How to send JSON data to a server

How can I send my JSON data to a server?

Answer 1

[MathWorks Support Team]

The examples below show how you can send a JSON string or MATLAB data to a server with JSON encoding. This example will use the following server.

url = 'https://requestserver.mathworks.com';

If you already have a JSON string

Suppose you already have the following JSON string.

json = '[{"Name":"Jon","Job":"Doctor"},{"Name":"Sue","Job":"Engineer"}]'

The examples below show you how to send this JSON string to a server using webwrite or HTTP Interface.

Using webwrite

opts = weboptions();
opts.MediaType = 'application/json';
response = webwrite(url, json, opts);

Using HTTP Interface

import matlab.net.http.*
import matlab.net.http.field.*
mb = MessageBody;
mb.Payload = json;
request = RequestMessage('POST', ...
                [ContentTypeField('application/json')], ...
                mb)
response = request.send(url);

If you have MATLAB data which needs JSON encoding

Suppose you have the following MATLAB struct data.

employee(1).Name = 'Jon';
employee(1).Job = 'Doctor';
employee(2).Name = 'Sue';
employee(2).Job = 'Engineer';

The examples below show you how to send this MATLAB data to a server using webwrite or HTTP Interface with JSON encoding.

Using webwrite

opts = weboptions();
opts.MediaType = "application/json";
response = webwrite(url, employee, opts);

Using HTTP Interface

import matlab.net.http.*
import matlab.net.http.field.*
mb = MessageBody;
mb.Data = employee;
request = RequestMessage('POST', ...
                [ContentTypeField('application/json')], ...
                mb)
response = request.send(url);