为什么 @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW) 不提交？

Question

我有包含此代码的 OwnerService 类：

public RegisterOwnerResult registerOwner(RegisterOwnerRequest request) {
    try {
        Owner owner = doRegisterOwner(request);
        return RegisterOwnerResult.createSuccessful(owner.getId());
    } catch (Exception ex) {
        return RegisterOwnerResult.createUnsuccessful();
    }
}

@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
private Owner doRegisterOwner(RegisterOwnerRequest request) {
    Account account = new Account(request.getEmail(), request.getPassword());
    Owner owner = new Owner(account, request.getFirstName(), request.getLastName());

    ownerFacade.create(owner);

    return owner;
}

以及应该启动数据库的 Startup Singleton bean：

@PostConstruct
public void initiate() {
    RegisterOwnerRequest registerOwnerRequest = new RegisterOwnerRequest(
            "john.barton@example.com",
            "pass123",
            "John",
            "Barton"
    );
    RegisterOwnerResult registerOwnerResult = ownerService.registerOwner(registerOwnerRequest);
    if (registerOwnerResult.wasSuccessful()) {
        System.out.println("Owner ID: " + registerOwnerResult.getOwnerId());
    }
}

但不幸的是 registerOwnerResult.getOwnerId() 返回 null。我想原因是doRegisterOwner 方法没有提交对数据库的更改。我不知道它是功能还是错误，但我还是想让它工作。

Answer 1

这是设计使然。只有外部调用（即通过容器的代理/拦截系统来自其他 bean 的调用）尊重任何属性。

如果您希望在新事务中调用doRegisterOwner，请将该代码移至另一个会话 bean。或者干脆将注解移到OwnerService中的公共registerOwner方法中。