如何在ant jar任务中排除文件夹？

Question

我正在尝试使用ant构建一个java项目。我必须从jar目录的基础目录中排除特定目录。这是代码段。

<target name="jar" depends="wsdl2java,oss.init,oss.request.compile">
    <copy todir="${build.lib.dir}">
            <fileset dir="${oss.lib.dir}" includes="**/*.*" excludes="**/weblogic.jar"/>
    </copy>
    <copy todir="${build.conf.dir}">
                    <fileset dir="${oss.conf.dir}" includes="**/*.*"/>
    </copy>
    <copy todir="${oss.build.dir}">
                    <fileset dir="${oss.run.dir}" includes="**/*.*"/>
    </copy>
    <jar destfile="${oss.build.dir}/osstool2.5.5.jar" basedir="${oss.class.dir}" excludes="**/dms/*">

        <manifest>
            <attribute name="Main-Class" value="${main-class}"/>
            <attribute name="Created-By" value="${owner}"/>
            <attribute name="Class-Path" value=". lib/antlr-runtime-3.0.1.jar.jar lib/log4j.jar
                lib/commons-discovery-0.2.jar lib/commons-logging-1.1.1.jar
                lib/spring.jar lib/axis.jar lib/axis-ant.jar lib/jaxrpc-api.jar 
                lib/webserviceclient.jar lib/webserviceclient+ssl.jar 
                lib/wlclient.jar lib/wsdl4j-1.5.1.jar lib/wsse.jar lib/ala-castor.jar lib/log4j.jar lib/log4j.jar lib/xercesImpl.jar 
                lib/ala-nbi-commons-1.3.0.jar lib/ala-nbi-notification-plugins.jar lib/ala-nbi-webservice-client-1.3.0.jar 
                lib/axis.jar lib/axis-ant.jar lib/dom4j-1.6.1.jar lib/jaxrpc-api.jar lib/webserviceclient.jar lib/webserviceclient+ssl.jar 
                lib/wlclient.jar lib/wsdl4j-1.5.1.jar lib/wsse.jar lib/commons-logging.jar">
            </attribute>
        </manifest>
    </jar>
</target>   

我在这里缺少什么？ 提前谢谢。