targets="AdminServer">
<JMSQueue CreationTime="1123128740234"
JNDIName="jms.internal.queue.WSStoreForwardQueue"
JNDINameReplicated="false" Name="WSInternaljms.internal.queue.WSStoreForwardQueueAdminServer"/>
<JMSQueue CreationTime="1123128740390"
JNDIName="jms.internal.queue.WSDupsEliminationHistoryQueue"
JNDINameReplicated="false" Name="WSInternaljms.internal.queue.WSDupsEliminationHistoryQueueAdminServer"/>
<JMSQueue CreationTime="1123128837453" JNDIName="jms/MenuQueue"
Name="MenuQueue" StoreEnabled="false"/>
<JMSQueue CreationTime="1123128864296"
JNDIName="jms/MenuXMLQueue" Name="MenuXMLQueue" StoreEnabled="false"/>
<JMSQueue CreationTime="1123128892343"
JNDIName="jms/DataSyncQueue" Name="DataSyncQueue" StoreEnabled="false"/>
<JMSQueue CreationTime="1123128915421"
JNDIName="jms/LoginRefreshQueue" Name="LoginRefreshQueue" StoreEnabled="false"/>
<JMSQueue CreationTime="1123128937046"
JNDIName="jms/ProfileQueue" Name="ProfileQueue" StoreEnabled="false"/>
<JMSQueue CreationTime="1123128957125"
JNDIName="jms/ReportsQueue" Name="ReportsQueue" StoreEnabled="false"/>
</JMSServer>
<Cluster Name="SIMS_TEST_CLUSTER_1"/>
<Server Cluster="SIMS_TEST_CLUSTER_1" ExpectedToRun="false"
ListenPort="9999" Name="ClusterMember1" ServerVersion="8.1.5.0">
<ServerDebug Name="ClusterMember1"/>
<SSL IdentityAndTrustLocations="KeyStores" Name="ClusterMember1"/>
<KernelDebug Name="ClusterMember1"/>
<Log Name="ClusterMember1"/>
<ServerStart Name="ClusterMember1"
PasswordEncrypted="{3DES}TC7nfOvKF0xwJB/f+tyYwQ==" Username="toolbox"/>
<WebServer Name="ClusterMember1"/>
<COM Name="ClusterMember1"/>
<IIOP Name="ClusterMember1"/>
<JTAMigratableTarget Name="ClusterMember1" UserPreferredServer="ClusterMember1"/>
<JTARecoveryService Name="ClusterMember1"/>
</Server>
<MigratableTarget Cluster="SIMS_TEST_CLUSTER_1"
Name="ClusterMember1 (migratable)"
Notes="This is a system generated default migratable target for a server. Do not delete manually." UserPreferredServer="ClusterMember1"/>
<Server Cluster="SIMS_TEST_CLUSTER_1" ExpectedToRun="false"
ListenPort="9998" Name="ClusterMember2" ServerVersion="8.1.5.0">
<ServerDebug Name="ClusterMember2"/>
<SSL IdentityAndTrustLocations="KeyStores" Name="ClusterMember2"/>
<KernelDebug Name="ClusterMember2"/>
<Log Name="ClusterMember2"/>
<ServerStart Name="ClusterMember2"
PasswordEncrypted="{3DES}TC7nfOvKF0xwJB/f+tyYwQ==" Username="toolbox"/>
<WebServer Name="ClusterMember2"/>
<COM Name="ClusterMember2"/>
<IIOP Name="ClusterMember2"/>
<JTAMigratableTarget Name="ClusterMember2" UserPreferredServer="ClusterMember2"/>
<JTARecoveryService Name="ClusterMember2"/>
</Server>
<MigratableTarget Cluster="SIMS_TEST_CLUSTER_1"
Name="ClusterMember2 (migratable)"
Notes="This is a system generated default migratable target for a server. Do not delete manually." UserPreferredServer="ClusterMember2"/>
<JDBCConnectionPool DriverName="com.sybase.jdbc2.jdbc.SybDriver"
Name="MercuryJDBCConnPool"
PasswordEncrypted="{3DES}Enwr7V6DdUk="
Properties="user=dbuser;url=jdbc:sybase:Tds:10.15.3.66:4100/ENT_60_DEV;networkProtocol=Tds;portNumber=4100;userName=dbuser;databaseName=ENT_60_DEV;serverName=10.15.3.66"
Targets="SIMS_TEST_CLUSTER_1" TestTableName="SQL SELECT 1" URL="jdbc:sybase:Tds:10.15.3.66:4100/ENT_60_DEV"/>
<JDBCDataSource JNDIName="jdbc/MercuryDS" Name="MercuryDS"
PoolName="MercuryJDBCConnPool" Targets="SIMS_TEST_CLUSTER_1"/>
<MigratableTarget Cluster="SIMS_TEST_CLUSTER_1"
Name="AdminServer (migratable)"
Notes="This is a system generated default migratable target for a server. Do not delete manually." UserPreferredServer="AdminServer"/>
<Application Name="Mercury"
Path="/root/bea/user_projects/domains/clusterdomain/applications/Mercury"
StagingMode="nostage" TwoPhase="true">
<EJBComponent Name="MercuryEJB.jar" Targets="ClusterMember1" URI="MercuryEJB.jar"/>
<WebAppComponent Name="Apollo" Targets="ClusterMember1" URI="MercuryWeb.war"/>
<ConnectorComponent Name="SpectraConnector.rar"
Targets="ClusterMember1" URI="SpectraConnector.rar"/>
</Application>
</Domain>
////////////////////////////////////////////////////////////

Answer 1

Sorry, I don't have the response to your question.
But I'd like to know how youmake your servlet and your applet communicate.
I'm building a web site using both applets and servlet. And I nned to make them communicate. I'm trying to use RMI but I get many problems.
Can I know Which solution you have chosen for applet-servlet communication ?
Thank's.