在API Gateway中，可以使用AWS CloudFormation将VPC Link和NLB附加到HTTP API的方法中。但是，在这个过程中，您可能会遇到“Invalid method setting path”错误。这个错误通常是由于API Gateway无法正确定位VPC Link或NLB而导致的。

下面是一些可能导致此错误并可能解决此错误的代码示例：

1. 检查VPC Link和NLB ARN是否正确，并确保它们没有语法错误。

Example VPC_Link resource:

Resources:
  MyApiGateway:
    Type: 'AWS::ApiGatewayV2::Api'
    Properties:
      Name: !Sub ${AWS::StackName}-MyApi
      ProtocolType: HTTP
      CorsConfiguration:
        AllowMethods:
          - GET
          - POST
          - PUT
          - DELETE
          - PATCH
        AllowOrigins:
          - '*'
        MaxAge: 300
  MyRoute:
    Type: 'AWS::ApiGatewayV2::Route'
    Properties:
      ApiId: !Ref MyApiGateway
      RouteKey: ANY /
      Target: integrations/${MyProxyIntegration.Arn}
  MyVpcLink:
    Type: 'AWS::ApiGatewayV2::VpcLink'
    Properties:
      Name: !Sub ${AWS::StackName}-MyVpcLink
      SecurityGroupIds:
        - !Ref InternalSG
      SubnetIds:
        - !Ref PrivateSubnetOne
        - !Ref PrivateSubnetTwo

Example NLB resource:

Resources:
  MyNetworkLoadBalancer:
    Type: 'AWS::ElasticLoadBalancingV2::LoadBalancer'
    Properties:
      Name: !Sub ${AWS::StackName}-MyNetworkLoadBalancer
      Scheme: internal
      Type: network
      Subnets:
        - !Ref PrivateSubnetOne
        - !Ref PrivateSubnetTwo
    DependsOn: PrivateSubnetOne

2. 确保正确地配置了MethodSetting路径。

Example MethodSetting resource:

MyHttpApi:
  Type: "AWS::ApiGatewayV2::Api"
  Properties:
    Name: "My-http-api"
    ProtocolType: "HTTP"
    RouteSelectionExpression: "request.method = $method"
MyIntegration:
  Type: "AWS::ApiGatewayV2::Integration"
  Properties:
    ApiId: !Ref MyHttpApi
    Description: "Http 2