My problem:

Running windows 7 and using the executable command line tool to curl my localhost server api for POST data was returning me an error that seems to be really common.

The request was being sent properly with the exception that the data was not reaching the server as it should causing my REST service to insert data with null values.

What seems to be causing the error: imagine something like this

1. curl -i -X POST -H 'Content-Type: application/json' -d '{"data1": "data goes here", "data2": "data2 goes here"}' http:localhost/path/to/api

Result of the returning data

curl: (6) Could not resolve host: application; No data record of requested type

curl: (6) Could not resolve host: data goes here,; No data record of requested type

curl: (6) Could not resolve host: data2; No data record of requested type

curl: (3) [globbing] unmatched close brace/bracket at pos 16

After some searching i figured out that problem couldn't be the sintax used for the request since it works on UNIX shells.

Are you possibly using Windows? That so looks like a completely broken shell that doesn't properly deal with single-quotes vs double-quotes. I just tried that command line and it worked fine on my linux box. http://curl.haxx.se/mail/archive-2011-03/0066.html

I tried to work around with those " escaping it \" but it still didn't work

2.

curl -i -X POST -H 'Content-Type: application/json' -d '{\"data1\": \"data goes here\", \"data2\": \"data2 goes here\"}' http: //localhost/path/to/api

3.

curl -i -X POST -H 'Content-Type: application/json' -d '{\"data1\"\: \"data goes here\", \"data2\"\: \"data2 goes here\"}' http: //localhost/path/to/api

So i gave up. Windows seems to messing up with the JSON object sent on POST