后端开发完成

backend/app/common/dependencies.py

@@ -0,0 +1,38 @@
+from typing import Optional
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from jose import JWTError, jwt
+from sqlalchemy.orm import Session
+from app.config import settings
+from app.database.database import get_db
+from app.models.user import User
+from app.schemas.auth import TokenData
+
+# OAuth2密码流
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/login")
+
+
+def get_current_user(token: str = Depends(oauth2_scheme), db: Session = Depends(get_db)):
+    """获取当前用户"""
+    credentials_exception = HTTPException(
+        status_code=status.HTTP_401_UNAUTHORIZED,
+        detail="Could not validate credentials",
+        headers={"WWW-Authenticate": "Bearer"},
+    )
+    try:
+        payload = jwt.decode(token, settings.secret_key, algorithms=[settings.algorithm])
+        username: str = payload.get("sub")
+        if username is None:
+            raise credentials_exception
+        token_data = TokenData(username=username)
+    except JWTError:
+        raise credentials_exception
+    user = db.query(User).filter(User.username == token_data.username).first()
+    if user is None:
+        raise credentials_exception
+    return user
+
+
+def get_current_active_user(current_user: User = Depends(get_current_user)):
+    """获取当前活跃用户"""
+    return current_user