Question

有没有大侠告诉我一下 C# HttpClient 类怎么发POST请求 最好能有个Demo

public ActionResult MockHttp()
{
HttpClient client = new HttpClient();

var requestData = JsonConvert.SerializeObject(new { firstLetters = "ABCDE" });
HttpContent hc = new StringContent(requestData);
hc.Headers.ContentType = new MediaTypeHeaderValue("application/json");
var result = client.PostAsync("Url", hc).Result.Content.ReadAsStringAsync().Result;
return Content(result);
}
这是我目前写的 感觉有问题

Answer 1

你可以用这个，我当初写的

 string postData = "huas"; 
            byte[] data = Encoding.UTF8.GetBytes(postData);
            textBox3.Text = System.Text.Encoding.UTF8.GetString(data);

            HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(textBox1.Text);

            myReq.Method = "POST";
            myReq.ContentType = "application/x-www-form-urlencoded";
            myReq.ContentLength = data.Length;

            //StreamWriter stw = new StreamWriter(myReq.GetRequestStream());
            //stw.Write("hsfdg");
            //stw.Close();

            Stream outStream = myReq.GetRequestStream();
            outStream.Write(data, 0, data.Length);
            outStream.Close();

            // 获取服务器反馈结果
            using (HttpWebResponse response = (HttpWebResponse)myReq.GetResponse())
            {
                if (response.StatusCode != HttpStatusCode.OK)
                {
                    throw new Exception("返回结果错误！");
                }
                else
                {
                    StreamReader sr = new StreamReader(response.GetResponseStream());
                    textBox4.Text = sr.ReadToEnd();
                }
            }