后端开发完成

backend/app/common/utils.py

@@ -0,0 +1,32 @@
+from datetime import datetime, timedelta
+from typing import Optional
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+from app.config import settings
+
+# 密码加密上下文
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    """验证密码"""
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password: str) -> str:
+    """获取密码哈希值"""
+    # bcrypt限制密码长度不能超过72字节
+    password = password[:72]
+    return pwd_context.hash(password)
+
+
+def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
+    """创建访问令牌"""
+    to_encode = data.copy()
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=settings.access_token_expire_minutes)
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, settings.secret_key, algorithm=settings.algorithm)
+    return encoded_jwt