這個也解決了，把數據庫表刪了手動再建一個，yml里面改為update，就好了。。。

你的能跑起來嗎？我的報錯

org.springframework.beans.factory.UnsatisfiedDependencyException:?Error?creating?bean?with?name?'girlController':?Unsatisfied?dependency?expressed?through?method?'setGirlRepository'?parameter?0;?nested?exception?is?org.springframework.beans.factory.BeanCreationException:?Error?creating?bean?with?name?'girlRepository':?Invocation?of?init?method?failed;?nested?exception?is?java.lang.IllegalArgumentException:?Not?a?managed?type:?class?com.example.demo.Girl