使用Ant更改jar内的属性文件

 <property name="jar.file" value="your-jar-file.jar"/>
 <property name="properties.file" value="your-properties-file.properties"/>
 <property name="temp.dir" value="temp"/>

 <target name="update-properties">
    <mkdir dir="${temp.dir}"/>
    <unjar src="${jar.file}" dest="${temp.dir}">
     <patternset>
       <include name="**/${properties.file}"/>
      </patternset>
    </unjar>

    <!-- 修改属性文件 -->
   <propertyfile file="${temp.dir}/${properties.file}"
                  comment="Do not edit -- auto-generated">
     <entry key="your-property-key" value="your-property-value"/>
    </propertyfile>

    <jar destfile="${jar.file}" basedir="${temp.dir}"/>
   <delete dir="${temp.dir}"/>
  </target>
</project>

ant update-properties