APIGatewayProxyFunction 的空引用异常

Question

我终于设法让我的 API 进入可以将其上传到 AWS Lambda 的状态，然后每当我尝试使用 API Gateway 测试它时，都会收到以下错误。

{
  "errorType": "AggregateException",
  "errorMessage": "One or more errors occurred. (Object reference not set to an instance of an object.)",
  "stackTrace": [
    "at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)",
    "at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)",
    "at lambda_method(Closure , Stream , Stream , ContextInfo )"
  ],
  "cause": {
    "errorType": "NullReferenceException",
    "errorMessage": "Object reference not set to an instance of an object.",
    "stackTrace": [
      "at Amazon.Lambda.AspNetCoreServer.APIGatewayProxyFunction.MarshallRequest(InvokeFeatures features, APIGatewayProxyRequest apiGatewayRequest)",
      "at Amazon.Lambda.AspNetCoreServer.APIGatewayProxyFunction.<FunctionHandlerAsync>d__12.MoveNext()"
    ]
  }
}

代码：

public class LambdaEntryPoint : Amazon.Lambda.AspNetCoreServer.APIGatewayProxyFunction
{
    protected override void Init(IWebHostBuilder builder)
    {
        try
        {
            builder
                .UseContentRoot(Directory.GetCurrentDirectory())
                .UseStartup<Startup>()
                .UseApiGateway();
        }
        catch (Exception ex)
        {
            LambdaLogger.Log("Exception throw in LambdaEntryPoint: " + ex);
        }
    }
}

我没有从我的 Startup 或 LambdaEntryPoint 记录任何异常。我对 AWS 还很陌生，所以我不知道还要检查什么。

对这个有什么想法吗？

Answer 1

这可能与 AWS 的某人与其他人在 AWS github 存储库上针对 AWS .NET Lambda 集成解决的问题相同： https://github.com/aws/aws-lambda-dotnet/issues/168