Packaging JAR's using Ant in Eclipse

Question

Hey,
I'm new to Ant, and xml for that matter. I need to rmi compile & package a set of simple classes whose objects call eachother remotely. I need seperate jars for a "server" and one for "client" containing whatever classes are needed for each. Using Ant the classes should be compiled, packaged into the jars and then the jars should be copied to some other specified directory. And of course, the jars should be executable.
The files I use are AddressBook (interface extends Remote), AddressBookImpl (extends UnicastRemoteObject implements AddressBook), BuddyInfoInterf (interface extends Remote), BuddyInfo (the implementation, extends Unicast... implements BuddyI...), and AddressBookUser.
The AddressBook is created on the server-side (in main() found in AddressBookImpl) and is populated with BuddyInfo's also created server-side.
AddressBookUser is just the client accessing some info from ABook or BInfo.
So, anyway, here's the xml file I've written to do the tasks assigned. The classes compile fine, and the jar files seem to contain the proper files. My problem is that the jar files don't execute properly. The main() in AddressBookImpl creates the ABook and binds it to the rmiregistry. When I run the server.jar that is "initially" created during the process (the one in the base dir) it works fine but this only seems to work correctly because it's in the same dir as all of the compiled classes. The copied jar file in the other directory, or even if I manually copy the server.jar file in the base dir to some other dir, causes an exception when trying to bind the AddressBook to the registry saying it can't find a stub that is definitely located in the jar. And I'm running the rmiregistry in whatever dir the server.jar is in each time:
Exception in thread "main" java.rmi.ServerException: RemoteException occurred in
server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested excep
tion is:
java.lang.ClassNotFoundException: AddressBookImpl_Stub
at sun.rmi.server.....
<?xml version="1.0"?>
<project default="packaging">
<!-- Change location(s) to desired path(s) where client and/or
server jar files should be copied to, else will create folders
"client" and "server" in project directory and copy them to
there. -->
<property name="serverDir" location="./server"/>
<property name="clientDir" location="./client"/>
<!-- performs all tasks -->
<target name="packaging">
     <!-- Compiles all files in project directory. Necessary for
     AddressBookUser.java to be compiled -->
     <javac srcdir="."/>
     <!-- RMI compiles AddressBookImpl & BuddyInfo -->
     <rmic classname="AddressBookImpl" base="."/>
     <rmic classname="BuddyInfo" base="."/>
     <!-- Creates server jar file -->
     <jar destfile="./server.jar" basedir="." includes="**.class" excludes="AddressBookUser.**">
          <manifest>
               <attribute name="Main-Class" value="AddressBookImpl"/>
               <attribute name="Class-Path" value="."/>
          </manifest>
     </jar>
     <!-- Creates client jar file -->
     <jar destfile="./client.jar" basedir="." includes="**.class" excludes="AddressBookImpl.** BuddyInfo.** **Skel.class">
          <manifest>
               <attribute name="Main-Class" value="AddressBookUser"/>
               <attribute name="Class-Path" value="."/>
          </manifest>
     </jar>
     <!-- copy jar files to specified directories -->
     <copy file="./server.jar" todir="${serverDir}"/>
     <copy file="./client.jar" todir="${clientDir}"/>     
</target>
</project>
Sorry bout the length. Just want to cover my bases. Thanks for any help.

Answer 1

I am also having problem in building server.jar file using Ant. I am using EJB jar file in my web application, this jar file is called remotely from server to client. Client.jar file working correctly but the server.jar file contains error which is given below:
15:30:47,296 WARN [verifier] EJB spec violation:
Bean : Server
Section: 22.2
Warning: The Bean Provider must specify the fully-qualified name of the Java cla
ss that implements the enterprise bean's business methods in the <ejb-class> ele
ment.
Info : Class not found on 'com.ejb.ServerBean': No ClassLoaders found for: com.ejb.ServerBean
15:30:47,296 ERROR [MainDeployer] Could not create deployment: file:/C:/jboss-4.0.4.GA/server/default/deploy/server.jar
org.jboss.deployment.DeploymentException: Verification of Enterprise Beans failed, see above for error messages.
In above error, "Class not found on 'com.ejb.ServerBean' " is given. Will there be all the classes of EJB jar file in server.jar ? I think only the interface class file i.e. Server.class and serverHome.class must be included, am I correct or not?
Also the build.xml which I am using for creating server.jar is given below:
<project name="ServerEJB" default="make_server_jar" basedir=".">
<!-- Initialization variables -->
<property environment="env" />
<property name="app.name" value="${ant.project.name}"/>
<property name="source.dir" value="ejbModule"/>
<property name="build.dir" value="build"/>
<property name="classes.dir" value="${build.dir}/classes"/>
<property name="distribution.dir" value="dist"/>
     <property name="server.ejb.jar.name" value="server.jar"/>
<target name="clean" description="Deletes compiled and generated code">
<delete dir="${build.dir}"/>
</target>
<target name="make_server_jar" depends="" description="Builds a server.jar with stubs for apps to use">
<mkdir dir="${distribution.dir}" />
<jar destfile="${distribution.dir}/${server.ejb.jar.name}" basedir="${classes.dir}">
     <exclude name="**/*Bean.class"/>
</jar>
</target>     
</project>
I am using server.jar file in server as interface which will remotely call client.jar which will be kept at client location.
Anybody, can you provide me with the solution for this problem?...
Thank you.