c# - 来自Httpresponse的字符串未传递完整值

Question

嗨，我非常需要这里的帮助，

我正在发出Web请求，并使用Response.ContentLenth=2246获取json字符串，但是当我将其解析为一个字符串时，它仅给出100个字符，我对其进行追踪，发现它仅获得小于964的值。字符串长度仍为2246，但其余值只是(\0) null个字符。在下一行也给出错误Unterminated string passed in. (2246):

 FacebookFeed feed = sr.Deserialize<FacebookFeed>(data);

如果响应流中的字符数少于964个字符，则效果很好。

以下是最后一行中遇到的完整代码错误的摘要。

    System.Web.Script.Serialization.JavaScriptSerializer sr = new System.Web.Script.Serialization.JavaScriptSerializer();
    System.Net.HttpWebRequest req = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(@"https://graph.facebook.com/100000570310973_181080451920964");
    req.Method = "GET";
    System.Net.HttpWebResponse res = (System.Net.HttpWebResponse)req.GetResponse();

    byte[] resp = new byte[(int)res.ContentLength];
    res.GetResponseStream().Read(resp, 0, (int)res.ContentLength);
    string data = Encoding.UTF8.GetString(resp);
    FacebookFeed feed = sr.Deserialize<FacebookFeed>(data);

给出的错误是

Unterminated string passed in. (2246): {"id":"100000570310973_1810804519209........ (with rest of data in the string data including null chars)

以下是我的代码中使用的类的形状：

public class FacebookFeed
{
    public string id { get; set; }
    public NameIdPair from { get; set; }
    public NameIdPair to { get; set; }
    public string message { get; set; }
    public Uri link{get;set;}
    public string name{get; set;}
    public string caption { get; set; }
    public Uri icon { get; set; }
    public NameLinkPair[] actions { get; set; }
    public string type { get; set; }
    public NameIdPair application { get; set; } //Mentioned in Graph API as attribution
    public DateTime created_time { get; set; }
    public DateTime updated_time { get; set; }
    public FacebookPostLikes likes { get; set; }
}

public class NameIdPair
{
    public string name { get; set; }
    public string id { get; set; }
}

public class NameLinkPair
{
    public string name { get; set; }
    public Uri link{get; set;}
}

public class FacebookPostLikes
{
    public NameIdPair[] data { get; set; }
    public int count { get; set; }
}

Answer 1

您假设res.GetResponseStream().Read将一次性返回整个响应。实际上，Stream.Read()返回已读取的字节数-如果该数目小于您期望的数目，则需要继续调用它，直到获取所有响应块为止。您可以在http://msdn.microsoft.com/en-us/library/system.net.httpwebresponse.getresponsestream.aspx的示例中看到这一点。