如何用jq向httpie会话文件的headers子键插入值并输出完整JSON

Got it, I see exactly what's going on here—your current jq command only returns the updated .headers sub-object instead of the full JSON structure you need. To fix this, you need to modify the .headers field in-place within the original parent object, rather than just returning the merged headers alone.

The Correct jq Command #

Use this command to keep the full JSON output while adding your new Cookie header:

jq '.headers += {"Cookie": "xyz"}'

Why This Works #

• The += operator tells jq to update the existing .headers field by merging the new key-value pair into it, instead of creating a standalone merged headers object.
• This preserves the entire original JSON structure, with the new Cookie entry added directly to the headers section.

Example Walkthrough #

Input JSON

{ "headers": { "Host": "34.213.0.202", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8", "User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:67.0) Gecko/20100101 Firefox/67.0", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate", "DNT": "1", "Connection": "keep-alive", "Upgrade-Insecure-Requests": "1", "Cache-Control": "max-age=0" } }

Output After Running the Command

{
  "headers": {
    "Host": "34.213.0.202",
    "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
    "User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:67.0) Gecko/20100101 Firefox/67.0",
    "Accept-Language": "en-US,en;q=0.5",
    "Accept-Encoding": "gzip, deflate",
    "DNT": "1",
    "Connection": "keep-alive",
    "Upgrade-Insecure-Requests": "1",
    "Cache-Control": "max-age=0",
    "Cookie": "xyz"
  }
}

Alternative Explicit Syntax #

If you prefer a more verbose (but equally valid) approach, you can reconstruct the full object explicitly:

jq '. | .headers = .headers + {"Cookie": "xyz"}'

This achieves the same result, but the += shorthand is cleaner for this specific use case.

内容的提问来源于stack exchange，提问作者170730350