Question

我要求让一个服务处理请求，将其转换为其他请求，将该请求传递给内部服务，获取响应，然后将其转换回外部服务响应。有些代码可能会更好地解释它。这就是我所做的：

public class InviteUserService : Service, IPost<Invitee>
{
    public RegistrationService RegistrationService { get; set; }

    public object Post(Invitee invitee)
    {
        // Do other invitation related work that is part of my domain.

        var registration = invitee.TranslateTo<Registration>();
        registration.UserName = invitee.EmailAddress;
        registration.Email = invitee.EmailAddress;

        // It previously threw a null ref exception until I added this.
        RegistrationService.RequestContext = RequestContext;

        var response = RegistrationService.Post(registration);
        if (response is RegistrationResponse)
        {
            var inviteeResponse = response.TranslateTo<InviteeResponse>();
            return inviteeResponse;
        }
        // Else it is probably an error and just return it directly to be handled by SS.
        return response;
    }
}

正如上面代码中的注释所示，在我传递RequestContext之前，它失败并出现NullReferenceException。既然我已经做到了它确实有效，但是我想知道我是否正在进入关于ServiceStack如何工作的上游战斗？这会不会给我带来更多问题？

如果这两项服务都在我的控制之下，我只需将注册码移动到一个单独的共享依赖项中。但是RegistrationService内置于ServiceStack中，除此之外似乎不能以任何其他方式调用。除非我遗失了什么？

Answer 1

将请求委托给ServiceStack中的其他服务的方法是为您base.ResolveService<T>致电public class InviteUserService : Service, IPost<Invitee> { public object Post(Invitee invitee) { // Do other invitation related work that is part of my domain. var registration = invitee.TranslateTo<Registration>(); registration.UserName = invitee.EmailAddress; registration.Email = invitee.EmailAddress; // Resolve auto-wired RegistrationService from IOC using (var regService = base.ResolveService<RegistrationService>()) { var response = regService.Post(registration); if (response is RegistrationResponse) { var inviteeResponse = response.TranslateTo<InviteeResponse>(); return inviteeResponse; } return response; } } }。这与您正在进行的操作基本类似，但由于这是执行此操作的官方API，因此如果需要执行任何其他操作，将会进行维护。

使用此API，您的服务将如下所示：

{{1}}

将ServiceStack请求转发给其他服务处理程序

1 个答案: