Python发送POST请求/multipart/form-data

Question

I'm just working on API conection at my work. I already made some GET and PUT request, but now i have problem with POST. API documantation is here . And here is my code I test but get 400 bad request:

import requests

files = {'files': ('fv.pdf', open(r"C:\python\API\fv.pdf", 'rb'))}
data = {"order_documents":[{'file_name':"fv.pdf", 'type_code':'CUSTOMER_INVOICE' }]}

header = {
    'Authorization': '###########################',
}
response = requests.post("https://######.com/api/orders/40100476277994-A/documents", headers=header, files = files, data = data)

print(response.status_code)
print(response.url)

Someone have any idea how i can handle with this?

Answer 1

Looks like you are missing the order_documents parameter, it needs to be an array and also needs to be called order_documents.

Try changing your data variable into:

data = {"order_documents": [ {'file_name':"fv.pdf", 'type_code':'CUSTOMER_INVOICE' } ] }

The API expects files as the parameter name and your dictionary sends file to the server. The parameter name files that you give to session.post is just for requests library and not the actual parameter sent to the server. The API also expects multiple files in an array, so you need to change your files object.

files = [
    ('files', ('fv.pdf', open(r"C:\python\API\fv.pdf", 'rb')),
]

Also, I don't think you need to use requests.Session(), just use requests.post(), unless you're planning on using the session object multiple times for subsequent requests.