C＃HttpWebRequest的“请求头”，在JSON POST

Question

我翻译一个JSON API为C＃的方法，我遇到了一个问题，即在JSON RPC API（POST）说

其他所有方法都需要从认证结果（=的sessionId），或者每pathparameter

;jsessionid=644AFBF2C1B592B68C6B04938BD26965

或每个Cookie（RequestHeader）

JSESSIONID=644AFBF2C1B592B68C6B04938BD26965

我目前的WebRequest方法：

private async static Task<string> SendJsonAndWait(string json, string url, string sessionId) { 
     string result; 

     HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url); 
     httpWebRequest.ContentType = "application/json"; 
     httpWebRequest.Method = "POST"; 

     using(StreamWriter streamWriter = new StreamWriter(await httpWebRequest.GetRequestStreamAsync())) { 
      await streamWriter.WriteAsync(json); 
      streamWriter.Flush(); 
      streamWriter.Close(); 
     } 

     HttpWebResponse httpResponse = (HttpWebResponse)await httpWebRequest.GetResponseAsync(); 
     Stream responseStream = httpResponse.GetResponseStream(); 
     if(responseStream == null) 
      throw new Exception("Response Stream was null!"); 

     using(StreamReader streamReader = new StreamReader(responseStream)) { 
      result = await streamReader.ReadToEndAsync(); 
     } 

     return result; 
    } 

我如何JSESSIONID参数添加到我的WebRequest？我对WebRequests不是很熟悉，请简单解释一下！

谢谢！

Answer 1

使用Cookies。

你的情况看起来像这样;

private async static Task<string> SendJsonAndWait(string json, string url, string sessionId) { 
    Uri uri = new Uri(url); 
    string result; 

    HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url); 
    httpWebRequest.ContentType = "application/json"; 
    httpWebRequest.Method = "POST"; 

    //Add the JSESSIONID Cookie 
    if(httpWebRequest.CookieContainer == null) 
      httpWebRequest.CookieContainer = new CookieContainer(); 

    if(!string.IsNullOrWhiteSpace(sessionId)) 
      httpWebRequest.CookieContainer.Add(new Cookie("JSESSIONID", sessionId, "/", uri.Host)); 

    using(StreamWriter streamWriter = new StreamWriter(await httpWebRequest.GetRequestStreamAsync())) { 
     await streamWriter.WriteAsync(json); 
     streamWriter.Flush(); 
     streamWriter.Close(); 
    } 

    HttpWebResponse httpResponse = (HttpWebResponse)await httpWebRequest.GetResponseAsync(); 
    Stream responseStream = httpResponse.GetResponseStream(); 
    if(responseStream == null) 
     throw new Exception("Response Stream was null!"); 

    using(StreamReader streamReader = new StreamReader(responseStream)) { 
     result = await streamReader.ReadToEndAsync(); 
    } 

    return result; 
} 

Answer 2

您可以直接添加该令牌您的网址：

HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create($"{url}?jsessionid={sessionId}"); 

还是在标题：

HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create({url); 
httpWebRequest.Headers["JSESSIONID"] = sessionId;