Spring JPA @Autowired CrudRepository始终为null

Question

我是春天的新手，正在尝试一些事情，

https://spring.io/guides/gs/accessing-data-jpa/#scratch

我按照上面的教程，所以现在我有：

客户实体：

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
import lombok.Data;

@Data
@Entity
@Table(name="clients")
public class ClientEntity {

    @Id
    @Column(name="_id")
    private long id;

    @Column(name="name")
    private String name;

    @Override
    public String toString(){
        return "["+this.id+"] ["+this.name+"]";
    }

}

和ClientRepository：

@Repository
public interface ClientRepository extends CrudRepository<ClientEntity, Long>    {}

persistence.xml：

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="relational-pu" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <class>sport.center.terminal.entities.ClientEntity</class>
    <properties>
    <property name="javax.persistence.jdbc.driver" value="org.sqlite.JDBC" />
    <property name="javax.persistence.jdbc.url" value="jdbc:sqlite:C:\\TerminalData\\terminal_database.db" />
    <property name="eclipselink.logging.level" value="ALL" />
    <property name="eclipselink.ddl-generation" value="create-tables" />
  </properties>
</persistence-unit>

JpaConfiguration：

@Configuration
@EnableAutoConfiguration
@EnableJpaRepositories("sport.center.terminal.repositories")
public class JpaConfiguration {

    // @Bean
    public Map<String, Object> jpaProperties() {
        Map<String, Object> props = new HashMap<String, Object>();

        // <!-- logging -->
        props.put("javax.persistence.jdbc.driver", "org.sqlite.JDBC");
        props.put("javax.persistence.jdbc.url", "jdbc:sqlite:C:\\TerminalData\\terminal_database.db");
        props.put("eclipselink.logging.level", "ALL");
        props.put("eclipselink.ddl-generation", "create-tables");

        return props;
    }

    @Bean(name = "entityManagerFactory")
    public EntityManagerFactory entityManagerFactory() {
        LocalContainerEntityManagerFactoryBean emf = new LocalContainerEntityManagerFactoryBean();
        emf.setPersistenceXmlLocation("classpath:META-INF/persistence.xml");
        emf.setJpaPropertyMap(this.jpaProperties());
        emf.setLoadTimeWeaver(new ReflectiveLoadTimeWeaver());

        emf.afterPropertiesSet();
        return emf.getObject();
    }

    @Bean
    public PlatformTransactionManager transactionManager() {
        return new JpaTransactionManager(entityManagerFactory());
    }
}

clientRepo始终为null：

class Test {
    @Autowired
    ClientRepository clientRepo;

    void doTest() {
        for (ClientEntity client : clientRepo.findAll())
            System.out.println(client);
    }
}