spring jpa RepositoryRestResource启动报错

Springboot JPA 启动报错

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 
'repositorySchemaController' defined in URL  Unsatisfied dependency expressed through constructor 
parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating 
bean with name 'jsonSchemaConverter' defined in class path resource 
[org/springframework/data/rest/webmvc/config/RepositoryRestMvcConfiguration.class]: Bean 
instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException:
 Failed to instantiate 
[org.springframework.data.rest.webmvc.json.PersistentEntityToJsonSchemaConverter]: Factory method 
'jsonSchemaConverter' threw exception; nested exception is 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name
'associationLinks' defined in class path resource 
[org/springframework/data/rest/webmvc/config/RepositoryRestMvcConfiguration.class]: Bean 
instantiation via factory method failed; nested exception is 
org.springframework.beans.BeanInstantiationException: Failed to instantiate 
[org.springframework.data.rest.webmvc.mapping.Associations]: Factory method 'associationLinks' threw 
exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating 
bean with name 'resourceMappings' defined in class path resource 
[org/springframework/data/rest/webmvc/config/RepositoryRestMvcConfiguration.class]: Bean 
instantiation via factory method failed; nested exception is 
org.springframework.beans.BeanInstantiationException: Failed to instantiate 
[org.springframework.data.rest.core.mapping.RepositoryResourceMappings]: Factory method 
'resourceMappings' threw exception; nested exception is 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'repositories' 
defined in class path resource 
[org/springframework/data/rest/webmvc/config/RepositoryRestMvcConfiguration.class]: Bean 
instantiation via factory method failed; nested exception is 
org.springframework.beans.BeanInstantiationException: Failed to instantiate 
[org.springframework.data.repository.support.Repositories]: Factory method 'repositories' threw exception; 
nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with 
name 'personRepository': Invocation of init method failed; nested exception is 
java.lang.IllegalArgumentException: Not a managed type: class com.example.demo2.Entity.Person

错误原因是Entity实体类没有加上@Entity注解。