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

Question

I am using Spring Data JPA 5.0.4 and am getting this error:

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...

This is my 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);
}

Here is how I scan the beans in applicationContext.xml:

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

   <tx:annotation-driven />

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

Solution 1

I had the same issue and it was because my entity has an attribute of type Map. Just change it for HashMap or similar.

Solution 2

I had the same exactly problem and I solve it setting @EntityScan(basePackages = {"com.mypackage.entity"})

Comments

[Gabriel Brito]

if someone else is search the answer for kotlin: stackoverflow.com/a/44213463/5749192

[njari]

Can you specify where exactly you added this annotation? On the Datasource configuration class? Or the Spring Application main class?