Error when start Solr cloud, due to location of 3rd party libraries

Question

I tried to migrate to Solr 3.1 , my project uses Dataimport handler , when I started solr it asked me SolrCoreAwar not found I copied the following file to lib directory apache-

Answer 1

#solr 3.5 : The classloader issue has been correctly identified above, but the solution didn't seem to work for me. I just put the dataimporthandler jars into the solr.war file and that worked, of course.