Question

我正在为我的应用程序使用别人的REST服务。问题是每个请求在响应时可以返回3种不同类型中的1种要么：

预期的成功回复类型
包装500（Error）
验证错误响应（ValidationErrors）

我目前正在使用这样的类调用服务包装每个请求：

public class ApiResponse<T>
{
    public T ResponseObject { get; set; }
    public ValidationErrors<ValidationError> Errors { get; set; }
    public Error Error { get; set; }
}



 public async Task<ApiResponse<AMethodResponse>> AMethod(AMethodRequest req)
    {
        ApiResponse<AMethodResponse> resp = new ApiResponse<AMethodResponse> { Errors = new ValidationErrors<ValidationError>() };
        using (HttpClient client = HttpClientFactory.Create(new AuthorisationHandler(), new ContentTypeHandler()))
        {
            client.BaseAddress = new Uri(BaseURI);

            var httpResponseMessage = await client.PostAsXmlAsync<AMethodRequest>("AMethod/", req);
            if (!httpResponseMessage.IsSuccessStatusCode)
            {
//its at this point that I need to work out if i am getting Validation Errors or.. a plain Error
//I can do this, but of course if its a plain error it will fall over
                resp.Errors = await httpResponseMessage.Content.ReadAsAsync<ValidationErrors<ValidationError>>();
            }
            else
            {
                resp.ResponseObject = await httpResponseMessage.Content.ReadAsAsync<AMethodResponse>();
            }
        }
        return resp;
    }

我想知道编写消费方法是否有更可靠的模式。

感谢

Answer 1

它为所有人提供了200分。 400表示验证错误，500表示实际错误

直接检查状态代码，而不是使用IsSuccessStatusCode：

var httpResponseMessage = await client.PostAsXmlAsync<AMethodRequest>("AMethod/", req);

switch (httpResponseMessage.StatusCode)
{
    case HttpStatusCode.OK:  //200
        resp.ResponseObject = await httpResponseMessage.Content.ReadAsAsync<AMethodResponse>();
        break;

    case HttpStatusCode.BadRequest:  //400
        resp.Errors = await httpResponseMessage.Content.ReadAsAsync<ValidationErrors<ValidationError>>();
        break;

    case HttpStatusCode.InternalServerError:  //500
        throw new Exception("failed");  // use appropriate exception and/or read 500 wrapper
        break;
}

return resp;

使用REST服务，返回多种类型的方法..做什么

1 个答案: