c# Post数据cookie不工作

Question

好了，我写了一个函数，允许我用cookie发布数据。问题是，我在一个亚马逊登录页面上测试它，它一直回应说我需要启用cookie。下面是代码

public string DoPost(String url, PostData data, CookieContainer cookies)
{
    HttpWebRequest objWebRequest = (HttpWebRequest)WebRequest.Create(url);
    objWebRequest.CookieContainer = cookies;
    objWebRequest.AllowAutoRedirect = true;
    objWebRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)";
    if(data != null)
    {
        String post = data.ToString();
        objWebRequest.Method = "POST";
        objWebRequest.ContentLength = post.Length;
        objWebRequest.ContentType = "application/x-www-form-urlencoded";
        // Post to the login form.
        using(StreamWriter swRequestWriter = new StreamWriter(objWebRequest.GetRequestStream()))
        {
            swRequestWriter.Write(post);
        }
    }
    // Get the response.
    HttpWebResponse objWebResponse =
         (HttpWebResponse)objWebRequest.GetResponse();
    // Read the response
    using(StreamReader srResponseReader = new StreamReader(objWebResponse.GetResponseStream()))
    {
        string strResponseData = srResponseReader.ReadToEnd();
        return strResponseData;
    }
}

我这样称呼它

String action = "https://www.amazon.com/gp/flex/sign-in/select.html";
String s = DoPost(action, null, Cookies);

Cookies是在我的类构造函数中创建的，像这样

CookieContainer Cookies;
public Constructz0r()
{
    Cookies = new CookieContainer();
}

问题是，我甚至没有发布任何帖子数据，我只是去到页面，它说我的cookie没有启用，尽管我觉得我已经在DoPost中写过了。

我甚至试过使用这个WebClient的实现

    public class CookieWebClient : WebClient
    {
        private CookieContainer _cookieContainer = new CookieContainer();
        protected override WebRequest GetWebRequest(Uri address)
        {
            WebRequest request = base.GetWebRequest(address);
            if (request is HttpWebRequest)
            {
                (request as HttpWebRequest).CookieContainer = _cookieContainer;
            }
            return request;
        }
}

像这样调用

        using(CookieWebClient ck = new CookieWebClient())
        {
            String s =  ck.DownloadString(action);
        }

它仍然告诉我cookie没有启用

Answer 1

Amazon有一个API来访问其服务(SOAP)。因此，我强烈建议您使用他们的API，而不是尝试进行一些抓取。