node.js - 如何使用 Node 12 为 AWS Lambda 函数创建事件响应？

Question

我正在查看的教程正在使用 Node 6.1 for AWS Lambda 函数

export.fn = (event,context,callback) {
    callback(null,event)
};

我想使用 Node.12。

exports.handler = async (event) => {
  // TODO implement
  const response = {
    statusCode: 200,
    body: JSON.stringify('Hello from G!'),
  };
  return response;
}

如何重写我的函数以使其可以接受 JSON 数据？

{
  "persondata": {
    "name": "Max",
    "length": 29
  }
}

响应正文

{
  "statusCode": 200,
  "body": "\"Hello from G!\""
}

日志

Mon Dec 16 11:38:57 UTC 2019 : HTTP Method: POST, Resource Path: /compare-yourself
Mon Dec 16 11:38:57 UTC 2019 : Method request path: {}
Mon Dec 16 11:38:57 UTC 2019 : Method request query string: {}
Mon Dec 16 11:38:57 UTC 2019 : Method request headers: {}
Mon Dec 16 11:38:57 UTC 2019 : Method request body before transformations: {
   "persondata" : {
     "name" : "Max", 
     "length" : 29
   }
}

Answer 1

您可以从 lambda 返回 json，如下所示:

exports.handler = async (event) => {
  // TODO implement
  const response = {
    statusCode: 200,
    body: JSON.stringify({
      "persondata": {
        "name": "Max",
        "length": 29
      }
    })
  };
  return response;
}