通过 jq 使一个（子）JSON 对象出现在一行上

Posted 2023-03-25

【中文标题】通过 jq 使一个（子）JSON 对象出现在一行上

【英文标题】：Make one (sub-)JSON object appearing on one line by jq

【发布时间】：2017-05-11 08:55:37

【问题描述】：

在 Cloud BigQuery 中，接受的 JSON 格式为：

一个 JSON 对象，包括任何嵌套/重复的字段，必须出现在每一行。

参考：https://cloud.google.com/bigquery/data-formats#json_format

现在，给定一个 json：

  "1": 
    "kind": "person",
    "fullName": "John Doe",
    "age": 22,
    "gender": "Male",
    "citiesLived": [
      
        "place": "Seattle",
        "numberOfYears": 5
      ,
      
        "place": "Stockholm",
        "numberOfYears": 6
      
    ]
  ,
  "2": 
    "kind": "person",
    "fullName": "Jane Austen",
    "age": 24,
    "gender": "Female",
    "citiesLived": [
      
        "place": "Los Angeles",
        "numberOfYears": 2
      ,
      
        "place": "Tokyo",
        "numberOfYears": 2
      
    ]
  

jqjq如何转换成如下？

"kind": "person", "fullName": "John Doe", "age": 22, "gender": "Male", "citiesLived": [ "place": "Seattle", "numberOfYears": 5, "place": "Stockholm", "numberOfYears": 6]
"kind": "person", "fullName": "Jane Austen", "age": 24, "gender": "Female", "citiesLived": ["place": "Los Angeles", "numberOfYears": 2, "place": "Tokyo", "numberOfYears": 2]

【参考方案1】：

这里的关键是“-c”选项，它实际上告诉 jq 使用 JSONLines 输出格式。

在您的特定情况下，解决方案很简单：

jq -c '.[]'

您的 shell 甚至可能允许您删除引号 :-)