C# '；此图像格式的NodeCodeDeleteGate'；-AWS Lambda无服务器API中的Magick.NET

我正在使用Magick.NET调整图像大小并将其保存到AWS S3。我有一个Lambda无服务器Web API，它接受执行此操作的请求。它在本地运行时工作正常，但在Lambda上调用活动端点时工作不正常。我得到以下例外情况：

{
    "Timestamp": "2018-08-31T09:26:40.2561647+00:00",
    "Level": "Error",
    "MessageTemplate": "### Error resizing image. ###",
    "Exception": "ImageMagick.MagickMissingDelegateErrorException: NoDecodeDelegateForThisImageFormat `' @ error/blob.c/BlobToImage/456\n   at TAP.Services.TourManagementService.<AddImage>d__24.MoveNext() in C:\\######\\TourManagementService.cs:line 180\n--- End of stack trace from previous location where exception was thrown ---\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\n   at TAP.API.Tours.Controllers.ImagesController.<Post>d__3.MoveNext() in C:\\######\\ImagesController.cs:line 44\n--- End of stack trace from previous location where exception was thrown ---\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\n   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeActionMethodAsync>d__12.MoveNext()\n--- End of stack trace from previous location where exception was thrown ---\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\n   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeNextActionFilterAsync>d__10.MoveNext()\n--- End of stack trace from previous location where exception was thrown ---\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\n   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ActionExecutedContext context)\n   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)\n   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeInnerFilterAsync>d__14.MoveNext()\n--- End of stack trace from previous location where exception was thrown ---\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\n   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.<InvokeNextExceptionFilterAsync>d__23.MoveNext()",
    "Properties": {
        "ExceptionDetail": {
            "HResult": -2146233088,
            "Message": "NoDecodeDelegateForThisImageFormat `' @ error/blob.c/BlobToImage/456",
            "Source": "Magick.NET-Q16-AnyCPU",
            "RelatedExceptions": [
                {
                    "RelatedExceptions": [],
                    "Message": "UnableToOpenConfigureFile `magic.xml' @ warning/configure.c/GetConfigureOptions/714",
                    "Data": {},
                    "InnerException": null,
                    "TargetSite": null,
                    "StackTrace": null,
                    "HelpLink": null,
                    "Source": null,
                    "HResult": -2146233088
                }
            ],
            "Type": "ImageMagick.MagickMissingDelegateErrorException"
        }
    }
}

我以前在尝试读取本地文件时遇到过Lambda问题，因此我认为

UnableToOpenConfigureFile

可能也是一个类似的问题。然后，我使用GitHub指南（）使用代码初始化MagickNET，而不是依赖.xml文件，如下所示：

var configFiles = ConfigurationFiles.Default;
configFiles.Policy.Data = @"
    <policymap>
      <policy domain=""delegate"" rights=""none"" pattern=""*"" />
      <policy domain=""coder"" rights=""none"" pattern=""*"" />
      <policy domain=""coder"" rights=""read|write"" pattern=""{GIF,JPEG,PNG,WEBP}"" />
    </policymap>";
MagickNET.Initialize(configFiles);

---

这也无法帮助我。

缺少其他XML配置文件。尝试用lambda解决方案打包XML，并将

MAGICK\u CONFIGURE\u PATH

环境变量设置为文件的位置。感谢回复@emcconville。我刚试过，可惜没用。有关详细信息，请参见上面的编辑。

var configFiles = ConfigurationFiles.Default;
configFiles.Policy.Data = @"
    <policymap>
      <policy domain=""delegate"" rights=""none"" pattern=""*"" />
      <policy domain=""coder"" rights=""none"" pattern=""*"" />
      <policy domain=""coder"" rights=""read|write"" pattern=""{GIF,JPEG,PNG,WEBP}"" />
    </policymap>";
MagickNET.Initialize(configFiles);

MagickNET.Initialize("./MagickNet");