创建/编辑用户时出现这个奇怪的错误。 错误如下所示：
从＆＃39; ReadTimeout＆＃39;获取值时出错on＆＃39; Microsoft.Owin.Host.SystemWeb.CallStreams.InputStream＆＃39;。
fiddler中的错误是：
{
"message": "An error has occurred.",
"exceptionMessage": "Error getting value from 'ReadTimeout' on 'Microsoft.Owin.Host.SystemWeb.CallStreams.InputStream'.",
"exceptionType": "Newtonsoft.Json.JsonSerializationException",
"stackTrace": " at Newtonsoft.Json.Serialization.DynamicValueProvider.GetValue(Object target)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.CalculatePropertyValues(JsonWriter writer, Object value, JsonContainerContract contract, JsonProperty member, JsonProperty property, JsonContract& memberContract, Object& memberValue)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeDictionary(JsonWriter writer, IDictionary values, JsonDictionaryContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeDictionary(JsonWriter writer, IDictionary values, JsonDictionaryContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.Serialize(JsonWriter jsonWriter, Object value, Type objectType)\r\n at Newtonsoft.Json.JsonSerializer.SerializeInternal(JsonWriter jsonWriter, Object value, Type objectType)\r\n at Newtonsoft.Json.JsonSerializer.Serialize(JsonWriter jsonWriter, Object value)\r\n at System.Net.Http.Formatting.BaseJsonMediaTypeFormatter.WriteToStream(Type type, Object value, Stream writeStream, Encoding effectiveEncoding)\r\n at System.Net.Http.Formatting.JsonMediaTypeFormatter.WriteToStream(Type type, Object value, Stream writeStream, Encoding effectiveEncoding)\r\n at System.Net.Http.Formatting.BaseJsonMediaTypeFormatter.WriteToStream(Type type, Object value, Stream writeStream, HttpContent content)\r\n at System.Net.Http.Formatting.BaseJsonMediaTypeFormatter.WriteToStreamAsync(Type type, Object value, Stream writeStream, HttpContent content, TransportContext transportContext, CancellationToken cancellationToken)\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.GetResult()\r\n at System.Web.Http.Owin.HttpMessageHandlerAdapter.<BufferResponseContentAsync>d__13.MoveNext()",
"innerException": {
"message": "An error has occurred.",
"exceptionMessage": "Timeouts are not supported on this stream.",
"exceptionType": "System.InvalidOperationException",
"stackTrace": " at System.IO.Stream.get_ReadTimeout()\r\n at Microsoft.Owin.Host.SystemWeb.CallStreams.DelegatingStream.get_ReadTimeout()\r\n at GetReadTimeout(Object )\r\n at Newtonsoft.Json.Serialization.DynamicValueProvider.GetValue(Object target)"
}
}
我试图找出导致它的原因，但我无法找到问题。 这是我的创建功能：
/// <summary>
/// Creates a user
/// </summary>
/// <param name="model">The bound user model</param>
/// <returns></returns>
[HttpPost]
[Route("")]
public async Task<IHttpActionResult> CreateUser(UserBindingModel model)
{
// Save our user to the database
return Ok(await Save(model));
}
/// <summary>
/// Used to save a user
/// </summary>
/// <param name="model">The model representing the user</param>
/// <returns></returns>
private async Task<IHttpActionResult> Save(UserBindingModel model)
{
// If our ModelState is invalid, return a bad request
if (!ModelState.IsValid)
return BadRequest(ModelState);
// Get the current userId and date
var userId = User.Identity.GetUserId();
var date = DateTime.UtcNow;
// Assign our binding model to a new model
var user = new User()
{
CompanyId = model.CompanyId,
UserName = model.Email,
Email = model.Email,
FirstName = model.FirstName,
LastName = model.LastName,
LastLoginDate = date,
Telephone = model.Telephone,
CreatedById = string.IsNullOrEmpty(model.CreatedById) ? userId : model.CreatedById,
DateCreated = string.IsNullOrEmpty(model.CreatedById) ? date : model.DateCreated,
ModifiedById = userId,
DateModified = date
};
// Create our result
var result = new IdentityResult();
// If we don't have a created by id
if (string.IsNullOrEmpty(model.CreatedById))
{
// Try to create the user
result = await this.UserService.CreateAsync(user);
// Send our the confirmation email
await SendConfirmationEmail(user.Id);
}
else // Else
{
// Try to update the user
result = await this.UserService.UpdateAsync(user);
}
// If the creation fails, return the error
if (!result.Succeeded)
return GetErrorResult(result);
// Return the result
return Ok(this.ModelFactory.Create(user));
}
/// <summary>
/// Used to send a confirmation email to the user specified
/// </summary>
/// <param name="userId">The id of the user we wish to send an email to</param>
/// <returns></returns>
private async Task SendConfirmationEmail(string userId)
{
// Generate our unique code
var code = await this.UserService.GenerateEmailConfirmationTokenAsync(userId);
// Create the callback url
var callbackUrl = new Uri(Url.Link("ConfirmEmailRoute", new { userId = userId, code = code }).Replace("api/users", "#/account"));
// Send the email
await this.UserService.SendEmailAsync(userId, "Confirm your account", "Please confirm your account by clicking <a href=\"" + callbackUrl + "\">here</a>");
}
有没有人之前有这个错误或知道是什么原因导致的？ 我用谷歌搜索了所有错误似乎与UserManager绑定，这很奇怪，但没有人有任何答案。
答案 0 :(得分：0)
这通常发生在最终通过Web API返回之前“双重包装”或嵌套结果时，您看到的异常是JSON序列化命中内部结果的不受支持的属性。
要解决此问题，请查看返回IHttpActionResult的所有方法。我很困惑为什么你在代码中包含CreateUser方法，因为它似乎没有被Save方法使用，这最初是我怀疑你的问题。如果您在CreateUser方法中 调用了Save并尝试返回结果，那么您将进行双重包装。