java - Spring Data JPA 'jpaMappingContext' 错误，IllegalStateException : Expected to be able to resolve a type but got null

Question

我正在使用 Spring Data JPA 5.0.4 并收到此错误:

Error creating bean with name 'myRepository': Cannot resolve reference to bean 'jpaMappingContext' while setting bean property 'mappingContext'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is java.lang.IllegalStateException: Expected to be able to resolve a type but got null! This usually stems from types implementing raw Map or Collection interfaces! at...

这是我的 myRepository bean:

@Repository
public interface MyRepository extends CrudRepository<MyEvent, Long> {

    List<MyEvent> findAll();

    MyEvent save(MyEvent persisted);

    Optional<MyEvent> findById(Long id);

    Optional<MyEvent> findByMyEventId(long id);

    List<MyEvent> findByCurrentActivityTypeCd(BigDecimal id);

    List<MyEvent> findByCity(String city);
}

下面是我如何扫描 applicationContext.xml 中的 bean:

   <context:annotation-config />
   <context:spring-configured />
   <aop:aspectj-autoproxy />

   <tx:annotation-driven />

   <context:component-scan base-package="com.my.service, com.my.repository" />

Answer 1

我有同样的问题，这是因为我的实体有一个 Map 类型的属性。只需将其更改为 HashMap 或类似的。