Question

用sed中的-i等JQ来编辑json文件我找到了许多解决方案，比如

jq ... input.json > tmp.json && mv tmp.json input.json

这有效，但我需要对我的文件进行过滤，添加一些数据，然后将其放回原始数据中。（即更新文件中的特定对象）

我的文件包含超过1000个不同Element 的对象。我将永远使用Element上的过滤器，我缩短了问题。我有一个示例文件original.json ...

{
  "Element": "acton",
  "objectName": "contacts",
  "Path": "/contacts",
  "Scenario": "",
  "serviceLevel": "",
  "IBM": "",
  "Gap": "",
  "clientPhase": "",
  "parentPhase": "",
  "existsToday": ""
}
{
  "Element": "acton",
  "objectName": "optouts",
  "Path": "/optouts",
  "Scenario": "",
  "serviceLevel": "",
  "IBM": "",
  "Dependency": "",
  "Gap": "",
  "clientPhase": "",
  "parentPhase": "",
  "existsToday": ""
}
{
  "Element": "acton",
  "objectName": "subscriptionTypes",
  "Path": "/subscription-types",
  "Scenario": "",
  "serviceLevel": "",
  "IBM": "",
  "Dependency": "",
  "Gap": "",
  "clientPhase": "",
  "parentPhase": "",
  "existsToday": ""
}

我希望按objectName过滤contacts将一些数据添加到空IBM字段并保存到文件

将相同的逻辑应用到就地编辑包含"Y"的对象上的"objectName": "contacts"的IBM字段

jq 'select(.objectName == "contacts") | .IBM = "Y"' original.json > tmpjson.json && mv tmpjson.json original.json

现在我的文件original.json显示

{
  "Element": "acton",
  "objectName": "contacts",
  "Path": "/contacts",
  "Scenario": "",
  "serviceLevel": "",
  "IBM": "Y",
  "Dependency": "",
  "Gap": "",
  "clientPhase": "",
  "parentPhase": "",
  "existsToday": ""
}

预期结果

{
  "Element": "acton",
  "objectName": "contacts",
  "Path": "/contacts",
  "Scenario": "",
  "serviceLevel": "",
  "IBM": "Y",
  "Gap": "",
  "clientPhase": "",
  "parentPhase": "",
  "existsToday": ""
}
{
  "Element": "acton",
  "objectName": "optouts",
  "Path": "/optouts",
  "Scenario": "",
  "serviceLevel": "",
  "IBM": "",
  "Dependency": "",
  "Gap": "",
  "clientPhase": "",
  "parentPhase": "",
  "existsToday": ""
}
{
  "Element": "acton",
  "objectName": "subscriptionTypes",
  "Path": "/subscription-types",
  "Scenario": "",
  "serviceLevel": "",
  "IBM": "",
  "Dependency": "",
  "Gap": "",
  "clientPhase": "",
  "parentPhase": "",
  "existsToday": ""
}

使用select后，我似乎无法再使用提供的解决方案https://github.com/stedolan/jq/wiki/FAQ#general-questions

Answer 1

由于select选择，您的jq过滤器不是您需要的过滤器。也就是说，它会过滤掉与选择标准不匹配的对象。

这个jq过滤器可以做你想要的：

if (.objectName == "contacts") then .IBM = "Y" else . end

至于覆盖文件，许多有权访问sponge的人使用它，例如

jq 'if (.objectName == "contacts") then .IBM = "Y" else . end' input.json |
  sponge input.json

使用JQ Select后，JQ编辑文件到位

1 个答案: