要实现Axon和Spring的仓库集成,可以按照以下步骤进行操作:
org.axonframework
axon-spring-boot-starter
4.5.1
org.springframework.boot
spring-boot-starter-data-jpa
@Entity
@Aggregate
public class OrderAggregate {
@AggregateIdentifier
@Id
private String orderId;
// Other fields and methods
}
@CommandHandler
public void handle(CreateOrderCommand command) {
// Create a new OrderAggregate instance and apply the appropriate events
}
public class CreateOrderCommand {
@TargetAggregateIdentifier
private String orderId;
// Other fields and methods
}
@EventHandler
public void handle(OrderCreatedEvent event) {
// Update the state of the OrderAggregate instance
}
public class OrderCreatedEvent {
private String orderId;
// Other fields and methods
}
JpaRepository
的接口,用于操作聚合根对象。例如:@Repository
public interface OrderRepository extends JpaRepository {
}
@Configuration
public class AxonConfig {
@Bean
public EventStorageEngine eventStorageEngine() {
return new InMemoryEventStorageEngine();
}
@Bean
public SpringAggregateSnapshotterFactoryBean snapshotter() {
return new SpringAggregateSnapshotterFactoryBean();
}
// Other configurations
}
OrderRepository
,并使用它来操作聚合根对象。例如:@Service
public class OrderService {
private final OrderRepository orderRepository;
public OrderService(OrderRepository orderRepository) {
this.orderRepository = orderRepository;
}
public void createOrder(CreateOrderCommand command) {
// Create a new OrderAggregate instance and save it using the repository
OrderAggregate order = new OrderAggregate(command.getOrderId());
orderRepository.save(order);
}
// Other methods
}
这样,就实现了Axon和Spring的仓库集成,可以使用Axon的命令和事件机制来操作和处理聚合根对象。请注意,以上代码示例仅为参考,具体实现可能因应用程序的需求而有所不同。