Having problem creating maven artifacts in solr on Windows 7

I'm trying to build solr 4.0 snapshot in maven. Here are my steps:

1. Check out solr in d:\workspace\solr
2. download ant, unzip to d:\ant. set the ANT_HOME to d:\ant
3. download maven-ant-tasks-2.1.3.jar (the latest version) to d:\ant\lib
4. in commandline, go to d:\workspace\solr\lucene
5. run command: ant generate-maven-artifacts

it gives the error:

D:\workspace\solr\lucene\common-build.xml:326: #
    ##########################################################################
      Maven ant tasks not found.

      Please download the Maven ant tasks JAR (maven-ant-tasks-2.1.1.jar)
      from http://maven.apache.org/ant-tasks/download.html and add it to your
      $HOME/.ant/lib/ directory, or to your $ANT_HOME/lib/ directory, or
      to your $CLASSPATH, or add "-lib /path/to/maven-ant-tasks-2.1.1.jar"
      to the ant command.
    ##########################################################################

Total time: 0 seconds

I tried running:

ant -lib d:\ant\lib generate-maven-artifacts

it's the same error.

running ant alone will build solr without problem.

Environment setting:

D:\workspace\solr\lucene>ant -version
Apache Ant(TM) version 1.8.2 compiled on December 20 2010

D:\workspace\solr\lucene>mvn --version
Apache Maven 2.2.1 (r801777; 2009-08-06 12:16:01-0700)
Java version: 1.6.0_24
Java home: C:\Program Files (x86)\Java\jdk1.6.0_24\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 7" version: "6.1" arch: "x86" Family: "windows"

Can any one he开发者_如何学编程lp? Thanks.

I think you need to run ant like this:

 ant -lib d:\ant\lib\maven-ant-tasks-2.1.1.jar generate-maven-artifacts

Classpath adds need file references (not directory references). You can also add it like so:

 SET CLASSPATH=%CLASSPATH%;d:\ant\lib\maven-ant-tasks-2.1.1.jar
 ant generate-maven-artifacts