Eclipse – org/apache/commons/codec/DecoderException when integrating Ant-Contrib into Eclipse

antant-contribeclipse

I've tried to integrate Ant-Contrib 1.0b3 into Eclipse by adding the ant-contrib-1.0b3.jar and the appendant jar-files from the libs-directory to the "Global Entries"-section of the Ant-Runtime-preferences page in Eclipse.

For tasks that don't need the libs, such as propertyregex, this works fine.
But when I try to use the postMethod task I get the following error:

java.lang.NoClassDefFoundError: org/apache/commons/codec/DecoderException

Any suggestions on what to do to resolve this?

Best Solution

It looks like your rig doesn't include the Apache Commons Codec which must be a dependency of ant-contrib.

According to the dependencies here you might also need commons-logging, but you've probably already got that.

Related Solutions

Ant: Problem: failed to create task or type propertyregex

The propertyregex ant task is part of ant-contrib, and not included by default in any apache-ant installation.

You have to properly install ant-contrib. From the ant-contrib page, you have two choices:

Copy ant-contrib-0.3.jar to the lib directory of your Ant installation. If you want to use one of the tasks in your own project, add the line <taskdef resource="net/sf/antcontrib/antcontrib.properties"/> to your build file.

Keep ant-contrib-0.3.jar in a separate location. You now have to tell Ant explicitly where to find it (say in /usr/share/java/lib):

<taskdef resource="net/sf/antcontrib/antcontrib.properties">
<classpath>
<pathelement location="/usr/share/java/lib/ant-contrib-0.3.jar"/>
</classpath>
</taskdef>

Eclipse – Getting an error “Could not load definitions from resource net/sf/antcontrib/antcontrib.properties. It could not be found.”

You can provide full path to the ant-contrib JAR explicitly using "classpath" element:

<taskdef resource="net/sf/antcontrib/antlib.xml">
  <classpath>
    <pathelement location="${path-to-ant-contrib}/ant-contrib-1.0b3.jar"/>
  </classpath>
</taskdef>

Best Solution

Related Solutions

Ant: Problem: failed to create task or type propertyregex

Eclipse – Getting an error “Could not load definitions from resource net/sf/antcontrib/antcontrib.properties. It could not be found.”

Related Question