从外部站点调用的POST操作返回什么？

Question

我有一个Payment控制器，它公开了一个名为HttpPost的{​​{1}}操作方法。当我的外部支付服务向我发送立即付款通知（IPN）时，此操作将发布，其唯一目的是根据我在IPN中收到的数据更新我的数据。它永远不会返回视图，那么我的action方法应该返回什么？我确定付款服务需要HTTP 200或其他东西以响应IPN帖子。

Answer 1

您可以返回empty result：

return new EmptyResult();

Answer 2

return new HttpStatusCodeBoundedResult(200, "IPN accepted");
return new HttpStatusCodeBoundedResult(400, "Bad IPN request");

public class HttpStatusCodeBoundedResult : HttpStatusCodeResult
{
    /// <summary>
    /// Initializes a new instance of <see cref="HttpStatusCodeBoundedResult"/>.
    /// </summary>
    /// <param name="statusCode">The status code.</param>
    public HttpStatusCodeBoundedResult(int statusCode) : base(statusCode)
    {
    }

    /// <summary>
    /// Initializes a new instance of <see cref="HttpStatusCodeBoundedResult"/>.
    /// </summary>
    /// <param name="statusCode">The status code.</param>
    /// <param name="statusDescription">The status description. Will be 
    ///   truncated to  512 characters and have \r\n characters stripped.</param>
    public HttpStatusCodeBoundedResult(int statusCode, string statusDescription)
        : base(statusCode, ApplyHttpResponseBoundary(statusDescription, 512))
    {
    }

    private static string ApplyHttpResponseBoundary(string input, int length)
    {
        input = input.Replace("\r", string.Empty).Replace("\n", string.Empty);

        return input.Length <= length ? input : input.Substring(0, length);
    }
}

Answer 3

您可以让它返回void。