HttpPost httpPost = new HttpPost(url);
List<NameValuePair> para = new ArrayList<NameValuePair>() ;
for( String hoge : list ) {
para.add( new BasicNameValuePair("hoge[]", hoge));
}
httpPost.setEntity(new UrlEncodedFormEntity( para, "UTF-8"));
HttpResponse response = httpclient.execute(httpPost);