I am going to use a Solr server which will receive some data from a server by the Solrj framework (I heard that it is a framework, but I am not sure). I did not find many documentation for Solrj, so I used its wiki.
When I follow the explanations, I find that all the jars were not in my jar list when I copied the dependency, so I had to download the apache-solr-solrj-*.jar and made other dependencies.
But a bigger problem is, I cannot import org.apache.solr.client.solrj.impl.HttpSolrServer consequently, I cannot call HttpSolrServer. My IDE recognise CommonsHttpSolrServer, although it does not want to use it (maybe because it does not exist).