Question

我有一个很大的JSON文本，需要使用

进行解析

jq --stream

但是，没有详尽的用例或博客可以理解这一点。

JSON结构如下：

{
  "userActivities": {
    "-----P9E3PJB5bTO1xrO": {
      "aaid": "84dae6bd-cb3a-409c-9940-844f035b5fc7",
      "callsign": "2day",
      "deviceId": "1b771f137d1bc6ea",
      "dow": "Thursday",
      "downloadFlag": "N",
      "email": "ckcafeandcatering@gmail.com",
      "emailSha256": "6ab0992297a9478be9ae7ff26d811b1116c45a0c819ff1c9628c9b7ca4ec4129",
      "event": "streamStop",
      "firebaseUID": "anvlMojJFvQEvMXQW6GeRzLKCIA2",
      "halfHourFull": "10h1",
      "liveFlag": "Y",
      "localDate": "1970-01-01",
      "localHalfHour": 1,
      "login": "google",
      "minutesSinceMidnight": 601,
      "quarterHourFull": "10q1",
      "stationName": "2DayFM104.1"
    },
    "-GuGCJDEprMKczAMDUj8": {
      "deviceId": "399a649c6cee6209",
      "dow": "Thursday",
      "downloadFlag": "N",
      "event": "streamStart",
      "halfHourFull": "18h1",
      "liveFlag": "Y",
      "localDate": "2009-01-01",
      "localHalfHour": 1,
      "minutesSinceMidnight": 1080,
      "quarterHourFull": "18q1",
      "stationName": "hit 105",
      "streamListenMethod": "Headphones",
      "timestampLocal": "2009-01-01T18:00:33.679+10:00",
      "timestampUTC": "2009-01-01T08:00:33.679Z"
    }
  }
}

我想在localDate上放置一个过滤器，即仅选择localDate ='2009-01-01'的那些数组。

当前，我正在将JSON输入以下命令，它会提供所有数组。

jq -cn --stream 'fromstream(1|truncate_stream(inputs | select(.[0][] == "userActivities") | del(.[0][0])))'

如何放置过滤器？请提示。任何帮助将不胜感激。

Answer 1

使用现有模板的输出：

附加此过滤器：
```
select(.localDate == "2009-01-01")
```

因此，您修改后的命令将变为：

jq -cn --stream 'fromstream(1|truncate_stream(inputs | select(.[0][] == "userActivities") | del(.[0][0]))) | select(.localDate == "2009-01-01")'

jq-解析json需要的流帮助

1 个答案:

使用现有模板的输出：