ASP.NET Web API 在本地工作，但在 AWS Lambda 上返回 SqlException 錯誤

Question

我正在嘗試在 aws lambda 上托管 Web API。 API 連接到 AWS RDS 上的數據庫。 數據庫確實正確存儲和提供數據。 問題是，當我在本地運行 API 時，它確實從數據庫中正確返回了數據，但是在將其部署到 lambda 之后，它返回了這個錯誤：

錯誤類型：SqlException

它沒有進一步解釋錯誤，我是 AWS 新手，所以我對如何解決這個錯誤一無所知，我嘗試在 AWS Api Gateway 上運行它，我得到了：

響應標頭：

{ "Content-Type":[""],"ErrorType":["SqlException"],"X-Amzn-Trace-Id":["Root=1-62d2052c-c1250f296445a5f4aa4daded;Sampled=0"]}

日志：

Execution log for request 9a72a4d9-d4a0-4a54-913a-4bfc8e0e8ef6
Sat Jul 16 00:24:12 UTC 2022 : Starting execution for request: 9a72a4d9-d4a0-4a54-913a-4bfc8e0e8ef6
Sat Jul 16 00:24:12 UTC 2022 : HTTP Method: GET, Resource Path: /api/Tutors
Sat Jul 16 00:24:12 UTC 2022 : Method request path: {proxy=api/Tutors}
Sat Jul 16 00:24:12 UTC 2022 : Method request query string: {}
Sat Jul 16 00:24:12 UTC 2022 : Method request headers: {}
Sat Jul 16 00:24:12 UTC 2022 : Method request body before transformations: 
Sat Jul 16 00:24:12 UTC 2022 : Endpoint request URI: https://lambda.us-east-1.amazonaws.com/2015-03-31/functions/arn:aws:lambda:us-east-1:204758858648:function:TutorMeAPI-AspNetCoreFunction-feH0JQ7qc1x8/invocations
Sat Jul 16 00:24:12 UTC 2022 : Endpoint request headers: {X-Amz-Date=20220716T002412Z, x-amzn-apigateway-api-id=ls9fcxi4k1, Accept=application/json, User-Agent=AmazonAPIGateway_ls9fcxi4k1, Host=lambda.us-east-1.amazonaws.com, X-Amz-Content-Sha256=cc12d58899f939a039dd7463ba42b4d9f8e4646a3e0e42e4cce39c3b1649c782, X-Amzn-Trace-Id=Root=1-62d2052c-c1250f296445a5f4aa4daded, x-amzn-lambda-integration-tag=9a72a4d9-d4a0-4a54-913a-4bfc8e0e8ef6, Authorization=*********************************************************************************************************************************************************************************************************************************************************************************************************************************************9bb3fc, X-Amz-Source-Arn=arn:aws:execute-api:us-east-1:204758858648:ls9fcxi4k1/test-invoke-stage/GET/{proxy+}, X-Amz-Security-Token=IQoJb3JpZ2luX2VjEHgaCXVzLWVhc3QtMSJGMEQCICsQ6ZsgSb71mpvgkJSp932NXHuR0pli4knXT6Sbs+prAiBtOsSbcS8pwTB6eF56E/ARbK5e7Jf8qMiqKYwIdg8D5SrcBAix/ [TRUNCATED]
Sat Jul 16 00:24:12 UTC 2022 : Endpoint request body after transformations: {"resource":"/{proxy+}","path":"/api/Tutors","httpMethod":"GET","headers":null,"multiValueHeaders":null,"queryStringParameters":null,"multiValueQueryStringParameters":null,"pathParameters":{"proxy":"api/Tutors"},"stageVariables":null,"requestContext":{"resourceId":"wqoa6e","resourcePath":"/{proxy+}","httpMethod":"GET","extendedRequestId":"VVW-_GJ3IAMFqDQ=","requestTime":"16/Jul/2022:00:24:12 +0000","path":"/{proxy+}","accountId":"204758858648","protocol":"HTTP/1.1","stage":"test-invoke-stage","domainPrefix":"testPrefix","requestTimeEpoch":1657931052514,"requestId":"9a72a4d9-d4a0-4a54-913a-4bfc8e0e8ef6","identity":{"cognitoIdentityPoolId":null,"cognitoIdentityId":null,"apiKey":"test-invoke-api-key","principalOrgId":null,"cognitoAuthenticationType":null,"userArn":"arn:aws:iam::204758858648:root","apiKeyId":"test-invoke-api-key-id","userAgent":"aws-internal/3 aws-sdk-java/1.12.239 Linux/5.4.196-119.356.amzn2int.x86_64 OpenJDK_64-Bit_Server_VM/25.332-b08 java/1.8.0_332 [TRUNCATED]
Sat Jul 16 00:24:12 UTC 2022 : Sending request to https://lambda.us-east-1.amazonaws.com/2015-03-31/functions/arn:aws:lambda:us-east-1:204758858648:function:TutorMeAPI-AspNetCoreFunction-feH0JQ7qc1x8/invocations
Sat Jul 16 00:24:33 UTC 2022 : Received response. Status: 200, Integration latency: 21292 ms
Sat Jul 16 00:24:33 UTC 2022 : Endpoint response headers: {Date=Sat, 16 Jul 2022 00:24:33 GMT, Content-Type=application/json, Content-Length=138, Connection=keep-alive, x-amzn-RequestId=60dad212-1480-4555-a950-b18629fac5cc, x-amzn-Remapped-Content-Length=0, X-Amz-Executed-Version=$LATEST, X-Amzn-Trace-Id=root=1-62d2052c-c1250f296445a5f4aa4daded;sampled=0}
Sat Jul 16 00:24:33 UTC 2022 : Endpoint response body before transformations: {"statusCode":500,"headers":{},"multiValueHeaders":{"Content-Type":[null],"ErrorType":["SqlException"]},"body":"","isBase64Encoded":false}
Sat Jul 16 00:24:33 UTC 2022 : Method response body after transformations: 
Sat Jul 16 00:24:33 UTC 2022 : Method response headers: {Content-Type=null, ErrorType=SqlException, X-Amzn-Trace-Id=Root=1-62d2052c-c1250f296445a5f4aa4daded;Sampled=0}
Sat Jul 16 00:24:33 UTC 2022 : Successfully completed execution
Sat Jul 16 00:24:33 UTC 2022 : Method completed with status: 500

我還注意到它確實返回了自動生成的默認控制器的數據，但對於我連接到數據庫的控制器，它們返回錯誤

這是我的控制器的一個例子：

namespace WebAPI.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class GroupsController : ControllerBase
    {
        private readonly WebAPIContext _context;

        public GroupsController(WebAPIContext context)
        {
            _context = context;
        }

        // GET: api/Groups
        [HttpGet]
        public async Task<ActionResult<IEnumerable<Group>>> GetGroup()
        {
            if (_context.Group == null)
            {
                return NotFound();
            }

            return await _context.Group.ToListAsync();
        }

        // GET: api/Groups/5
        [HttpGet("{id}")]
        public async Task<ActionResult<Group>> GetGroup(Guid id)
        {
            if (_context.Group == null)
            {
                return NotFound();
            }

            var @group = await _context.Group.FindAsync(id);

            if (@group == null)
            {
                return NotFound();
            }

            return @group;
        }
    }
}

這在本地有效，沒有問題。 lambda 可能有什么問題？ 感謝您的時間

Answer 1

Lambda 是一個運行方法/函數的無服務器計算環境。 您正在為您的 ASP.NET Web API 尋找托管解決方案。 查看將您的 ASP.NET Web API 部署到 Elastic Beanstalk。 托管使用 IIS 的 Web 應用程序的任何人都可以使用適用於 .NET 的 Elastic Beanstalk。

詳情在這里：

在 Elastic Beanstalk 上創建和部署 .NET 應用程序

如何使用 Elastic Beanstalk 部署 .NET 示例應用程序