java.lang.IllegalStateException: Received message from unsupported version: [6.4.3] minimal compatible version is: [6.7.0]
    at org.elasticsearch.transport.InboundMessage.ensureVersionCompatibility(InboundMessage.java:137) ~[elasticsearch-7.0.0.jar:7.0.0]
    at org.elasticsearch.transport.InboundMessage.access$000(InboundMessage.java:39) ~[elasticsearch-7.0.0.jar:7.0.0]
    at org.elasticsearch.transport.InboundMessage$Reader.deserialize(InboundMessage.java:76) ~[elasticsearch-7.0.0.jar:7.0.0]
    at org.elasticsearch.transport.TcpTransport.messageReceived(TcpTransport.java:917) ~[elasticsearch-7.0.0.jar:7.0.0]
    at org.elasticsearch.transport.TcpTransport.inboundMessage(TcpTransport.java:753) [elasticsearch-7.0.0.jar:7.0.0]
 

在Pom.xml中添加

<properties>
    <elasticsearch.version>7.0.0</elasticsearch.version>
</properties>