前言

     springboot 專案啟動時遇到問題：
At least one JPA metamodel must be present! ，怎麼解決的呢，下面來一起看下。

正文

問題再現

Caused by: java.lang.IllegalArgumentException: At least one JPA metamodel must be present!
	at org.springframework.util.Assert.notEmpty(Assert.java:450)
	at org.springframework.data.jpa.mapping.JpaMetamodelMappingContext.<init>(JpaMetamodelMappingContext.java:55)
	at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:80)
	at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:44)
	at org.springframework.beans.factory.config.AbstractFactoryBean.afterPropertiesSet(AbstractFactoryBean.java:141)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1753)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1690)
	... 16 common frames omitted

 

解決

     將自動化載入持久化類排除在Spring容器中，問題解決

總結

     知識積累在不斷試錯中，過於一帆風順的學習對於我來說會丟失很多思考。