c# – 字符串长度超过32768个字符时的Azure存储异常

发布时间：2020-12-15 23:49:22 所属栏目：百科来源：网络整理

导读：我的应用程序是ASP.NET Core 1.0 Web API.如果我的控制器返回一个小字符串,一切正常.但是如果字符串长度超过32768,我收到以下错误消息： --- End of stack trace previous location where exception was thrown ---?? at System.Runtime.CompillerServices.T

我的应用程序是ASP.NET Core 1.0 Web API.如果我的控制器返回一个小字符串,一切正常.但是如果字符串长度超过32768,我收到以下错误消息：

--- End of stack trace previous location where exception was thrown ---
?? at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
?? at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
?? at Microsoft.AspNetCore.Server.Kestrel.Internal.Htpp.Frame`1.<RequestProcessAsync>d__2.MoveNext()
Request Information
RequestID:440ed7db-0002-006f-742e-a28f82000000
RequestDate:Tue,21 Mar 2017 11:30:40 GMT
StatusMessage:Bad Request
ErrorCode:PropertyValueTooLarge

这是我的控制器：

[HttpGet]
[Produces("plain/text")]
public async Task<IActionResult> GetData()
{
    return this.Ok(this.GetResponse());
}

private string GetResponse()
{
    string retVal = string.Empty;
    for (int i = 0; i < 32769; i++)
    {
        retVal = retVal + "a";
    }
    return retVal;
}

完整的错误消息：

Microsoft.WindowsAzure.Storage.StorageException: BadRequest
   at Microsoft.WindowsAzure.Storage.Core.Executor.Executor.<ExecuteAsyncInternal>d__4`1.MoveNext() in C:Program Files (x86)Jenkinsworkspacerelease_dotnet_masterLibWindows RuntimeCoreExecutorExecutor.cs:line 315
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter`1.GetResult()
   at MyProjectNameLogging.AzureStorageLoggingConnector.<WriteToRequestLogAsync>d__4.MoveNext() in AzureStorageLoggingTable.cs:line 29
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.GetResult()
   at MyProjectNameLogging.Repositories.RequestLoggingRepository.<WriteToLogAsync>d__6.MoveNext() in RepositoriesRequestLoggingRepository.cs:line 36
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.GetResult()
   at MyProjectNameLogging.Middleware.RequestMiddleware.<Invoke>d__2.MoveNext() in MiddlewareRequestMiddleware.cs:line 69
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Swashbuckle.SwaggerUi.Application.SwaggerUiMiddleware.<Invoke>d__5.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Swashbuckle.SwaggerUi.Application.RedirectMiddleware.<Invoke>d__4.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Swashbuckle.Swagger.Application.SwaggerMiddleware.<Invoke>d__6.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Cors.Infrastructure.CorsMiddleware.<Invoke>d__7.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Server.IISIntegration.IISMiddleware.<Invoke>d__8.MoveNext()
--- End of stack trace previous location where exception was thrown ---
   at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Server.Hosting.Internal.RequestServiceContainerMiddleware.<Invoke>d__3.MoveNext()
--- End of stack trace previous location where exception was thrown ---
?? at System.Runtime.CompillerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
?? at System.Runtime.CompillerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
?? at Microsoft.AspNetCore.Server.Kestrel.Internal.Htpp.Frame`1.<RequestProcessAsync>d__2.MoveNext()
Request Information
RequestID:6d8afaf4-0002-00cd-1235-a2421e000000
RequestDate:Tue,21 Mar 2017 12:24:57 GMT
StatusMessage:Bad Request
ErrorCode:PropertyValueTooLarge

我想返回长度超过32768的字符串.

有什么建议吗？

解决方法

您遇到字符串属性类型( source)的Azure存储限制：

Edm.String (String) – A UTF-16-encoded value. String values may be up to 64 KB in size.

因为UTF-16编码的字符串需要2个字节来存储字符,所以最大字符串长度为32768个字符.

（编辑：李大同）

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