公司使用elasticsearch2.4.6版本，因此选择spring-data-elasticsearch 2.0.4.RELEASE（2.0.4.RELEASE对应原生客户端版本号elasticsearch2.4.6），版本不一致将会导致报NoNodeAvailableException[None of the configured nodes are available异常，具体信息如下：
NoNodeAvailableException[None of the configured nodes are available: [{#transport#-1}{127.0.0.1}{127.0.0.1:9300}]]
at org.elasticsearch.client.transport.TransportClientNodesService.ensureNodesAreAvailable(TransportClientNodesService.java:290)
at org.elasticsearch.client.transport.TransportClientNodesService.execute(TransportClientNodesService.java:207)
at org.elasticsearch.client.transport.support.TransportProxyClient.execute(TransportProxyClient.java:55)
at org.elasticsearch.client.transport.TransportClient.doExecute(TransportClient.java:286)
at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:351)
at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:85)
at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:59)
at org.springframework.data.elasticsearch.core.ElasticsearchTemplate.doSearch(ElasticsearchTemplate.java:884)
at org.springframework.data.elasticsearch.core.ElasticsearchTemplate.queryForPage(ElasticsearchTemplate.java:271)
at org.springframework.data.elasticsearch.core.ElasticsearchTemplate.queryForPage(ElasticsearchTemplate.java:266)
at org.springframework.data.elasticsearch.core.ElasticsearchTemplate.queryForList(ElasticsearchTemplate.java:293)
at com.hyxdl.elasticsearch.service.impl.ElasticsearchServiceImpl.search(ElasticsearchServiceImpl.java:45)github官网上spring-data-elasticsearch与elasticsearch的对应关系表，但是不太完整，但是还是比较有参考价值的，具体表格如下：
| spring data elasticsearch | elasticsearch |
|---|---|
| 3.0.0.RC2 | 5.5.0 |
| 3.0.0.M4 | 5.4.0 |
| 2.0.4.RELEASE | 2.4.0 |
| 2.0.0.RELEASE | 2.2.0 |
| 1.4.0.M1 | 1.7.3 |
| 1.3.0.RELEASE | 1.5.2 |
| 1.2.0.RELEASE | 1.4.4 |
| 1.1.0.RELEASE | 1.3.2 |
| 1.0.0.RELEASE | 1.1.1 |
注意：elasticsearch的客户端版本必须与服务端版本主版本保持一致。
参考：https://www.elastic.co/guide/en/elasticsearch/client/java-api/current/client.html
The client must have the same major version (e.g. 2.x, or 5.x) as the nodes in the cluster. Clients may connect to clusters which have a different minor version (e.g. 2.3.x) but it is possible that new functionality may not be supported. Ideally, the client should have the same version as the cluster.
