C＃中的Azure函數內容Webhook錯誤

Question

我在嘗試從內容豐富的Webhooks中獲取http響應時遇到問題。 我不斷收到此錯誤：

“ WebHook請求包含無效的JSON：'沒有MediaTypeFormatter可用於從媒體類型為'application / vnd.contentful.management.v1 + json的內容中讀取'JToken'類型的對象”

這是我的功能代碼：

#r "Newtonsoft.Json"


using System;
using System.Net;
using System.IO;
using System.Collections.Generic;
using Newtonsoft.Json;
using System.Net.Http.Headers;
using System.Net.Http.Formatting;
using System.Web.Http;


public static async Task<object> Run(HttpRequestMessage req, TraceWriter log)
{
  @json(body('formdataAction'));
  log.Info($"wjat");

  //    req.Headers.ContentType = new MediaTypeHeaderValue("application/json");

  log.Info($"Webhook was triggered!");
  string jsonContent = await req.Content.ReadAsStringAsync();
  // BodyParser.Of(BodyParser.TolerantJson.class);
  dynamic data = JsonConvert.DeserializeObject(jsonContent);

  log.Info(data.sys);

  if (data.first == null || data.last == null)
  {
    return req.CreateResponse(HttpStatusCode.BadRequest, new
    {
      error = "Please pass first/last properties in the input object"
    });
  }

  return req.CreateResponse(HttpStatusCode.OK, new
  {
      greeting = $"Hello {data.first} {data.last}!"
  });
}

Answer 1

問題是ReadAsAsync嘗試使用默認的媒體格式化程序，默認情況下僅允許application/json 。

當然，您也可以注冊以將json格式化程序用於內容類型，但是我建議您建議使用NewtonSoft.Json並執行類似的操作。

string json = await req.Content.ReadAsStringAsync();
dynamic data = JsonConvert.DeserializeObject(json);

這是與Contentful的webhook一起使用的完整功能：

#r "Newtonsoft.Json"

using System.Net;
using Newtonsoft.Json;

public static async Task<HttpResponseMessage> Run(HttpRequestMessage req, 
 TraceWriter log)
{
    log.Info("C# HTTP trigger function processed a request.");

    // Get request body
    string json = await req.Content.ReadAsStringAsync();
    log.Info($"Read json: {json}");
     dynamic data = JsonConvert.DeserializeObject(json);

    string deserialized = data?.ToString();

    return req.CreateResponse(HttpStatusCode.OK, deserialized);
}