Question

我想请求您帮助我快速编写以下代码，beucase我总是得到“403 FORBIDDEN”。

HttpWebRequest pozadavek = (HttpWebRequest)WebRequest.Create("LINK THAT ASKS FOR AUTHLOGIN"); //https
    System.IO.StreamReader stream = null;
    System.String result = null;
    public Form1()
    {
        InitializeComponent();
        pozadavek.AuthenticationLevel = System.Net.Security.AuthenticationLevel.MutualAuthRequested;
        pozadavek.Credentials = new NetworkCredential("NAME", "PASS");
        pozadavek.PreAuthenticate = true;
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        WebResponse webresponse = pozadavek.GetResponse(); //throws an exception:403 forbidden
        stream = new System.IO.StreamReader(webresponse.GetResponseStream());
        result = stream.ReadToEnd();
        this.webBrowser1.DocumentText = result;
    }

Answer 1

您尝试打开的网站需要基本身份验证。最重要的是，您需要在base64编码中包含您的请求的用户名/密码。幸运的是，.Net为您做到了这一点。像这样构建您的请求：

var credCache = new CredentialCache();
credCache.Add(new Uri("https://is.vsfs.cz/auth"), "Basic",
                  new NetworkCredential("user", "pwd"));
var request = (HttpWebRequest)WebRequest.Create(uri);
request.Credentials = credCache;

Here's one article更详细地解释了.Net中如何处理各种身份验证方案。

Answer 2

此代码适用于我...

Uri address = new Uri("https://www.example.com");
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(address);
string authInfo = username + ":" +password;
authInfo = Convert.ToBase64String(Encoding.UTF8.GetBytes(authInfo));
request.Headers.Add("Authorization", "Basic " + authInfo);
NetworkCredential myCreds = new NetworkCredential(username, password);
request.Credentials = myCreds;
request.Method = WebRequestMethods.Http.Get;
request.AllowAutoRedirect = true;
request.Proxy = null;

C＃HttpWebRequest - PreAuthenticate：仍然返回401禁止（HTTPS）

2 个答案: