MANIFEST.MF is override after running build.xml using ant - ant

Question

have following directory structure
src/com
src/META-INF/MANIFEST.MF
src/META-INF/spring
src/META-INF/spring/context.xml
now when i run the script, my menifest file is override, i don't want that, because i have to add custom enteries in it and i want that to be adding in generated .jar file. THing is all other files are copied, but this one is override.
my build.xml is as follows
<project name="TaskNodeBundle" default="all" basedir=".">
<!-- Sets variables which can later be used. -->
<!-- The value of a property is accessed via ${} -->
<property name="bundlename" value="tasknodebundle" />
<property name="src.dir" location="../src" />
<property name="lib.dir" location="../lib" />
<property name="build.dir" location="/buildoutput" />
<property name="build.dest" location="../build/dest" />
<!--
Create a classpath container which can be later used in the ant task
-->
<path id="classpath">
<fileset dir="${lib.dir}/">
<include name="*.jar" />
</fileset>
</path>
<target name="clean">
<delete dir="${build.dir}" />
<delete dir="${build.dest}" />
</target>
<!-- Deletes the existing build directory-->
<target name="mkdir" depends="clean">
<mkdir dir="${build.dest}"/>
</target>
<!-- Compiles the java code -->
<target name="compile" depends="mkdir">
<javac srcdir="${src.dir}" destdir="${build.dest}" classpathref="classpath" />
</target>
<target name="package-bundle" depends="compile" description="Generates the bundle">
<jar destfile="${build.dest}/${bundlename}.jar">
<fileset dir="${src.dir}">
<include name="**/**.class" />
<include name="**/**.properties"/>
<include name="/META-INF/**.*" />
<include name="/META-INF/spring/**.*" />
</fileset>
</jar>
</target>
<target name="all" depends="package-bundle">
</target>
</project>

Answer 1

See http://ant.apache.org/manual/Tasks/jar.html.
If the manifest is omitted, a simple one will be supplied by Apache
Ant.
Just add manifest attribute or use zip task.
Also ant path masks are used incorrectly. See http://en.wikibooks.org/wiki/Apache_Ant/Fileset.
Corrected version:
<zip destfile="${build.dest}/${bundlename}.jar">
<fileset dir="${src.dir}">
<include name="META-INF/**" />
<include name="**/*.class" />
<include name="**/*.properties"/>
</fileset>
</zip>