Spring:方法注入查找如何使用它?
我可以使用方法注入查找 - 使用实体类吗?.I使用Spring + JPA + Hibernate。 这允许将一个原型bean注入到一个singleton bean中。这对于实体bean也是可能的吗?A是原型scoped bean。我想将A(@Entity)放入类为B(例如DAO)的scope = singleton.Thanks
@Entity
public class A(){
private String name;
private String surname;
...//get and set
}//A
public interface DAO{
public void method();
}//DAO
public class DAOImpl implements DAO{
private A object_a;
public void method(){
//In this method I use everytime a new istance of A
}//method
}//DAOImpl
你可以使用@Embedded来包含你的子bean,并在你的sql中使用。
@Entity
public class User(){
private String name;
@Embedded
private Address address;
@Bean(scope=DefaultScopes.PROTOTYPE)
public User() {
}
...//get and set
}
@Entity
public class Address(){
private String name;
...//get and set
}
public interface UserRepository extends JpaRepository<User, Long> {
@Query(value = "select u from users u where u.address.name = :addressName")
List<Blog> findUserByAddress(@Param("addressName") String addressName);
}
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