Fn::ImportValue 与类型 {Array} 不匹配

Question

我在使用 CloudFormation 中的导出和导入功能时遇到了问题。当我尝试导入实际上是列表（数组）的值时，我收到以下错误消息“与类型 {Array} 不匹配”。

vpc.yaml（片段）

PrivateSubnets:
  Description: A list of the private subnets
  Value: !Join [",", [!Ref PrivateSubnetOne, !Ref PrivateSubnetTwo]]
  Export:
    Name: !Join ["-", [!Ref "Environment", "PrivateSubnets"] ]

pipeline.yaml（片段）

Subnets:
  Fn::ImportValue: !Sub "${Environment}-PrivateSubnets"

错误信息：

    Property validation failure: [Value of property {/VpcConfig/Subnets} does not match type {Array}

Answer 1

这段代码解决了这个问题；

Subnets: !Split 
   - ","
   - Fn::ImportValue: 
       !Sub "${Environment}-PrivateSubnets"