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

Question

我正在尝试在 aws lambda 上托管 Web API。 API 连接到 AWS RDS 上的数据库。 数据库确实正确存储和提供数据。 问题是，当我在本地运行 API 时，它确实从数据库中正确返回了数据，但是在将其部署到 lambda 之后，它返回了这个错误：

错误类型：SqlException

它没有进一步解释错误，我是 AWS 新手，所以我对如何解决这个错误一无所知，我尝试在 AWS Api Gateway 上运行它，我得到了：

响应标头：

{ "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

我还注意到它确实返回了自动生成的默认控制器的数据，但对于我连接到数据库的控制器，它们返回错误

这是我的控制器的一个例子：

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;
        }
    }
}

这在本地有效，没有问题。 lambda 可能有什么问题？ 感谢您的时间

Answer 1

Lambda 是一个运行方法/函数的无服务器计算环境。 您正在为您的 ASP.NET Web API 寻找托管解决方案。 查看将您的 ASP.NET Web API 部署到 Elastic Beanstalk。 托管使用 IIS 的 Web 应用程序的任何人都可以使用适用于 .NET 的 Elastic Beanstalk。

详情在这里：

在 Elastic Beanstalk 上创建和部署 .NET 应用程序

如何使用 Elastic Beanstalk 部署 .NET 示例应用程序