如何使用节点 js 或 python 将带有转义字符串的 json 解析为更小的 json

Question

我正在使用 AWS 步骤函数并想用节点 js 或 python lambda 函数解析以下 json（语言无关, 我只需要结果):

{
  "stage": "dev",
  "server": {
    "instanceId": "i-xxxx",
    "status": "running"
  },
  "message": [
    {
      "MessageId": "xxx",
      "ReceiptHandle": "xxx",
      "MD5OfBody": "xxx",
      "Body": "{\n  \"stage\": \"DEV\",\n  \"id\": \"5\",\n \"results\": \"D:\\Temp\\results\"\n}",
      "Attributes": {
        "SenderId": "xxxx",
        "ApproximateFirstReceiveTimestamp": "xxx",
        "ApproximateReceiveCount": "1",
        "SentTimestamp": "xxx",
        "SequenceNumber": "xxx",
        "MessageDeduplicationId": "20",
        "MessageGroupId": "20"
      }
    }
  ]
}

我只需要 "message.Body"-部分。我想将其分成三个变量以进行进一步操作：

{
  "stage":"DEV",
  "id":"5",
  "results":"D:\Temp\results"
}

有人可以帮我解决这个问题吗？我刚刚花了最后一个小时 JSON.stringify ，解析，转义等等，不幸的是没有成功:(

提前致谢！

Answer 1

这个有用吗？

import json
jsondata = {
  "stage": "dev",
  "server": {
    "instanceId": "i-xxxx",
    "status": "running"
  },
  "message": [
    {
      "MessageId": "xxx",
      "ReceiptHandle": "xxx",
      "MD5OfBody": "xxx",
      "Body": "{\n  \"stage\": \"DEV\",\n  \"id\": \"5\",\n \"results\": \"D:\\Temp\\results\"\n}",
      "Attributes": {
        "SenderId": "xxxx",
        "ApproximateFirstReceiveTimestamp": "xxx",
        "ApproximateReceiveCount": "1",
        "SentTimestamp": "xxx",
        "SequenceNumber": "xxx",
        "MessageDeduplicationId": "20",
        "MessageGroupId": "20"
      }
    }
  ]
}
jsonbody = json.loads(jsondata.get('message')[0].get('Body'))
print(jsonbody)
# {'stage': 'DEV', 'id': '5', 'results': 'D:\Temp\results'}

Answer 2

这是我在 Python,

中的实现方式

import json

dic = {
  "stage": "dev",
  "server": {
    "instanceId": "i-xxxx",
    "status": "running"
  },
  "message": [
    {
      "MessageId": "xxx",
      "ReceiptHandle": "xxx",
      "MD5OfBody": "xxx",
      "Body": "{\n  \"stage\": \"DEV\",\n  \"id\": \"5\",\n \"results\": \"D:\\Temp\\results\"\n}",
      "Attributes": {
        "SenderId": "xxxx",
        "ApproximateFirstReceiveTimestamp": "xxx",
        "ApproximateReceiveCount": "1",
        "SentTimestamp": "xxx",
        "SequenceNumber": "xxx",
        "MessageDeduplicationId": "20",
        "MessageGroupId": "20"
      }
    }
  ]
}

message_body_str = dic['message'][0]['Body']
print(json.dumps(json.loads(message_body_str)))

如何使用节点 js 或 python 将带有转义字符串的 json 解析为更小的 json

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