solr6.4.2之webservice兼容升级

1. org.apache.solr.client.solrj.impl.HttpSolrServer 修改为：org.apache.solr.client.solrj.impl.HttpSolrClient

2. SolrClient solrClient = new CloudSolrClient(zkHost);
   new方式在新版已经被废弃，采用新版链式赋值法进行创建对象
   SolrClient solrClient = new CloudSolrClient.Builder().withZkHost(Arrays.asList(zkHost.split(","))).build();

3. solrClient = new ConcurrentUpdateSolrClient(url, queueSize, threadCount);
   采用链式赋值法
   solrClient = new ConcurrentUpdateSolrClient.Builder(url).withQueueSize(queueSize).withThreadCount(threadCount).build();

4. solrClient = new HttpSolrClient(baseURL);
   采用链式赋值法
   solrClient = new HttpSolrClient.Builder(baseURL).build();

5. ClusterState clusterState = zkStateReader.getClusterState();
   Map map = clusterState.getActiveSlicesMap(collection);
   api已经将getActiveSlicesMap废弃
   map = clusterState.getCollection(collection).getActiveSlicesMap();

6. List collections = zkStateReader.getAllCollections();
   api已经将getAllCollections()废弃掉
   Map map = zkStateReader.getClusterState().getCollectionsMap();

7. Collection slices = clusterState.getSlices(Collection);
   api已经将getSlices(collection)废弃,采用更加方便、安全的中间类DocCollection
   DocCollection docCollection = clusterState.getCollection(collection);
   Collection slices = docCollection.getActiveSlices();

8. CollectionAdminRequest.Create req = new CollectionAdminRequest.Create();
   req.setCollectionName(name);
   req.setNumShards(numShards);
   req.setConfigName(cluster);
   req.setCreateNodeSet(getNodeSet(cluster));
   req.setReplicationFactor(numReplicas);
   修改为链式赋值法
   CollectionAdminRequest.Create req = CollectionAdminRequest.createCollection(name, cluster, numShards, numReplicas);

9. CollectionAdminRequest.Delete req = new CollectionAdminRequest.Delete();
   api已将这种创建方式废弃
   CollectionAdminRequest.Delete req = CollectionAdminRequest.deleteCollection(name);

10. CollectionAdminRequest.CreateAlias req = new CollectionAdminRequest.CreateAlias();
   api已经将这种创建方式废弃
   CollectionAdminRequest.CreateAlias req = CollectionAdminRequest.createAlias(name, collections);

11. CollectionAdminRequest.DeleteAlias req = new CollectionAdminRequest.deleteAlias();
   api已经将这种创建方式废弃
   CollectionAdminRequest.DeleteAlias req = CollectionAdminRequest.deleteAlias(name);

12. SolrInputDocument inputDocument = ClientUtils.toSolrInputDocument(solrDocument);
   将SolrDocument 转换为 SolrInputDocument 的方法从ClientUtils中移除了.从solr-5.5之后就将此方法移除，代码中要想使用此类似功能，需要自己添加方法实现
   /**
     * 将SolrDocument转换为SolrInputDocument,原底层提供的方法从solr5.5之后被废弃掉了
     * add by liangyongxing
     * @param solrDocument
     * @createTime 2017-02-21
     * @return
     */
    public static SolrInputDocument toSolrInputDocument(SolrDocument solrDocument) {
        SolrInputDocument doc = new SolrInputDocument();
        for (String name : solrDocument.getFieldNames()) {
            doc.addField(name, solrDocument.getFieldValue(name));
        }
        return doc;
    }