OAuth2 规定在使用(我们打算用的)「password 流程」时,客户端/用户必须将 username 和 password 字段作为表单数据发送。我们看下在我们应该去如何实现呢。
我们写一个登录接口,默认返回token和token_type
from fastapi import FastAPI, Depends,status,HTTPException
from pydantic import BaseModel
from typing import Optional
from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
oauth2_scheme = OAuth2PasswordBearer(tokenUrl=\"token\")
fake_users = {
\"leizi\": {
\"username\": \"leizi\",
\"full_name\": \"leizishuoceshikaifa\",
\"email\": \"leizi@leizi.com\",
\"hashed_password\": \"leizi\",
\"disabled\": False
}
}
app = FastAPI()
def fake_hash_password(password: str):
return password
class User(BaseModel):
username: str
email: Optional[str] = None
full_name: Optional[str] = None
disabled: Optional[bool] = None
class UserInDB(User):
hashed_password: str
def get_user(db, username: str):
if username in db:
user_dict = db[username]
return UserInDB(**user_dict)
def fake_decode_token(token):
user = get_user(fake_users, token)
return user
def get_current_user(token: str = Depends(oauth2_scheme)):
user = fake_decode_token(token)
print(user)
if not user:
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail=\"Invalid authentication\",
headers={\"WWW-Authenticate\": \"Bearer\"},
)
return user
@app.post(\"/login\")
def login(form_data: OAuth2PasswordRequestForm = Depends()):
#校验密码¶
# 目前我们已经从数据库中获取了用户数据,但尚未校验密码。
# 让我们首先将这些数据放入 Pydantic UserInDB 模型中。
# 永远不要保存明文密码,因此,我们将使用(伪)哈希密码系统。
# 如果密码不匹配,我们将返回同一个错误。
user_dict = fake_users.get(form_data.username)
print(user_dict)
if not user_dict:
raise HTTPException(status_code=400, detail=\"用户名错误\")
user = UserInDB(**user_dict)
hashed_password = fake_hash_password(form_data.password)
if not hashed_password == user.hashed_password:
raise HTTPException(status_code=400, detail=\"密码错误 \")
return {\"access_token\": user.username, \"token_type\": \"bearer\"}
@app.get(\"/users/me\")
async def read_users_me(current_user: User = Depends(get_current_user)):
print(current_user)
return current_user
来源:https://www.cnblogs.com/leiziv5/p/15416748.html
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