使用重定向登录下载文件 C#

问题描述

我必须从 https://cddis.nasa.gov/archive/gnss/data/daily/ 下载文件 它将重定向到登录页面，我尝试了此代码但它不起作用。

ServicePointManager.Expect100Continue = true;
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

CookieContainer cookieJar = new CookieContainer();
CookieAwareWebClient http = new CookieAwareWebClient(cookieJar);

string postData = "name=****&password=****6&submit=submit";
string response = http.UploadString("https://urs.earthdata.nasa.gov/oauth/authorize?client_id=gDQnv1IO0j9O2xXdwS8KMQ&response_type=code&redirect_uri=https%3A%2F%2Fcddis.nasa.gov%2Fproxyauth&state=aHR0cDovL2NkZGlzLm5hc2EuZ292L2FyY2hpdmUvZ25zcy9kYXRhL2RhaWx5Lw",postData);

// validate your login! 

http.DownloadFile("https://cddis.nasa.gov/archive/gnss/data/daily/2021/brdc/brdc1170.21n.gz","brdc.21n.gz");

这是我的 CookieAwareWebClient 类：

class CookieAwareWebClient: WebClient
{
    public CookieContainer CookieContainer { get; set; }
    public Uri Uri { get; set; }

    public CookieAwareWebClient()
        : this(new CookieContainer())
    {
    }

    public CookieAwareWebClient(CookieContainer cookies)
    {
        this.CookieContainer = cookies;
    }

    protected override WebRequest GetWebRequest(Uri address)
    {
        WebRequest request = base.GetWebRequest(address);
        if (request is HttpWebRequest)
        {
            (request as HttpWebRequest).CookieContainer = this.CookieContainer;
        }
        HttpWebRequest httpRequest = (HttpWebRequest)request;
        httpRequest.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
        return httpRequest;
    }

    protected override WebResponse GetWebResponse(WebRequest request)
    {
        Console.WriteLine(request.ToString());
        WebResponse response = base.GetWebResponse(request);
        String setCookieHeader = response.Headers[HttpResponseHeader.SetCookie];

        if (setCookieHeader != null)
        {
            //do something if needed to parse out the cookie.
            if (setCookieHeader != null)
            {
                Cookie cookie = new Cookie(); //create cookie
                this.CookieContainer.Add(cookie);
            }
        }
        return response;
    }
}

最后，我无法下载并收到错误 System.Net.WebException：'远程服务器返回错误：(500) 内部服务器错误。' 我仍然不明白我的问题，我该如何解决？ 谢谢

解决方法

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