这是this question的后续内容。
使用以下代码：
mapPartitions // this is to manually initiate web fetch (as opposed to Facebook client)
public static String GetUrlText(String url)
{
var request = (HttpWebRequest)WebRequest.Create(url);
request.UserAgent = DefaultUserAgent;
if (UseProxyHost)
{
request.Proxy = Proxy;
request.Credentials = CredentialCache.DefaultNetworkCredentials;
}
using (var response = request.GetResponse())
using (var responseStream = response.GetResponseStream())
{
Debug.Assert(responseStream != null, "responseStream != null");
using (var sr = new StreamReader(responseStream))
{
string ret = sr.ReadToEnd();
return ret;
}
}
}
// initialization
string oauthUrl = $"https://graph.facebook.com/oauth/access_token?type=client_cred&client_id={appId}&client_secret={appSecret}";
string accessToken = client.DownloadString(oauthUrl).Split('=')[1];
var fbClient = new FacebookClient(accessToken);
var pageUrl = HttpUtility.UrlEncode("https://developers.facebook.com/docs/plugins/comments");
var getUrl = $"https://graph.facebook.com/v2.6/?fields=og_object{{comments}}&id={pageUrl}&access_token={accessToken}";
var urlText = GetUrlText(getUrl);
// getUrl can skip accessToken
var fbComments = fbClient.Get(getUrl);
和urlText都会收到如下所示的JSON内容。
我可以在Google Chrome中获得正确的结果（fbComments的复制粘贴），但我在IE11和C＃代码中收到400错误，其中包含以下内容：
pageUrl问题：如何正确请求数据，以便在IE11和C＃中都能正常工作？
答案 0 :(得分：0)
我弄明白为什么它不起作用。我的请求需要以下标题：
Accept-Language: en-US,en;q=0.8,ro;q=0.6
整个请求构造代码：
var request = (HttpWebRequest)WebRequest.Create(url);
// can be omitted (included to look like a real browser)
request.UserAgent = DefaultUserAgent;
// required
request.Headers.Add("Accept-Language", "en-US,en;q=0.8,ro;q=0.6");