ANT构建JAR包时设置MANIFEST.MF的Class-Path属性的技巧
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.8.1
Created-By: 1.5.0-b64 (Sun Microsystems Inc.)
当jar包中的class文件引用了第三方类库时，就要在Class-Path属性中写入这些类库的引用路径，注意，这个路径是相对于第一层Archive来说的。如你把第三方的jar包都放到了你要的目标文件app.jar的lib目录下。
在ant的build文件中定义lib所在目录的classpath：
<path id="queue-classpath">
<fileset dir="${queue.dir}" includes="**/*.jar" />
</path>
target定义：
<target name="queue-deploying" description="队列部署">
<unjar src="${svn.src.basedir}/lib/sfframe.jar" dest="${tmp.queue.dir}" />
<delete file="${tmp.queue.dir}/META-INF/MANIFEST.MF" />
<pathconvert property="mf.classpath" pathsep=" " description="把上面定义的path转换成property，path中jar包的路径用空格分开">
<mapper>
<chainedmapper>
<!-- 移除绝对路径 -->
<flattenmapper />
<!-- 加上lib前缀 -->
<globmapper from="*" to="lib/*" />
</chainedmapper>
</mapper>
<path refid="queue-classpath" description="path引用了上面定义的queue-classpath" />
</pathconvert>
<jar jarfile="${queue.dir}/sfframe.jar" basedir="${tmp.queue.dir}">
<!-- define MANIFEST.MF -->
<manifest>
<attribute name="Main-Class" value="com.ai.sfframe.common.RmiServer" />
<!--section name="common">
<attribute name="Specification-Title" value="${component.name}" />
<attribute name="Specification-Version" value="${component.version}" />
<attribute name="Specification-Vendor" value="${component.vendor}" />
<attribute name="Implementation-Title" value="${component.name}" />
<attribute name="Implementation-Version" value="${component.version} ${TODAY}" />
<attribute name="Implementation-Vendor" value="${component.vendor}" />
</section-->
<!-- finally, use the magically generated libs path -->
<attribute name="Class-Path" value="${mf.classpath}" />
</manifest>
</jar>
</target>
转载：http://ribbonchen.blog.163.com/blog/static/1183165052011327113745129/
http://quicker.iteye.com/blog/744953