mistake:
Caused by: java.lang.IllegalStateException: Could not evaluate condition on org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration$EmbeddedDatabaseConfiguration due to org/springframework/jdbc/core/ConnectionCallback not found. Make sure
reason:
The springboot startup class file cannot be placed directly in the main/java folder, a package must be built to put it in
Solution: Put springboot into the outermost layer of a new package, and put other code into other packages in this package!
Such as:
