BUG：

Error starting ApplicationContext. To display the auto-configuration report re-run your application with ‘debug’ enabled.
2021-03-22 15:32:47.486 ERROR 14072 — [ main] o.s.boot.SpringApplication : Application startup failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘dataSourceController’: Unsatisfied dependency expressed through field ‘dataManager’; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘dataManager’: Unsatisfied dependency expressed through …

解决方法：刚刚修改了mapper，有些地方写错了，好好检查。

报错信息中的mapper并不一定是实际有错的mapper。
启动就报错，mapper可能parameterType，resultType等有问题，比如resultMap写成了resultType；或者mapper中引用的类与java文件中的不一致；或者mapper执行id与mapper的java类不一致等