fastapi_jwt/
├── main.py
├── database.py
├── models.py
├── schemas.py
├── auth.py
├── create_db.py
├── requirements.txt
└── test.db  # criado automaticamente

pip install -r requirements.txt

pip install fastapi uvicorn sqlalchemy pydantic[email] python-jose passlib[bcrypt] python-multipart

from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker, declarative_base

DATABASE_URL = "sqlite:///./test.db"
engine = create_engine(DATABASE_URL, connect_args={"check_same_thread": False})
SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False)
Base = declarative_base()

def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()

from sqlalchemy import Column, Integer, String
from database import Base

class User(Base):
    __tablename__ = "users"
    id = Column(Integer, primary_key=True, index=True)
    name = Column(String)
    email = Column(String, unique=True, index=True)
    password = Column(String)

from pydantic import BaseModel, EmailStr

class UserCreate(BaseModel):
    name: str
    email: EmailStr
    password: str

class UserResponse(BaseModel):
    id: int
    name: str
    email: EmailStr
    class Config:
        from_attributes = True

class Token(BaseModel):
    access_token: str
    token_type: str

from datetime import datetime, timedelta
from jose import JWTError, jwt
from passlib.context import CryptContext
from fastapi import Depends, HTTPException, status
from fastapi.security import OAuth2PasswordBearer
from sqlalchemy.orm import Session
from models import User
from database import get_db

SECRET_KEY = "sua_chave_secreta"
ALGORITHM = "HS256"
ACCESS_TOKEN_EXPIRE_MINUTES = 30

pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
oauth2_scheme = OAuth2PasswordBearer(tokenUrl="login")

def hash_password(password: str):
    return pwd_context.hash(password)

def verify_password(plain_password, hashed_password):
    return pwd_context.verify(plain_password, hashed_password)

def create_access_token(data: dict, expires_delta: timedelta = timedelta(minutes=30)):
    to_encode = data.copy()
    expire = datetime.utcnow() + expires_delta
    to_encode.update({"exp": expire})
    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
    return encoded_jwt

def get_current_user(token: str = Depends(oauth2_scheme), db: Session = Depends(get_db)):
    credentials_exception = HTTPException(
        status_code=status.HTTP_401_UNAUTHORIZED,
        detail="Credenciais inválidas",
        headers={"WWW-Authenticate": "Bearer"},
    )
    try:
        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
        username: str = payload.get("sub")
        if username is None:
            raise credentials_exception
    except JWTError:
        raise credentials_exception
    user = db.query(User).filter(User.name == username).first()
    if user is None:
        raise credentials_exception
    return user

from fastapi import FastAPI, Depends, HTTPException, status
from sqlalchemy.orm import Session
from fastapi.security import OAuth2PasswordRequestForm

from database import get_db
from models import User
from schemas import UserCreate, UserResponse, Token
from auth import hash_password, verify_password, create_access_token, get_current_user

app = FastAPI(title="API com JWT + SQLite", version="1.0.0")

@app.post("/register", response_model=Token)
def register(user: UserCreate, db: Session = Depends(get_db)):
    db_user = db.query(User).filter(User.name == user.name).first()
    if db_user:
        raise HTTPException(status_code=400, detail="Nome de usuário já existe")
    hashed = hash_password(user.password)
    new_user = User(name=user.name, email=user.email, password=hashed)
    db.add(new_user)
    db.commit()
    db.refresh(new_user)
    access_token = create_access_token(data={"sub": new_user.name})
    return {"access_token": access_token, "token_type": "bearer"}

@app.post("/login", response_model=Token)
def login(form_data: OAuth2PasswordRequestForm = Depends(), db: Session = Depends(get_db)):
    user = db.query(User).filter(User.name == form_data.username).first()
    if not user or not verify_password(form_data.password, user.password):
        raise HTTPException(status_code=401, detail="Credenciais inválidas")
    token = create_access_token(data={"sub": user.name})
    return {"access_token": token, "token_type": "bearer"}

@app.get("/me", response_model=UserResponse)
def read_current_user(current_user: User = Depends(get_current_user)):
    return current_user

from database import Base, engine
from models import User

Base.metadata.create_all(bind=engine)

fastapi
uvicorn
sqlalchemy
pydantic[email]
passlib[bcrypt]==1.7.4
bcrypt==3.2.0
python-jose
python-multipart

python create_db.py

uvicorn main:app --reload

@echo off
mkdir fastapi_jwt
cd fastapi_jwt

:: Criação dos arquivos principais
type nul > main.py
type nul > auth.py
type nul > database.py
type nul > models.py
type nul > schemas.py
type nul > create_db.py
type nul > requirements.txt

:: Dependências do projeto
echo fastapi>>requirements.txt
echo uvicorn>>requirements.txt
echo sqlalchemy>>requirements.txt
echo "pydantic[email]">>requirements.txt
echo passlib[bcrypt]==1.7.4>>requirements.txt
echo bcrypt==3.2.0>>requirements.txt
echo python-jose>>requirements.txt
echo python-multipart>>requirements.txt