curl with json array - json

Question

The first command works and the second doesn't. What do I need to change to allow the json array to work? Thank you in advance.
command #1:
curl -d '{"uid":"TEST", "object":"TEST"}' \
-H "Content-Type: application/json" \
-X POST http://WEBSERVER/api/v1/inventory
command #2
curl -d '{"uid":"TEST","object":["server1", "server2", "server3"]}' \
-H "Content-Type: application/json" \
-X POST http://WEBSERVER/api/v1/inventory

Answer 1

Your curl syntax is fine, you could test by using httpbin.org, for example:
$ curl -d '{"uid":"TEST","object":["server1", "server2", "server3"]}' \
-H "Content-Type: application/json" \
-X POST http://httpbin.org/post
Returns:
{
"args": {},
"data": "{\"uid\":\"TEST\",\"object\":[\"server1\", \"server2\", \"server3\"]}",
"files": {},
"form": {},
"headers": {
"Accept": "*/*",
"Connection": "close",
"Content-Length": "57",
"Content-Type": "application/json",
"Host": "httpbin.org",
"User-Agent": "curl/7.54.0"
},
"json": {
"object": [
"server1",
"server2",
"server3"
],
"uid": "TEST"
},
"origin": "x.x.x.x",
"url": "http://httpbin.org/post"
}
You indeed could pipe the result and verify the output with your input:
$ curl -d '{"uid":"TEST","object":["server1", "server2", "server3"]}' \
-H "Content-Type: application/json" \
-X POST http://httpbin.org/post -s | jq -r '.data'
It will print:
{"uid":"TEST","object":["server1", "server2", "server3"]}
Probably the server you are using to post data don't accept your request, check the returned status code, could give a clue, maybe is a 400 (bad request) or a 406 (not acceptable) etc, just in case here is a list of possible status codes.