Receive data via HTTP

Question

Enrico Anderlini 2019-8-30

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/478252-receive-data-via-http

回答： Enrico Anderlini 2019-9-6

I need to access CSV-formatted data on a server, which requires a token for me to be granted access. My colleagues usually access this service with Python. However, as my code is all in MATLAB, I would prefer the data in MATLAB so that I can use my existing functions, which I have already verified.

In Python, we use the requests package as follows:

timeseries_url = 'https:// .... /csv'
payload = { 'variable': ['var1','var2'], 'platform_serial' : 'name_of_platform' , 'from' : 'start_time' , 'to' : 'end_time' }
header = {'Authorization': 'Bearer ' + 'authorisation_token'}
# Get the response:
response = requests.get(timeseries_url, headers=header, params=payload)
df = pandas.read_csv(io.StringIO(response.text))

I have been reading the MATLAB documentation for the HTTP interface. However, I have noticed there is no equivalent get command, but only the send.

I think the token should be entered in the matlab.net.http.HTTPOptions object as 'Credentials'. Similarly, the header could be the 'Header' matlab.net.http.RequestMessage. Besides, I think the payload could be obtained through 'getFields'. Are these assumptions correct?

How can I best achieve this task in MATLAB? Additionally, how can I change the data from CSV to matrices/cells for later use? I do not think using csvread or readmatrix here is appropriate.

My alternative is the MATLAB engine for Python, but I would prefer a neat, all-MATLAB solution.

Many thanks in advance for your help!