异常信息 Misused header name, 'Content-Type'. Make sure request headers are used with HttpRequestMessage, response headers with HttpResponseMessage, and content headers with HttpContent objects. 改为 varrequest=newHttpRequestMessage();request.Content=JsonContent.Create(newDictionary<string,object>());...
明眼人一看,HttpClient 请求没有设置Content-Type,接收端没有识别出JSON 格式的 payload , 进行了转码,生成了错误签名。 ① Content-Type是一个Entity Header,指示资源的mediaType ,可用在请求/响应中 ② 代码中new StringContent(req.ReqPayload.ToString(),Encoding.UTF8) 没有指定mediaType参数,故函数会使用text/...
System.InvalidOperationException: Misused header name. Make sure request headers are used with HttpRequestMessage, response headers with HttpResponseMessage, and content headers with HttpContent objects. at System.Net.Http.Headers.HttpHeaders.GetHeaderDescriptor(String name) at System.Net.Http.Headers.Http...
This error means that you should set Content-Type header, try to add the following code to your Class. Since this address "https://www.myserver.com/api/MainCustomers_OnlineDates/Get_All_Customers" can’t be reached, would you mind sharing a basic reproducible demo to me so tha...