测试FastAPI FormData上传

问题描述

我正在尝试使用 Python 和 FastAPI 测试文件及其元数据的上传。

这是我定义上传路线的方式：

@app.post("/upload_files")
async def creste_upload_files(uploaded_files: List[UploadFile],selectedModel: str = Form(...),patientId: str = Form(...),patientSex: str = Form(...),actualMedication: str = Form(...),imageDim: str = Form(...),imageFormat: str = Form(...),dateOfScan: str = Form(...)):
    for uploaded_dicom in uploaded_files:
        upload_folder = "webapp/src/data/"
        file_object = uploaded_dicom.file
        #create empty file to copy the file_object to
        upload_folder = open(os.path.join(upload_folder,uploaded_dicom.filename),'wb+')
        shutil.copyfileobj(file_object,upload_folder)
        upload_folder.close()
    return "hello"

（我不使用元数据，但稍后再使用）。

我使用unittest进行测试：

class TestServer(unittest.TestCase):
    def setUp(self):
        self.client = TestClient(app)
        self.metadata = {
            "patientId": "1","patient_age": "M","patientSex": "59","patient_description": "test","actualeMedication": "test","dateOfScan": datetime.strftime(datetime.now(),"%d/%m/%Y"),"selectedModel": "unet","imageDim": "h","imageFormat": "h"
        }

    def tearDown(self):
        pass

    def test_dcm_upload(self):
        dicom_file = pydicom.read_file("tests/data/1-001.dcm")
        bytes_data = dicom_file.PixelData
   
        files = {"uploaded_files": ("dicom_file",bytes_data,"multipart/form-data")}
        response = self.client.post(
            "/upload_files",json=self.metadata,files=files
        )
        print(response.json())

但是似乎上传无效，我得到了响应的以下打印文字：

{'detail': [{'loc': ['body','selectedModel'],'msg': 'field required','type': 'value_error.missing'},{'loc': ['body','patientId'],'patientSex'],'actualMedication'],'imageDim'],'imageFormat'],'dateOfScan'],'type': 'value_error.missing'}]}

我可能应该使用Formdata而不是正文请求（json=self.metadata）进行上传，但是我不知道应该怎么做。

解决方法

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fastapi python upload