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java springboot如何写一个基于数据库的撮合交易系统?

java springboot如何写一个基于数据库的撮合交易系统?

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这个示例代码是一个简单的订单撮合交易系统,基于Spring Boot和Spring Data JPA,演示了订单的创建、撮合和交易记录的生成:

// 实体类
@Entity
public class Order {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    
    private Long userId;
    private String type; // "BUY" or "SELL"
    private BigDecimal price;
    private int quantity;
    private boolean matched;
    // ...其他字段、Getter和Setter
}

@Entity
public class Trade {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    
    private Long buyerId;
    private Long sellerId;
    private BigDecimal price;
    private int quantity;
    private LocalDateTime tradeTime;
    // ...其他字段、Getter和Setter
}

// 仓库接口
public interface OrderRepository extends JpaRepository<Order, Long> {
    List<Order> findByTypeAndMatchedOrderByPriceAsc(String type, boolean matched);
}

public interface TradeReposito...

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