＆＃34; org.apache.solr.common.SolrException：未找到集合＆＃34;使用solrj 4.x连接solr 5.5时

Question

以下是我正在尝试的代码

    String zkHostString = "zookeepername";  
    CloudSolrServer cloudSolrServer=new CloudSolrServer(zkHostString);  
    cloudSolrServer.setDefaultCollection("collectionname");  
    SolrPingResponse ping = cloudSolrServer.ping();  
    System.out.println("ping -->"+ping);  
    SolrPingResponse rsp=new SolrPingResponse();