solr SolrServer

package com.su.search.client; 
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.Date;


import org.apache.commons.lang.time.DateFormatUtils;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.impl.HttpSolrServer;
import org.apache.solr.common.SolrInputDocument;


/**
 * Description:
 * @author  LiChunming
 * @version V1.0 
 * @createDateTime：2012-2-27 下午03:49:04 
 * @Company: MSD. 
 * @Copyright: Copyright (c) 2011
 **/
public class SolrServer {
    private static SolrServer solrServer = null;
    private static HttpSolrServer server=null;
    private static String url="http://localhost:8080/solr/core0";
    
    public static synchronized SolrServer getInstance() {
        if (solrServer==null){
           solrServer=new SolrServer();
        }
        return solrServer;
    }
    public static HttpSolrServer getServer(){
         if(server==null){
 server = new HttpSolrServer(url);
 server.setSoTimeout(1000);  // socket read timeout
 server.setConnectionTimeout(1000);
 server.setDefaultMaxConnectionsPerHost(100);
 server.setMaxTotalConnections(100);
 server.setFollowRedirects(false);  // defaults to false
 //allowCompression defaults to false.
 //Server side must support gzip or deflate for this to have any effect.
 server.setAllowCompression(true);
 server.setMaxRetries(1); // defaults to 0.  > 1 not recommended.
}
        return server;
    }
    public static void main(String[] args) {
      HttpSolrServer solrServer= SolrServer.getInstance().getServer();
           SolrInputDocument doc1 = insert("b", "http:vvvvvyyvvs", "b", "b", "b", "b", "b", "b", "b", new Date(), "site");
           
           try {
solrServer.add(doc1);
} catch (SolrServerException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
           try {
solrServer.commit();
} catch (SolrServerException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
    public static SolrInputDocument insert(String user, String link, String title,
String desc, String content, String tags, String keywords,
String site, String type, Date date, String name) {
    // SitesIndexDTO sitesIndex = new SitesIndexDTO();
SolrInputDocument doc = new SolrInputDocument();
if (link != null && !"".equals(link)) {
doc.addField("link", link);
}
if (title != null && !"".equals(title)) {
doc.addField("title", title);
}
if (keywords != null && !"".equals(keywords)) {
doc.addField("keywords", keywords);
}
if (desc != null && !"".equals(desc)) {
doc.addField("desc", desc);
}
if (content != null && !"".equals(content)) {
doc.addField("content", content);
}
if (tags != null && !"".equals(tags)) {
doc.addField("tags", tags);
}
doc.addField("source", "admin");
if (site != null && !"".equals(site)) {
doc.addField("site", site);
}
if (type != null && !"".equals(type)) {
doc.addField("type", type);
}
if (date != null && !"".equals(date)) {
doc.addField("last_modified",
DateFormatUtils.format(date, "yyyy-MM-dd'T'HH:mm:ss'Z'"));
}
return doc;
    }
}