Zookeeper request timeout problem in dubbo: configuration of mybatis+spring connecting to mysql8.0.15

I am going to review Java these two days, so I wrote a shopping mall project using dubbo to practice, but I got stuck on the first test. I started the provider service and the consumer service, but the request interface always reported a zookeeper request timeout error (dubbo+zookeeper server repeated the call three times). After investigation, my problem lies in the connection between the dao layer and the database (and the provider side did not report an error, I am also R... Ten thousand words are omitted here, everything else is normal. If your problem is not in the dao layer connecting to the database, this article may not be of much help to you). The dao layer uses mybatis+spring to connect to the mysql database version 8.0.15

I used mysql5 originally, but then my computer broke down and I had to reinstall the system. I installed the latest version of mysql8, but I didn’t expect that there would be problems. I wasted an entire night. Sigh…
Let’s get to the point:

First, let's configure the dao layer:

Configure in db.properties.

SqlMapConfig.xml configuration details

Spring configuration file

The above is the problem.

Summarize

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