FastAPI（六十六）实战开发《在线课程学习系统》接口开发--用户登陆接口开发

1.查询用户是否存在
2.校验密码是否正确
3.密码校验失败记录失败次数
4.失败次数大于10次，当天不能登陆
5.密码校验通过产生对应的token返回

class UserLogin(UserBase):
    password: str

config.py配置
redishost='127.0.0.1'
redisport='6379'
redisdb=0

from fastapi import FastAPI
from aioredis import create_redis_pool, Redis
from routers.user import usersRouter
from routers.websoocket import socketRouter
from routers.file import  fileRouter
from config import *
app = FastAPI()
async def get_redis_pool() -> Redis:
    redis = await create_redis_pool(f"redis://:@"+redishost+":"+redisport+"/"+redisdb+"?encoding=utf-8")
    return redis

@app.on_event("startup")
async def startup_event():
    app.state.redis = await get_redis_pool()


@app.on_event("shutdown")
async def shutdown_event():
    app.state.redis.close()
    await app.state.redis.wait_closed()

#config.py
SECRET_KEY = "09d25e094faa6ca2556c818166b7a9563b93f7099f6f0f4caa6cf63b88e8d3e7"
ALGORITHM = "HS256"
ACCESS_TOKEN_EXPIRE_MINUTES = 30

from jose import JWTError, jwt
#routers/user.py
def create_access_token(data: dict):
    to_encode = data.copy()
    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
    return encoded_jwt

@usersRouter.post("/login", response_model=UsersToken)
async def login(request: Request, user: UserCreate, db: Session = Depends(get_db)):
    db_crest = get_user_username(db, user.username)
    if not db_crest:
        logger.info("login："+user.username+"不存在")
        return  reponse(code=100205,message='用户不存在',data="")
    verifypassowrd = verify_password(user.password, db_crest.password)
    if verifypassowrd:
        useris = await request.app.state.redis.get(user.username)
        if not useris:
            try:
                token = create_access_token(data={"sub": user.username})
            except Exception as e:
                logger.exception(e)
                return reponse(code=100203,message='产生token失败',data='')
            request.app.state.redis.set(user.username, token, expire=ACCESS_TOKEN_EXPIRE_MINUTES * 60)
            return reponse(code=200,message='成功',data={"token":token})
        return reponse(code=100202,message='重复登陆',data='')
    else:
        result=await  request.app.state.redis.hgetall(user.username+"_password", encoding='utf8')
        if not result:
            times = datetime.strftime(datetime.now(), "%Y-%m-%d %H:%M:%S")
            request.app.state.redis.hmset_dict(user.username+"_password",num=0,time=times)
        else:
            errornum=int(result['num'])
            numtime=(datetime.now() - datetime.strptime(result['time'],'%Y-%m-%d %H:%M:%S')).seconds / 60
            if errornum<10 and numtime<30:
                #更新错误次数
                errornum += 1
                request.app.state.redis.hmset_dict(user.username + "_password", num=errornum)
                return  reponse(code=100206,data='',message='密码错误')
            elif errornum<10 and numtime>30:
                #次数置于1，时间设置现在时间
                errornum=1
                times = datetime.strftime(datetime.now(), "%Y-%m-%d %H:%M:%S")
                request.app.state.redis.hmset_dict(user.username + "_password", num=errornum,time=times)
                return  reponse(code=100206,data='',message='密码错误')
            elif errornum>10 and numtime<30:
                #次数设置成最大，返回
                errornum+=1
                request.app.state.redis.hmset_dict(user.username + "_password", num=errornum)
                return reponse(code=100204,message='输入密码错误次数过多，账号暂时锁定，请30min再来登录',data='')
            else:
                errornum = 1
                times = datetime.strftime(datetime.now(), "%Y-%m-%d %H:%M:%S")
                request.app.state.redis.hmset_dict(user.username + "_password", num=errornum, time=times)
                return reponse(code=100206, data='', message='密码错误')