我从这个问题获取了上传视频文件的代码;但是,出现错误。
这是从相册中选择视频的代码:
var videoURL: URL?
extension ViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
picker.dismiss(animated: true, completion: nil)
if let pickedVideo = info[UIImagePickerController.InfoKey.mediaURL] as? URL {
videoURL = pickedVideo
}
这是将视频上传到服务器的代码:
func uploadImage(imageURL: URL?) {
let URL = "http://127.0.0.1:8000/uploadfiles"
let header : HTTPHeaders = [
"Content-Type" : "application/json"]
let timestamp = NSDate().timeIntervalSince1970
AF.upload(multipartFormData: { multipartFormData in
multipartFormData.append(imageURL!, withName: "video", fileName: "\(timestamp).mp4", mimeType: "\(timestamp).mp4")
}, to: URL, usingThreshold: UInt64.init(), method: .post, headers: header).response { response in
guard let statusCode = response.response?.statusCode,
statusCode == 200
else { return }
@IBAction func ButtonClicked(_ sender: UIButton) {
do {
uploadImage(imageURL: videoURL!)
} catch {
}
}
这是FastAPI服务器代码:
from fastapi import FastAPI, File, UploadFile
from typing import List
import os
app = FastAPI()
@app.get("/")
def read_root():
return { "Hello": "World" }
@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] = File(...)):
print('here')
UPLOAD_DIRECTORY = "./"
for file in files:
contents = await file.read()
with open(os.path.join(UPLOAD_DIRECTORY, file.filename), "wb") as fp:
fp.write(contents)
print(file.filename)
return {"filenames": [file.filename for file in files]}
这是错误:
INFO: 127.0.0.1:65191 - "POST /uploadfiles HTTP/1.1" 422 Unprocessable Entity
您正在尝试发送
multipart/form-data
(请参阅FastAPI 文档上传文件),但您已将 Content-Type
标头设置为 application/json
。因此,您应该删除/更改它。
此外,在客户端,您应该使用服务器端为上传文件提供的相同
form
键,即 files
(因为您将其定义为 files: List[bytes] = File(...)
),而不是 video
。 这个答案演示了如何将单个或多个文件上传到 FastAPI 服务器。请看一下。