有人尝试过使用Apache Nutch 2.3和MySQL吗？有人说Nutch 2.3不能再与MySQL一起使用，但看看ivy.xml中的组件，MySQL仍然在可能的依赖列表中。所以，我像在早期的Apache2.x版本中那样做了。这是我的ivy.xml（gora工件的一部分）：

<!--================-->
<!-- Gora artifacts -->
<!--================-->
<!-- N.B. To use Gora SNAPSHOT's merely replace the 'ref' value with the SNAPSHOT version 
and add changing="true" alongside the dependency declaration. An example has been
provided for the gora-core dependency as below -->
<dependency org="org.apache.gora" name="gora-core" rev="0.2.1" conf="*->default"/>

<!-- Uncomment this to use SQL as Gora backend. It should be noted that the 
gora-sql 0.1.1-incubating artifact is NOT compatable with gora-core 0.3. Users should 
downgrade to gora-core 0.2.1 in order to use SQL as a backend. -->

<dependency org="org.apache.gora" name="gora-sql" rev="0.1.1-incubating" conf="*->default" />
<!-- Uncomment this to use MySQL as database with SQL as Gora store. -->

<dependency org="mysql" name="mysql-connector-java" rev="5.1.18" conf="*->default"/> 

对此使用ant runtime会产生一个错误，指向build.xml的第101行，说

deprecation="${javac.deprecation}">

有人有变通办法吗？谢谢