c# https post 请求 如何传参？总是报400错误。

Question

求大神，rest APi，url路径没有错，就是不知道参数错了没有，请大神指教。

Answer 1

byte[] byteArray = Encoding.UTF8.GetBytes(strxml.ToString());//需要传的参数
HttpWebRequest webReq = (HttpWebRequest)WebRequest.Create(new Uri("需要访问的地址"));
webReq.Method = "POST";//GET-POST
webReq.ContentType = "text/xml";//传的参数格式
webReq.ContentLength = byteArray.Length;
Stream newStream = webReq.GetRequestStream();
newStream.Write(byteArray, 0, byteArray.Length);//写入参数
newStream.Close();
HttpWebResponse response = (HttpWebResponse)webReq.GetResponse();
StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
resultxml = sr.ReadToEnd();
sr.Close();
response.Close();
newStream.Close();