我编写了一个非常简单的 C# 应用程序来在 Windows 机器之间发送推文。为此，每个端点（即这个使用 TweetSharp 库的 C#.NET 桌面应用程序）都有一个计时器，当 Elapsed 事件触发时，所有消息都通过 GetDirectMessages() 调用收集在一起，然后这些消息由端点。
我的问题是我在两周前的几个小时内构建了这个，一切正常。我也把它掸掉并在一周前执行，没有问题。现在，我今天打破它，我得到了一个非常奇怪的异常（参见异常部分），它起源于“IEnumerable directMessage = service.ListDirectMessagesReceived();”这一行。（参见来源部分）。我的问题是，由于我的代码没有改变，API 是否有可能（我知道我知道极不可能）。StackO 的正直博学的成员有什么想法吗？
顺便说一句，我已经检查并且我的 ConsumerKey/Secret 有效，我的身份验证部分使用的缓存 OAuth 访问令牌也是有效的。这很奇怪，因为我可以拉出我的关注者列表，检查我的速率限制统计数据等。而且我的 NewtonSoft、Hammoch 和 TweetSharp 参考还没有更新/更改。
谢谢。
[资源]
private struct message
{
public long id;
public string text;
public message(long i, string t)
{
id = i;
text = t;
}
}
private MessageEngine
{
/* Do auth -- excised for obvious reasons */
Timer timer = new Timer();
timer.Interval = 15000;
timer.Tick += new EventHandler(timer_Tick);
timer.Start();
}
private List<message> GetDirectMessages()
{
try
{
//Declarations:
message message = new message();
List<message> messages = new List<message>();
/*line 344*/IEnumerable<TwitterDirectMessage> directMessages = service.ListDirectMessagesReceived();
//Fetch all current direct message:
foreach (TwitterDirectMessage directMessage in directMessages)
{
//Store each message into a list, in reverse older:
message = new message(directMessage.Id, directMessage.Text);
messages.Insert(0, message);
}
return messages;
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
return null;
}
}
private void timer_Tick(object sender, EventArgs e)
{
try
{
List<message> messages = GetDirectMessages();
LocalExecute(messages);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private bool LocalExecute(List<message> messages)
{
/* process messages */
}
[例外]
Newtonsoft.Json.JsonSerializationException: Cannot deserialize JSON array into type 'TweetSharp.TwitterDirectMessage'.
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureArrayContract(Type objectType, JsonContract contract) in d:\Development\Releases\Json\Working\Src\Newtonsoft.Json\Serialization\JsonSerializerInternalReader.cs:line 412
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateList(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue, String reference) in d:\Development\Releases\Json\Working\Src\Newtonsoft.Json\Serialization\JsonSerializerInternalReader.cs:line 432
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue) in d:\Development\Releases\Json\Working\Src\Newtonsoft.Json\Serialization\JsonSerializerInternalReader.cs:line 222
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueNonProperty(JsonReader reader, Type objectType, JsonContract contract) in d:\Development\Releases\Json\Working\Src\Newtonsoft.Json\Serialization\JsonSerializerInternalReader.cs:line 205
at TweetSharp.Serialization.SerializerBase.DeserializeJson(String content, Type type) in C:\Users\Dimebrain\Desktop\Src\tweetsharp\src\vs2010\TweetSharp.Next\Serialization\SerializerBase.cs:line 60
at TweetSharp.Serialization.JsonSerializer.AddDeserializedItem(String c, Type type, IList collection) in C:\Users\Dimebrain\Desktop\Src\tweetsharp\src\vs2010\TweetSharp.Next\Serialization\JsonSerializer.cs:line 131
at TweetSharp.Serialization.JsonSerializer.DeserializeCollection[T](String content) in C:\Users\Dimebrain\Desktop\Src\tweetsharp\src\vs2010\TweetSharp.Next\Serialization\JsonSerializer.cs:line 90
at TweetSharp.Serialization.JsonSerializer.Deserialize[T](String content) in C:\Users\Dimebrain\Desktop\Src\tweetsharp\src\vs2010\TweetSharp.Next\Serialization\JsonSerializer.cs:line 17
at Hammock.RestClient.DeserializeEntityBody[T](RestBase request, RestResponse`1 response) in C:\Users\Dimebrain\Desktop\Src\hammock\src\net35\Hammock\RestClient.cs:line 2285
at Hammock.RestClient.BuildResponseFromResult[T](RestBase request, WebQuery query) in C:\Users\Dimebrain\Desktop\Src\hammock\src\net35\Hammock\RestClient.cs:line 2212
at Hammock.RestClient.Request[T](RestRequest request) in C:\Users\Dimebrain\Desktop\Src\hammock\src\net35\Hammock\RestClient.cs:line 107
at TweetSharp.TwitterService.WithHammockImpl[T](RestRequest request) in C:\Users\Dimebrain\Desktop\Src\tweetsharp\src\vs2010\TweetSharp.Next\Service\TwitterService.cs:line 401
at TweetSharp.TwitterService.WithHammock[T](String path) in C:\Users\Dimebrain\Desktop\Src\tweetsharp\src\vs2010\TweetSharp.Next\Service\TwitterService.cs:line 378
at TweetSharp.TwitterService.WithHammock[T](String path, Object[] segments) in C:\Users\Dimebrain\Desktop\Src\tweetsharp\src\vs2010\TweetSharp.Next\Service\TwitterService.cs:line 383
at TweetSharp_Test.Form1.GetDirectMessages() in C:\Users\kmarks2\Documents\Visual Studio 2008\Projects\TweetSharp_Test\TweetSharp_Test\Form1.cs:line 344