一、解决datagrip连接ES7.4.2版本错误问题：

1.下载驱动

JDBC Client 7.4.2 | Elastic

Past Releases of Elastic Stack Software | Elastic

2.下载后解决签证问题 

current license is non-compliant for [jdbc]. 出现这样的报错信息的时候
使用postman发送一个Post请求给 es

localhost:9200/_license/start_trial?acknowledge=true&pretty
{"acknowledged" : true,"trial_was_started" : true,"type" : "trial"
}