How to set the body of a http post request in Matlab

Question

I'm trying to post to a restful service with Matlab. I've tried using webread, webwrite, and urlread and I cannot figure out how to set the body of the message.

My body is json and looks like this:

{"Item1": "string1", "Item2": "string2"}

You're trying to post to the service, so have you tried webwrite instead of webread? — Falimond
– Falimond, Commented Sep 21, 2015 at 2:55
Yes I have. Sorry for not listing that. I also tried webread with post in the weboptions object. — toshiomagic
– toshiomagic, Commented Sep 21, 2015 at 12:47
Have you tried passing the item names and values separately as outlined in the first paragraph of the documentation? mathworks.com/help/matlab/ref/webwrite.html — Falimond
– Falimond, Commented Sep 21, 2015 at 17:55
I'm using postman to log in and it works fine. But, because I am working from a vpn, I cannot use fiddler to intercept my web traffic and analyze it. — toshiomagic
– toshiomagic, Commented Sep 23, 2015 at 2:38

toshiomagic · Accepted Answer · 2015-09-23 02:58:06Z

I found out what I was doing wrong. I was constructing my body as a string literal and not as a matlab struct. Correct way:

api = 'http://myurl.net'; url = [api, '/Login']; [un, pw] = GetAuthentication; input = struct('Username',un,'Password',pw); opts = weboptions('MediaType','application/json'); userInfo = webwrite(url, input, opts);

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