Python利用fastapi实现上传文件

from fastapi import FastAPI, File
 ​
app = FastAPI()
 ​
@app.post("/files/")
async def create_file(file: bytes = File()):
   return {"file_size": len(file)}

from fastapi import FastAPI, UploadFile
 ​
app = FastAPI()
 ​
@app.post("/uploadfile/")
async def create_upload_file(file: UploadFile):
     return {"filename": file.filename}

 # 获取文件内容
 contents = await myfile.read()

 from typing import UNIOn
 ​
 from fastapi import FastAPI, File, UploadFile
 ​
 app = FastAPI()
 ​
 ​
 @app.post("/files/")
 async def create_file(file: Union[bytes, None] = File(default=None)):
     if not file:
         return {"message": "No file sent"}
     else:
         return {"file_size": len(file)}
 ​
 ​
 @app.post("/uploadfile/")
 async def create_upload_file(file: Union[UploadFile, None] = None):
     if not file:
         return {"message": "No upload file sent"}
     else:
         return {"filename": file.filename}

 from typing import List
 ​
 from fastapi import FastAPI, File, UploadFile
 ​
 app = FastAPI()
 ​
 ​
 @app.post("/files/")
 async def create_files(files: List[bytes] = File()):
     return {"file_sizes": [len(file) for file in files]}
 ​
 ​
 @app.post("/uploadfiles/")
 async def create_upload_files(files: List[UploadFile]):
     return {"filenames": [file.filename for file in files]}

pip install fastapi

pip install "uvicorn[standard]"

from fastapi import FastAPI

app = FastAPI()

@app.get("/")
def read_root():
return {"Hello": "World"}

@app.get("/items/{item_id}")
def read_item(item_id: int, q: str = None):
return {"item_id": item_id, "q": q}