Apache Nutch 2.3和MySQL(Apache Nutch 2.3 and MySQL)

 有没有人试过使用Apache Nutch 2.3和MySQL？ 有些人说Nutch 2.3不能再使用MySQL了，但是看看ivy.xml中的组件，MySQL仍然在可能的依赖列表中。 所以，我就像在旧的Apache 2.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"/> 
 
 在此使用ant运行时会产生一个指向build.xml第101行的错误 
 
deprecation="${javac.deprecation}">
 
 有没有人有解决方法？ 谢谢。 

Is there anyone who tried working with Apache Nutch 2.3 and MySQL? There are some people who say that Nutch 2.3 can no longer work with MySQL, but looking at the components in ivy.xml, MySQL is still in the list of possible dependencies. So, I did that as I would in the older Apache 2.x releases. Here's my ivy.xml (part of the gora artifacts):
 
<!--================-->
<!-- 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"/> 
 
Using ant runtime on this produces an error that points to line 101 of build.xml, saying 
 
deprecation="${javac.deprecation}">
 
Does anyone have a workaround? Thanks.

原文：https://stackoverflow.com/questions/34872518