如何使用邮递员将文件发送到fastapi端点 [英] How to send file to fastapi endpoint using postman

问题描述

我面临使用邮递员测试api的困难.通过大幅度的文件上传功能可以正常工作，我在硬盘上保存了一个文件.我想了解如何与邮递员一起进行此操作.我使用标准方式来处理在使用django，flask时使用的文件.

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 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

但是使用fastapi时，我会得到一个错误

But with fastapi, 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}

我也尝试过 body->二进制文件:image.jpeg .但是得到了相同的结果

I also tried body -> binary: image.jpeg . But got the same result

推荐答案

我的代码:

from fastapi import FastAPI, UploadFile, File


app = FastAPI()


@app.post("/file/")
async def create_upload_file(file: UploadFile = File(...)):
    return {"filename": file.filename}

邮递员中的设置

如 https://github.com/tiangolo/fastapi/issues/1653 所述a>，文件的参数名称是您必须使用的键值.在使用key = file和value = image.png(或任何其他值)之前.相反，FastAPI接受file = image.png.因此，由于文件是必需的但不存在该错误(至少，不存在具有该名称的密钥)，因此导致错误.

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).

我用Postman v7.16.1进行了测试

I tested it with Postman v7.16.1

让我知道您是否仍然有问题.

Let me know if you still have problems.

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