ANT Problems: net/sf/antcontrib/antcontrib.properties

Question

I am attempting to install software onto my Debian Lenny server. Specifically, Capture-HPC. I have setup VMWare server, along with all the prerequisites. When I go to run ant in the directory, i get the following error:

[taskdef] Could not load definitions from resource net/sf/antcontrib/antcontrib.properties. It could not be found. 

Anyone have any ideas what is causing this? Details about my ant installation follow:

Apache Ant version 1.7.0 compiled on April 29 2008 Buildfile: build.xml Detected Java version: 1.6 in: /usr/lib/jvm/java-6-sun-1.6.0.20/jre Detected OS: Linux 

And the build.xml file . . .

<?xml version="1.0"?> <project name="CaptureServer" xmlns:ac="antlib:net.sf.antcontrib" default="release" basedir="."> <taskdef resource="net/sf/antcontrib/antcontrib.properties"/>  <condition property="os" value="unix">     <os family="unix"/> </condition> <condition property="os" value="windows">     <os family="windows"/> </condition>   <property environment="env"/>  <property name="src" value="."/>  <property name="build" value="build"/>  <property name="lib" value="lib"/>  <property name="release" value="release"/>  <property name="classpath.build" value=".\lib\junit-4.4.jar"/>  <property name="classpath.run" value="lib/junit-4.4.jar"/>    <path id="classpath">     <fileset dir="${lib}">         <include name="*.jar"/>     </fileset>  </path>   <target name="init">       <mkdir dir="${build}"/>       <mkdir dir="${release}"/>  </target>   <target name="compile" depends="init">       <!-- Compile the java code -->                <javac srcdir="${src}" destdir="${build}" debug="true" debuglevel="lines,vars,source" classpath="${classpath.build}"/>        <!-- Compile the revert code -->       <if>        <equals arg1="${os}" arg2="windows" />        <then>        <exec executable="compile_revert_win32.bat"/>        </then>       <else>        <exec command="sh" executable="./compile_revert_linux.sh"/>       </else>      </if>   </target>   <target name="jar" depends="compile">     <mkdir dir="${build}/jar"/>     <jar destfile="${build}/jar/CaptureServer.jar" basedir="${build}">         <manifest>             <attribute name="Class-Path" value="${classpath.run}"/>             <attribute name="Main-Class" value="capture.Server"/>         </manifest>     </jar> </target>  <target name="release" depends="clean,compile,jar">     <copy file="${build}/jar/CaptureServer.jar" todir="${release}"/>     <copy file="./COPYING" todir="${release}"/>     <copy file="./Readme.txt" todir="${release}"/>     <copy file="./preprocessor_README.txt" todir="${release}"/>     <copy file="./input_urls_example.txt" todir="${release}"/>     <copy file="./config.xsd" todir="${release}"/>     <copy file="./config.xml" todir="${release}"/>     <copy todir="${release}/${lib}">         <fileset dir="lib"/>     </copy>      <if>        <equals arg1="${os}" arg2="windows" />        <then>         <copy file="${env.VIX_HOME}/libeay32.dll" todir="${release}"/>         <copy file="${env.VIX_HOME}/ssleay32.dll" todir="${release}"/>         <copy file="${env.VIX_HOME}/vix.dll" todir="${release}"/>         <copy file="./revert.exe" todir="${release}"/>        </then>       <else>         <exec executable="cp">           <arg value="./revert"/>           <arg value="${release}"/>         </exec>       </else>      </if>        <zip destfile="./CaptureServer-Release.zip" basedir="release"/> </target>  <target name="clean">     <delete dir="${build}"/>     <delete dir="${release}"/>     <delete>         <fileset dir="." includes="revert.exe"/>         <fileset dir="." includes="revert"/>         <fileset dir="." includes="CaptureServer-Release.zip"/>     </delete> </target> </project> 

Answer 1

This error message indicates that you are attempting to load a non-core task, but the resource which further defines the task is not present (or not where expected).

See installation instructions here.

You can either

1. find/download the ant-contrib jar and put it into your ant installation (as per option 1 in the link above); or
2. Modify your ant file (as per option 2 in the link above) to include the ant-contrib jar in a nested classpath.