Twitterizer抛出异常:反序列化对象时出现意外的标记:整数

时间:2011-11-30 05:03:49

标签: c# json exception twitter twitterizer

使用Twitterizer LookUp方法时,我遇到了JSON(反)序列化异常。例外情况说明:

  

反序列化对象时出现意外的标记:整数

以下是我的代码的大致内容:

// Populates the lookup options, requests the user details and processes the results
private void LookUpFollowersWithoutDetail(List<Follower> followersWithoutDetail)
{
    LookupUsersOptions lookupOptions = new LookupUsersOptions();

    for (int index = 0; index < followersWithoutDetail.Count && index < 100; index++)
    {
        lookupOptions.UserIds.Add(followersWithoutDetail[index].UserId);
    }

    RequestResult result = GetUserDetails(lookupOptions);
    // process the results
}

获取用户详细信息的方法如下所示:

// Performs the lookup and saves the users to the database
private RequestResult GetUserDetails(LookupUsersOptions lookupOptions)
{
    try
    {
        // Look up the followers
        TwitterResponse<TwitterUserCollection> userLookupResponse = 
            TwitterUser.Lookup(_tokens, lookupOptions); // <-- Throws Exception
        if (userLookupResponse.Result == RequestResult.Success)
        {
            SaveUserDetails(userLookupResponse);
        }
        return userLookupResponse.Result;
    }
    catch (Exception e)
    {
        Console.WriteLine("Exception in GetUserDetails: " + e.Message);
    }
    return RequestResult.Unknown;
}

我没有做任何花哨的事情,我只是在查找选项中放了一堆整数(用户ID&#39的追随者),然后用这些选项调用查找方法。大多数情况下,该方法工作正常,但每隔一段时间我就会得到本文开头提到的异常。有没有人遇到类似Twitterizer的问题,他们找到了解决方案吗?

更新(针对Ricky):

这是堆栈跟踪:

  

at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject,JsonReader reader,JsonObjectContract contract,String id)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateAndPopulateObject(JsonReader reader,JsonObjectContract contract,String id)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader,Type objectType,JsonContract contract,JsonProperty member,Object existingValue)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader,Type objectType,JsonContract contract,JsonProperty member,Object existingValue)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueProperty(JsonReader reader,JsonProperty property,Object target,Boolean gottenCurrentValue,Object currentValue)      在Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty属性,JsonReader阅读器,对象目标)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject,JsonReader reader,JsonObjectContract contract,String id)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateAndPopulateObject(JsonReader reader,JsonObjectContract contract,String id)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader,Type objectType,JsonContract contract,JsonProperty member,Object existingValue)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader,Type objectType,JsonContract contract,JsonProperty member,Object existingValue)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueProperty(JsonReader reader,JsonProperty property,Object target,Boolean gottenCurrentValue,Object currentValue)      在Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty属性,JsonReader阅读器,对象目标)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject,JsonReader reader,JsonObjectContract contract,String id)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateAndPopulateObject(JsonReader reader,JsonObjectContract contract,String id)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader,Type objectType,JsonContract contract,JsonProperty member,Object existingValue)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader,Type objectType,JsonContract contract,JsonProperty member,Object existingValue)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueNonProperty(JsonReader reader,Type objectType,JsonContract contract)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateList(IWrappedCollection wrappedList,JsonReader reader,String reference,JsonArrayContract contract)      at Newtonsoft.Json.Serialization.JsonSerializerInternalReader。&lt;&gt; c_ DisplayClass1.b _0(IList l,Boolean isTemporaryListReference)      at Newtonsoft.Json.Utilities.CollectionUtils.CreateAndPopulateList(Type listType,Action 2 populateList) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateAndPopulateList(JsonReader reader, String reference, JsonArrayContract contract) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateList(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue, String reference) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueNonProperty(JsonReader reader, Type objectType, JsonContract contract) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType) at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType) at Newtonsoft.Json.JsonSerializer.Deserialize(JsonReader reader, Type objectType) at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings) at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings) at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value) at Twitterizer.Core.SerializationHelper 1.Deserialize(Byte [] webResponseData,DeserializationHandler deserializationHandler)      在Twitterizer.Core.TwitterCommand 1.ExecuteCommand() at Twitterizer.Core.CommandPerformer.PerformAction[T](ICommand 1命令)      在Twitterizer.TwitterUser.Lookup(OAuthTokens令牌,LookupUsersOptions选项)      位于C:\ Users \ user \ Path \ To \ MyClass.cs中的OBFUSCATED.System.OBFUSCATED.GetUserDetails(LookupUsersOptions lookupOptions):第306行

以下是发生此异常时提供的用户ID列表:

-       lookupOptions.UserIds   Count = 100 Twitterizer.TwitterIdCollection
        [0] 39026441    decimal
        [1] 360825202   decimal
        [2] 377779483   decimal
        [3] 77599652    decimal
        [4] 199504556   decimal
        [5] 15290529    decimal
        [6] 15293368    decimal
        [7] 15295132    decimal
        [8] 15295838    decimal
        [9] 15300610    decimal
        [10]    15307479    decimal
        [11]    15314695    decimal
        [12]    15315646    decimal
        [13]    15316087    decimal
        [14]    15322893    decimal
        [15]    15324552    decimal
        [16]    15325815    decimal
        [17]    15330982    decimal
        [18]    15332031    decimal
        [19]    15332318    decimal
        [20]    15336542    decimal
        [21]    15338843    decimal
        [22]    15340130    decimal
        [23]    15341396    decimal
        [24]    15341681    decimal
        [25]    15342905    decimal
        [26]    15343278    decimal
        [27]    15351598    decimal
        [28]    15358123    decimal
        [29]    15361196    decimal
        [30]    15361723    decimal
        [31]    15363684    decimal
        [32]    15365834    decimal
        [33]    15366588    decimal
        [34]    15375866    decimal
        [35]    15377256    decimal
        [36]    15384679    decimal
        [37]    15384994    decimal
        [38]    15388036    decimal
        [39]    15388874    decimal
        [40]    15390556    decimal
        [41]    15397486    decimal
        [42]    15398320    decimal
        [43]    15401318    decimal
        [44]    15421131    decimal
        [45]    15421937    decimal
        [46]    15422192    decimal
        [47]    15433173    decimal
        [48]    15433807    decimal
        [49]    15435566    decimal
        [50]    15447574    decimal
        [51]    15448831    decimal
        [52]    15449755    decimal
        [53]    15450751    decimal
        [54]    15452924    decimal
        [55]    15456465    decimal
        [56]    15456590    decimal
        [57]    15458653    decimal
        [58]    15458901    decimal
        [59]    15461998    decimal
        [60]    15465107    decimal
        [61]    15467755    decimal
        [62]    15468099    decimal
        [63]    15470126    decimal
        [64]    15475251    decimal
        [65]    15475461    decimal
        [66]    15478303    decimal
        [67]    15479254    decimal
        [68]    15479572    decimal
        [69]    15479736    decimal
        [70]    15484821    decimal
        [71]    15487227    decimal
        [72]    15487287    decimal
        [73]    15489577    decimal
        [74]    15490132    decimal
        [75]    15501961    decimal
        [76]    15503943    decimal
        [77]    15505543    decimal
        [78]    15510316    decimal
        [79]    15515724    decimal
        [80]    15523378    decimal
        [81]    15526558    decimal
        [82]    15529204    decimal
        [83]    15538443    decimal
        [84]    15554417    decimal
        [85]    15564955    decimal
        [86]    15569189    decimal
        [87]    15575242    decimal
        [88]    15575635    decimal
        [89]    15578111    decimal
        [90]    15580710    decimal
        [91]    15585660    decimal
        [92]    15589332    decimal
        [93]    15594166    decimal
        [94]    15597341    decimal
        [95]    15603662    decimal
        [96]    15608792    decimal
        [97]    15618128    decimal
        [98]    15620785    decimal
        [99]    15620915    decimal
+       Raw View        

1 个答案:

答案 0 :(得分:1)

在调查之后,我确定Twitter没有改变任何东西。这似乎是一个真正的实时错误,与解析地理位置数据有关。

JSON.NET(Twitter用于反序列化json数据的库)将坐标值读取为long,但Twitterizer将其转换为double。

后面有两行代码,错误已修复。

如果您想自己应用补丁,修复程序位于Twitterizer2 \ Methods \ Geo \ Coordinate.cs

第119行成为:

result[itemIndex].Latitude = Convert.ToDouble(reader.Value);

第123行变为:

result[itemIndex].Longitude = Convert.ToDouble(reader.Value);