React Native 和 FastAPI 問題

Question

我在創建 React Native 應用程序時遇到了一個問題。 我在后端使用 FastAPI。 在向我的后端發出此調用時，沒有任何反應。

  function sendAkt() {
    fetch("https://192.168.1.5:8000/newActivity", {
      method: "POST",
      headers: {
        'Accept': "application/json",
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        name: ime,
        desc: opis,
        place: mjesto,
        team: tim,
        typeOf: pickerSel,
        id: users.id,
      }),
    })
    .then(_=> console.log('rea for the minute'))
    .catch(e => console.log(e))
  }

沒有錯誤，后端的控制台從來沒有報告過對后端路由的調用。 似乎獲取只是掛起。 因為大約 3 分鍾后，這會在控制台中彈出

Network request failed
- node_modules\whatwg-fetch\dist\fetch.umd.js:505:17 in setTimeout$argument_0
- node_modules\react-native\Libraries\Core\Timers\JSTimers.js:135:14 in _callTimer
- node_modules\react-native\Libraries\Core\Timers\JSTimers.js:387:16 in callTimers
- node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:425:19 in __callFunction
- node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:112:6 in __guard$argument_0
- node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:373:10 in __guard
- node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:111:4 in callFunctionReturnFlushedQueue
* [native code]:null in callFunctionReturnFlushedQueue

這是我正在調用的后端路由

@app.post('/newActivity')
async def unos(request: NewActivity):
    print('route Reaches')
    # name = request.name
    # desc = request.desc
    # place = request.place
    # team = request.team
    # typeOf = request.typeOf
    # id = request.id
    # year = 10

    # new_activity = Activities(activity_type_id=typeOf, academic_year_id=year,
    #                           description=desc,
    #                           user_id=id, team_id=team, title=name, location=place)

    # session.add(new_activity)
    # session.commit()

    return JSONResponse(content='Uspijeh')

這是我后端的 CORS 設置

app.add_middleware(
    CORSMiddleware,
    allow_origins=['http://localhost:19001'],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

我已經在這里待了幾個小時，我不知道它可能是什么導致了這個問題

Answer 1

真傻的問題。 我正在使用https而不是http. Changing to調用本地服務器http. Changing to http. Changing to http` 修復了它