我注意到Twitterizer存在一個問題,它一直工作正常,直到我的客戶端向她的帳戶添加了一條推文,其中包含由Photobucket支持的圖像。Twitterizer-未將對象引用設置爲對象的實例
然後我們開始獲取上面的對象引用錯誤。我們花了一兩個小時才確定它實際上是引發我現在已經刪除的問題的推文,但是我怎樣才能解決這個問題?
我的代碼是下面這對於拉動時間線中一個非常基本的解決方案:
OAuthTokens tokens = new OAuthTokens();
tokens.AccessToken = AccessToken;
tokens.AccessTokenSecret = AccessTokenSecret;
tokens.ConsumerKey = ConsumerKey;
tokens.ConsumerSecret = ConsumerSecret;
try
{
UserTimelineOptions opts = new UserTimelineOptions();
opts.IncludeRetweets = false;
opts.UseSSL = true;
opts.Count = 5;
/* Throws Exception -> */ TwitterResponse<TwitterStatusCollection> timeLine = TwitterTimeline.UserTimeline(tokens, opts);
uxTweets.DataSource = timeLine.ResponseObject;
uxTweets.DataBind();
}
catch
{
uxError.Text = "<p class=\"p1\">Twitter isn't configured correctly. Twitter is not responding.</p>";
}
更新堆棧跟蹤布萊恩:
[NullReferenceException: Object reference not set to an instance of an object.]
Twitterizer.Entities.Converter.ReadJson(JsonReader reader, Type objectType, Object existingValue, JsonSerializer serializer) +1355
Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueProperty(JsonReader reader, JsonProperty property, Object target, Boolean gottenCurrentValue, Object currentValue) +165
Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonReader reader, Object target) +476
Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, String id) +702
Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateAndPopulateObject(JsonReader reader, JsonObjectContract contract, String id) +110
Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue) +867
Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue) +92
Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateList(IWrappedCollection wrappedList, JsonReader reader, String reference, JsonArrayContract contract) +495
Newtonsoft.Json.Serialization.<>c__DisplayClass1.<CreateAndPopulateList>b__0(IList l, Boolean isTemporaryListReference) +98
Newtonsoft.Json.Utilities.CollectionUtils.CreateAndPopulateList(Type listType, Action`2 populateList) +554
Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateAndPopulateList(JsonReader reader, String reference, JsonArrayContract contract) +103
Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateList(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue, String reference) +61
Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue) +119
Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueNonProperty(JsonReader reader, Type objectType, JsonContract contract) +130
Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType) +94
Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType) +47
Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings) +105
Newtonsoft.Json.JsonConvert.DeserializeObject(String value, JsonSerializerSettings settings) +74
Newtonsoft.Json.JsonConvert.DeserializeObject(String value) +42
Twitterizer.Core.SerializationHelper`1.Deserialize(Byte[] webResponseData, DeserializationHandler deserializationHandler) +91
Twitterizer.Core.TwitterCommand`1.ExecuteCommand() +2867
Twitterizer.TwitterTimeline.UserTimeline(OAuthTokens tokens, UserTimelineOptions options) +48
DataComuniqueUtils.Twitter.Page_Load(Object sender, EventArgs e) in C:\Users\Paul Stoker\Documents\Visual Studio 2010\Projects\DataComuniqueUtils\DataComuniqueUtils\Twitter.ascx.cs:41
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) +91
System.Web.UI.Control.LoadRecursive() +74
System.Web.UI.Control.LoadRecursive() +146
System.Web.UI.Control.LoadRecursive() +146
System.Web.UI.Control.LoadRecursive() +146
System.Web.UI.Control.LoadRecursive() +146
System.Web.UI.Control.LoadRecursive() +146
System.Web.UI.Control.LoadRecursive() +146
System.Web.UI.Control.LoadRecursive() +146
System.Web.UI.Control.LoadRecursive() +146
System.Web.UI.Control.LoadRecursive() +146
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2207
請包括來自異常的堆棧跟蹤。 – 2012-03-02 00:03:11
錯誤通常表示正在將某物分配給空對象。你能明確哪一行代碼觸發了這個嗎? – Bahamut 2012-03-04 13:06:13
感謝Bahamut,我編輯了帖子以顯示引發異常的位置。我不認爲Twitterizer.Entities庫已經更新,以處理圖像,除非我完全失去了一些東西? – Stokedout 2012-03-04 14:26:44