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743
ViewsHow to send file to fastapi endpoint using postman
I faced the difficulty of testing api using postman. Through swagger file upload functionality works correctly, I get a saved file on my hard disk. I would like to understand how to do this with the postman. I use the standard way to work with files which I use when working with Django, flask.
Body -> form-data: key=file, value=image.jpeg
But with fast API, I get an error
127.0.0.1:54294 - "POST /uploadfile/ HTTP/1.1" 422 Unprocessable Entity
main.py
@app.post("/uploadfile/")
async def create_upload_file(file: UploadFile = File(...)):
img = await file.read()
if file.content_type not in ['image/jpeg', 'image/png']:
raise HTTPException(status_code=406, detail="Please upload only .jpeg files")
async with aiofiles.open(f"{file.filename}", "wb") as f:
await f.write(img)
return {"filename": file.filename}
I also tried body -> binary: image.jpeg . But got the same result
2 answers
Answer question0
My code:
from fastapi import FastAPI, UploadFile, File
app = FastAPI()
@app.post("/file/")
async def create_upload_file(file: UploadFile = File(...)):
return {"filename": file.filename}
Setup in Postman
As stated in https://github.com/tiangolo/fastapi/issues/1653, the parameter name for the file is the key value that you have to use. Before you were using key=file and value=image.png (or whatever). Instead, FastAPI accepts file=image.png. Thus the error, since the file is necessary, but it is not present (at least, the key with that name is not present).
P.S. I tested it with Postman v7.16.1
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As mentioned in the response, I could see the key for the file uploaded is missing. Mention the key for the file in body params as file.