报错内容关键部分：
Failed to instantiate [org.elasticsearch.client.transport.TransportClient]: Factory method 'transportClient' threw exception; nested exception is java.lang.NoClassDefFoundError: org/elasticsearch/common/transport/InetSocketTransportAddress
解决方法，添加依赖 transport-netty4-client Maven依赖：
<dependency>
<groupId>org.elasticsearch.plugin</groupId>
<artifactId>transport-netty4-client</artifactId>
<version>6.2.3</version>
</dependency>版本号根据elasticsearch的版本号做相应改变