Caused by: java.lang.IllegalArgumentException: Not an managed type: class XXX

異常：

Caused by: java.lang.IllegalArgumentException: Not a managed type: class com.chhliu.springbooth2entity.User
    at org.hibernate.jpa.internal.metamodel.MetamodelImpl.managedType(MetamodelImpl.java:210) ~[hibernate-entitymanager-5.0.11.Final.jar:5.0.11.Final]
    at org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation.<init>(JpaMetamodelEntityInformation.java:70) ~[spring-data-jpa-1.10.6.RELEASE.jar:na]

解決：

1.檢查實體類上是否添加註解

　　@entity 和 @table

2. 定義包掃描註解 實體與數據庫表的映射關係 ，掃描實體類的配置路徑是否正確

<property name="packagesToScan" value="com.momoj.core.vo" />