I followed the answer for how to create a ZIP archive in Maven here: <https://stackoverflow.com/a/2514677/1395165> 
and have a couple of follow-up questions:

**ZIP contents to exclude directory:**

As in the example I have:

```
<fileSet>
    <directory>${project.basedir}/src/export</directory>
    <useDefaultExcludes>true</useDefaultExcludes>
</fileSet>

```

In the ZIP I get 

```
src
  export
     Dir1
     Dir2

```

but I only want to have 

```
Dir1
Dir2 

```

in the ZIP. Is that possible?

**Output file name**

The output file name is created with a .zip extension. Is it possible in Maven to override the extension to something else (say .abc)?