Today, when debugging the program, it was good. Later, when restarting the service, it was stuck behind the log of com.alibaba.druid.pool.druiddatasource | {datasource-1} initiated, as shown in the figure

After a variety of debugging, restart or card here

Finally, I found that I made a breakpoint in a method of mapper interface, which is a real fucker

After canceling the breakpoint, it starts successfully