在外壳中处理json（例如curl）时，如何正确地将多个jq语句链接在一起？

问题描述

我是jq的新手，所以如果这不是jq问题或json问题，请指出正确的方向。我不确定使用正确的术语，因此这使我很难正确表达问题。

I am new to jq so if this is not a jq question or a json question please point me in the right direction. I am not sure of the correct terminology so it is making it hard for me to properly articulate the problem.

我习惯于卷曲拉一些我想要的json筛选出具有特定值的键。以下是一些示例json：

I am using to curl to pull some json that I want to filter out keys with specific values. Here is some of the sample json:

{
  "id": "593f468c81aaa30001960e16",
  "name": "Name 1",
  "channels": [
    "593f38398481bc00019632e5"
  ],
  "geofenceProfileId": null
}
{
  "id": "58e464585180ac000a748b57",
  "name": "Name 2",
  "channels": [
    "58b480097f04f20007f3cdca",
    "580ea26616de060006000001"
  ],
  "geofenceProfileId": null
}
{
  "id": "58b4d6db7f04f20007f3cdd2",
  "name": "Name 3",
  "channels": [
    "58b8a25cf9f6e19cf671872f"
  ],
  "geofenceProfileId": "57f53018271c810006000001"
}

当我运行以下命令时：

curl -X GET -H 'authorization: Basic somestring=' "https://myserver/myjson" |
  jq '.[] | {id: .id, name: .name, channels: .channels, geofenceProfileId: .geofenceProfileId}' |
  jq '.[] | select(.channels == 58b8a25cf9f6e19cf671872f)'

我得到以下错误：

jq：错误：语法错误，意外的IDENT，期望';'或'）'（Unix shell引用问题？）在第1行：
。 select（.channels == 58b8a25cf9f6e19cf671872f）

jq：1编译错误
％接收的总百分比Xferd平均速度时间时间时间当前
加载上传的总剩余左速度
100351k 0 351k 0 0 1109k 0-：-：--：-：--：-：-1110k

jq: error: syntax error, unexpected IDENT, expecting ';' or ')' (Unix shell quoting issues?) at , line 1:.[] | select(.channels == 58b8a25cf9f6e19cf671872f)
jq: 1 compile error % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed100 351k 0 351k 0 0 1109k 0 --:--:-- --:--:-- --:--:-- 1110k

是错误是因为jq pretty打印第一条语句的输出，第二条语句期望它在一个代码块中？如果是这样，如何将其转换回非漂亮的打印格式，或者如何使用jq在输出上运行新的过滤器？

Is this error because jq pretty prints the output of the first statement and the second statement is expecting it to be in one code block? If so, how do I convert it back to non pretty print format or how can I use jq to run a new filter on the output?

基本上，我试图解析数百条记录，并过滤掉具有特定通道号或具有特定geofenceProfileId的所有记录。

Basically I am trying to parse hundreds of records and filter out all of the records that are in a specific channel number or have a specific geofenceProfileId.

推荐答案

我建议您开始：

jq 'select(.channels | index("58b8a25cf9f6e19cf671872f"))'

实际上，这可能甚至是您想要的过滤器。如果您要在选择后删除渠道，则可以按如下所示扩大过滤条件：

In fact, this might even be exactly the filter you want. If you want to remove the "channels" once you've made the selection, you could augment the filter above as follows:

select(.channels | index("58b8a25cf9f6e19cf671872f")) | del(.channels)

要注意的主要事情是，可以在一次调用内创建一个管道的所以最有可能的结果是： curl ... | jq ...

The main thing to note is that one can create a pipeline WITHIN a single invocation of jq. So most likely you'll end up with: curl ... | jq ...

jq表达式 { id：.id} 可以缩写为 {id} ，所以代替：

The jq expression {"id": .id} can be abbreviated to {id}, so instead of:

{id.id, name: .name, channels: .channels, geofenceProfileId: .geofenceProfileId}

您可以输入：

{id, name, channels, geofenceProfileId}

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