在Cloudformation模板中为API网关启用CORS

问题描述：

我正在为我的环境创建AWS Cloudformation模板，但找不到为API网关方法启用CORS的方法。

I'm creating AWS Cloudformation template for my environment and I can't find a way to enable CORS for API Gateway method.

我可以使用AWS对其进行配置控制台（这是官方文档），但是如何在Cloudformation模板中做到这一点？

I can configure it using AWS console (here is the official doc), but how can I do it in the Cloudformation template?

答

经过反复试验，我发现以下CloudFormation模板代码段与CORS控制台向导相比，将产生等效的OPTIONS方法：

After some trial and error, I found that the following CloudFormation template snippet will produce an equivalent OPTIONS method when compared to the CORS console wizard:

OptionsMethod:
  Type: AWS::ApiGateway::Method
  Properties:
    AuthorizationType: NONE
    RestApiId:
      Ref: MyApi
    ResourceId:
      Ref: MyResourceOnWhichToEnableCORS
    HttpMethod: OPTIONS
    Integration:
      IntegrationResponses:
      - StatusCode: 200
        ResponseParameters:
          method.response.header.Access-Control-Allow-Headers: "'Content-Type,X-Amz-Date,Authorization,X-Api-Key,X-Amz-Security-Token'"
          method.response.header.Access-Control-Allow-Methods: "'POST,OPTIONS'"
          method.response.header.Access-Control-Allow-Origin: "'*'"
        ResponseTemplates:
          application/json: ''
      PassthroughBehavior: WHEN_NO_MATCH
      RequestTemplates:
        application/json: '{"statusCode": 200}'
      Type: MOCK
    MethodResponses:
    - StatusCode: 200
      ResponseModels:
        application/json: 'Empty'
      ResponseParameters:
          method.response.header.Access-Control-Allow-Headers: false
          method.response.header.Access-Control-Allow-Methods: false
          method.response.header.Access-Control-Allow-Origin: false

*注1 ：这是采用POST默认值的示例。显然，您需要更新 Access-Control-Allow-Methods 以包含所需的值。

*Note 1: This is an example of taking the defaults for a POST. Obviously, you'll need to update Access-Control-Allow-Methods to include the values you need.

*注2 ：非常感谢AWS CloudFormation团队最近引入了YAML支持。如果您需要转换为YAML / JSON，或从YAML / JSON进行转换，我发现此站点非常方便： http://www.json2yaml.com /

*Note 2: Kudos to the AWS CloudFormation team for recently introducing YAML support. If you need to convert to/from YAML/JSON, I have found this site handy: http://www.json2yaml.com/

在Cloudformation模板中为API网关启用CORS

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