python-fastapi-mm-zhcs-yj-api/routers/api/qrcode/__init__.py

from fastapi import APIRouter, Request, Depends, HTTPException, Query, Header
from sqlalchemy.exc import IntegrityError
from fastapi.responses import HTMLResponse, FileResponse, StreamingResponse, RedirectResponse
from fastapi.responses import JSONResponse
from starlette.requests import HTTPConnection
from database import get_db
from sqlalchemy import text, exists, and_, or_, not_
from sqlalchemy.orm import Session
from sqlalchemy.sql import func
from models import *
import json
import random
from sqlalchemy import create_engine, select
from typing import Optional
from utils.StripTagsHTMLParser import *
from common.db import db_event_management, db_user, db_area, db_emergency_plan
from common.security import valid_access_token
import traceback
from utils import *
from datetime import datetime, timedelta
import qrcode
from PIL import Image
from io import BytesIO
from config import settings
from common import YzyApi
from extensions import logger

router = APIRouter()


@router.get('/event/checkin', response_class=StreamingResponse)
async def get_qrcode(
    request: Request,
    event_id: str,
    db: Session = Depends(get_db)
):
    url = str(request.url)
    print('url:', url)
    url = settings.YZY_WEB_ROOT + f"/api/event_management/checkin/qrcode2?event_id={event_id}&r="+rnd()
    # url = url.replace("http://" + request.url.hostname, settings.YZY_WEB_ROOT)
    logger.info('替换到互联网ip: {}', url)   

    qr = qrcode.QRCode(
        version=1,
        error_correction=qrcode.constants.ERROR_CORRECT_M,
        box_size=10,
        border=0,
    )
    qr.add_data(url)
    qr.make(fit=True)
    image = qr.make_image()

    buf = BytesIO()
    image.save(buf, 'png')
    img_data = buf.getvalue()
    return StreamingResponse(BytesIO(img_data), media_type="image/png")