c# - 远程服务器返回错误 : (403) Forbidden in Asp.net C# Instagram.(HttpWebRequest)

Question

当我访问

response = request.GetResponse();// request is a HttpWebRequest's object

远程服务器返回错误:(403) Forbidden。错误。但是当我在我的浏览器 URL 中执行请求中的 url 时，它会被重定向到我指定的页面。

这是完整的代码。

string newPostLink = string.Format("https://instagram.com/oauth/authorize/?client_id={0}&redirect_uri=http://localhost:2163/Main.aspx&response_type=code&scope=basic", clientId); 

HttpWebRequest request =(HttpWebRequest) WebRequest.Create(newPostLink); 

request.AllowAutoRedirect = false; 
request.Referer = newPostLink;
request.Method = "POST"; 
request.ContentType = "application/x-www-form-urlencoded"; 
request.UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 7.1; Trident/5.0)";
request.Accept = "/"; 
request.UseDefaultCredentials = true; 
request.Credentials = CredentialCache.DefaultCredentials; 

if (request.Proxy != null)
{ 
  request.Proxy.Credentials = CredentialCache.DefaultCredentials; 
} 

var response = request.GetResponse();

Answer 1

这可能与您在 WebRequest 中发送的 UserAgent 字符串有关。 您可以尝试更改 UserAgent 字符串以模拟该请求来自 Firefox，然后查看它是否有效。