c# - 将 POST FromBody 转换为 HttpRequestMessage - 需要反序列化请求正文

Question

我有工作的 REST 代码，可以使用 FromBody 接受 POST 消息。收到的参数是我需要处理的对象。现在，我需要检查 header 中的授权。我想通过将参数从对象切换到 HttpRequestMessage 来解决这个问题。当然，现在消息的内容必须转换为原始对象，我很难理解。

这是原始方法:

    [HttpPost]
    public IHttpActionResult Post([FromBody] CardStatusRoot cardStatus)
    {
        try
        {
            if (cardStatus == null)
            {
                return BadRequest("Card data not provided");
            }
            if (cardStatus.Data.TransactionType.ToLower() == "card")
            {
                //... Process;
            }
        }
        catch (Exception ex)
        {
            try
            {
                // Log the failure to fund the card
            }
            catch { }

            return InternalServerError();
        }
        return Ok();
    }

新代码，使用 HttpRequestMessage:

    [HttpPost]
    public IHttpActionResult Post(HttpRequestMessage request)   
    {
        // Get the authentication from the header
        var encoding = Encoding.GetEncoding("UTF-8");
        var authValue = encoding.GetString(Convert.FromBase64String(request.Headers.Authorization.Parameter));
        var validAuthorization = ConfigurationManager.AppSettings["ValidKey"];

        if (authValue != validAuthorization)
        {
            return BadRequest("Not Authorized");
        }

        // This does NOT compile - Need help converting request.Content to a CardStatusRoot object
        CardStatusRoot cardStatus = (CardStatusRoot)request.Content.ReadAsStringAsync().Result;

     ... Same as first method
    }

如何将请求的内容转换为 CardStatusRoot 对象？

Answer 1

ApiController 可以通过 Request 属性访问当前请求。

[HttpPost]
public IHttpActionResult Post([FromBody] CardStatusRoot cardStatus) {
    try {
        HttpRequestMessage request = this.Request;
        if (cardStatus == null) {
            return BadRequest("Card data not provided");
        }
        if (cardStatus.Data.TransactionType.ToLower() == "card") {
            //... Process;
        }
    } catch (Exception ex) {
        try {
            // Log the failure to fund the card
        }
        catch { }

        return InternalServerError();
    }
    return Ok();
}

也就是说，这个问题感觉更像是一个 XY problem .

你应该调查一下

Authentication Filters in ASP.NET Web API 2

Global Error Handling in ASP.NET Web API 2