我正在尝试使用dotnetopenauth和Facebook一起进行样例项目的工作。
我有以下代码：
namespace OAuthClient
{
using System;
using System.Configuration;
using System.Net;
using System.Web;
using DotNetOpenAuth.ApplicationBlock;
using DotNetOpenAuth.ApplicationBlock.Facebook;
using DotNetOpenAuth.OAuth2;
public partial class Facebook : System.Web.UI.Page
{
private static readonly FacebookClient client = new FacebookClient
{
ClientIdentifier = ConfigurationManager.AppSettings["facebookAppID"],
ClientSecret = ConfigurationManager.AppSettings["facebookAppSecret"],
};
protected void Page_Load(object sender, EventArgs e)
{
IAuthorizationState authorization = client.ProcessUserAuthorization();
if (authorization == null)
{
var authorizationState = new AuthorizationState()
{
Callback = new Uri(Request.Url, "http://localhost:3000/Facebook.aspx/")
};
client.PrepareRequestUserAuthorization(authorizationState).Send();
}
else
{
var request = WebRequest.Create("https://graph.facebook.com/me?access_token=" + Uri.EscapeDataString(authorization.AccessToken));
using (var response = request.GetResponse())
{
using (var responseStream = response.GetResponseStream())
{
var graph = FacebookGraph.Deserialize(responseStream);
this.nameLabel.Text = HttpUtility.HtmlEncode(graph.Name);
}
}
}
}
}
我先向Facebook发出请求，这很顺利。然后我收到了他们的响应，并进入了else语句。
但是，在变量graph = FacebookGraph.Deserialize(responseStream)处出现了错误。
Server Error in '/' Application.
Value was either too large or too small for an Int32.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.OverflowException: Value was either too large or too small for an Int32.
Source Error:
Line 49: }
Line 50:
Line 51: return (FacebookGraph)jsonSerializer.ReadObject(jsonStream);
Line 52: }
Line 53: }
Source File: C:\Users\user\Downloads\DotNetOpenAuth-3.5.0.10357\DotNetOpenAuth-3.5.0.10357\Samples\DotNetOpenAuth.ApplicationBlock\Facebook\FacebookGraph.cs Line: 51
Stack Trace:
[OverflowException: Value was either too large or too small for an Int32.]
System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) +7471379
System.Runtime.Serialization.Json.XmlJsonReader.ParseInt(String value, NumberStyles style) +68
[XmlException: The value '100000325104290' cannot be parsed as the type 'Int32'.]
System.Runtime.Serialization.Json.XmlJsonReader.ParseInt(String value, NumberStyles style) +259
System.Runtime.Serialization.Json.XmlJsonReader.ReadContentAsInt() +22
System.Xml.XmlDictionaryReader.ReadElementContentAsInt() +62
System.Runtime.Serialization.XmlReaderDelegator.ReadElementContentAsInt() +26
ReadFacebookGraphFromJson(XmlReaderDelegator , XmlObjectSerializerReadContextComplexJson , XmlDictionaryString , XmlDictionaryString[] ) +628
System.Runtime.Serialization.Json.JsonClassDataContract.ReadJsonValueCore(XmlReaderDelegator jsonReader, XmlObjectSerializerReadContextComplexJson context) +58
System.Runtime.Serialization.Json.JsonDataContract.ReadJsonValue(XmlReaderDelegator jsonReader, XmlObjectSerializerReadContextComplexJson context) +31
System.Runtime.Serialization.Json.XmlObjectSerializerReadContextComplexJson.ReadDataContractValue(DataContract dataContract, XmlReaderDelegator reader) +25
System.Runtime.Serialization.XmlObjectSerializerReadContext.InternalDeserialize(XmlReaderDelegator reader, String name, String ns, DataContract& dataContract) +128
System.Runtime.Serialization.XmlObjectSerializerReadContext.InternalDeserialize(XmlReaderDelegator xmlReader, Type declaredType, DataContract dataContract, String name, String ns) +39
System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(XmlReaderDelegator xmlReader, Type declaredType, DataContract dataContract, String name, String ns) +32
System.Runtime.Serialization.Json.DataContractJsonSerializer.InternalReadObject(XmlReaderDelegator xmlReader, Boolean verifyObjectName) +1048152
System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions(XmlReaderDelegator reader, Boolean verifyObjectName) +98
[SerializationException: There was an error deserializing the object of type DotNetOpenAuth.ApplicationBlock.Facebook.FacebookGraph. The value '100000325104290' cannot be parsed as the type 'Int32'.]
System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions(XmlReaderDelegator reader, Boolean verifyObjectName) +496
System.Runtime.Serialization.Json.DataContractJsonSerializer.ReadObject(XmlDictionaryReader reader) +43
System.Runtime.Serialization.Json.DataContractJsonSerializer.ReadObject(Stream stream) +67
DotNetOpenAuth.ApplicationBlock.Facebook.FacebookGraph.Deserialize(Stream jsonStream) in C:\Users\user\Downloads\DotNetOpenAuth-3.5.0.10357\DotNetOpenAuth-3.5.0.10357\Samples\DotNetOpenAuth.ApplicationBlock\Facebook\FacebookGraph.cs:51
OAuthClient.Facebook.Page_Load(Object sender, EventArgs e) in C:\Users\user\Downloads\DotNetOpenAuth-3.5.0.10357\DotNetOpenAuth-3.5.0.10357\Samples\OAuthClient\Facebook.aspx.cs:39
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
System.Web.UI.Control.OnLoad(EventArgs e) +99
System.Web.UI.Control.LoadRecursive() +50
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627
Version Information: Microsoft .NET Framework Version:2.0.50727.4952; ASP.NET Version:2.0.50727.4955
所以这个类被调用了
//-----------------------------------------------------------------------
// <copyright file="FacebookGraph.cs" company="Andrew Arnott">
// Copyright (c) Andrew Arnott. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.ApplicationBlock.Facebook {
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;
using System.Text;
[DataContract]
public class FacebookGraph {
private static DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(typeof(FacebookGraph));
[DataMember(Name = "id")]
public int Id { get; set; }
[DataMember(Name = "name")]
public string Name { get; set; }
[DataMember(Name = "first_name")]
public string FirstName { get; set; }
[DataMember(Name = "last_name")]
public string LastName { get; set; }
[DataMember(Name = "link")]
public Uri Link { get; set; }
[DataMember(Name = "birthday")]
public string Birthday { get; set; }
public static FacebookGraph Deserialize(string json) {
if (String.IsNullOrEmpty(json)) {
throw new ArgumentNullException("json");
}
return Deserialize(new MemoryStream(Encoding.UTF8.GetBytes(json)));
}
public static FacebookGraph Deserialize(Stream jsonStream) {
if (jsonStream == null) {
throw new ArgumentNullException("jsonStream");
}
return (FacebookGraph)jsonSerializer.ReadObject(jsonStream);
}
}
}
AccessToken是否有变化？它们现在更大了吗？
我知道这个示例使用的是比dotnetopenauth当前版本旧的版本，但当前版本不包括Facebook。