Reputation: 488
I need to send files and data through FastAPI. I'm trying to send requests but couldn't get it to work
for example :
server:
import uvicorn
from fastapi import FastAPI, File
from pydantic import BaseModel
app = FastAPI()
class Data(BaseModel):
test1: str = None
test2: str = None
test3: str = None
@app.post("/uploadfile/")
async def create_file(
data: Data,
image: bytes = File(...),
):
return {"postdata": len(image),
"data": data.camera,
}
if __name__ == "__main__":
uvicorn.run(app)
client:
import requests
import cv2
import json
image = cv2.imread('/marti.jpg')
data2 = cv2.imencode(".jpg", image)[1]
payload = {"test1": "value_1", "test2": "value_2", "test3": "value_3"}
files = {
'image': ('a.jpg', data2.tobytes(), 'image/jpeg', {'Expires': '0'})
}
res = requests.post("http://localhost:8000/uploadfile/",
files=files, data=payload)
print(res.content)
print(res.status_code, res.json())
the error i got:
422 Unprocessable Entity
What are your suggestions in the face of this situation?
Upvotes: 2
Views: 4912
Reputation: 2380
You are getting Data
in JSON body.
If you want to do it you should do:
@app.post("/uploadfile/")
async def create_file(
test1: Optional[str] = Form(None),
test2: Optional[str] = Form(None),
test3: Optional[str] = Form(None),
image: bytes = File(...),
):
# Stuff here ...
PS: [How to use pydantic model with form data]
Upvotes: 4
Reputation: 8055
You cannot. See documentation here:
You can declare multiple
File
andForm
parameters in a path operation, but you can't also declareBody
fields that you expect to receive as JSON, as the request will have the body encoded usingmultipart/form-data
instead ofapplication/json
.This is not a limitation of FastAPI, it's part of the HTTP protocol.
This is typically either resolved by expecting a Form
as opposed to json
(see this answer here), or by having two independent endpoints; one that uploads the photo and returns a matching ID, and another that leverages that ID to send the json
data to.
Upvotes: 3