PayrollManagementSystem/backend/app/api/deps.py
liuwenxin 273ebf4657 chore: 初始化项目结构与登录鉴权模块
后端 FastAPI 六层结构(api/services/repositories/models/schemas/core),
统一响应信封、全局异常、日志脱敏;6 张表经 Alembic 迁移建库,SQL 留存
db/migration;登录鉴权含图形验证码(Redis GETDEL 防重放)、JWT、登录限流、
登出黑名单(TTL=令牌剩余有效期)、登录日志。

前端 Vue3 + TS + Element Plus 骨架,含登录页、路由守卫、请求封装与 Vite 代理。

工程配置:uv 锁定 Python 3.12、ruff 检查与格式化、editorconfig、gitattributes。

测试 184 项(单元 155 / 集成 29)全绿,浏览器端到端 8 项通过。

Co-Authored-By: Claude Code <noreply@anthropic.com>
2026-10-09 18:46:36 +08:00

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"""FastAPI 公共依赖注入。"""
from typing import Annotated
from fastapi import Depends
from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
from sqlalchemy.orm import Session
from app.core.db import get_db
from app.core.exceptions import AuthError
from app.core.security import decode_token
from app.models import User
from app.repositories import user_repository
from app.services import token_blacklist
# auto_error=False:令牌缺失时由我们自己抛 AuthError,
# 才能返回统一响应信封,而不是 FastAPI 默认的 {"detail": "Not authenticated"}
_bearer_scheme = HTTPBearer(auto_error=False, description="Bearer 访问令牌")
BearerCredentials = Annotated[HTTPAuthorizationCredentials | None, Depends(_bearer_scheme)]
DbSession = Annotated[Session, Depends(get_db)]
def get_raw_token(credentials: BearerCredentials) -> str:
"""取原始令牌字符串。登出时需要它来解析 jti。"""
if credentials is None or not credentials.credentials:
raise AuthError()
return credentials.credentials
def get_current_user(credentials: BearerCredentials, session: DbSession) -> User:
"""从 Bearer 令牌解析当前登录用户。
**三重校验,缺一不可**:
1. 签名与有效期(`decode_token`)
2. 是否已被登出拉黑(Redis `ys:token:blacklist:{jti}`)
3. **令牌版本与库中是否一致** —— 禁用 / 改密 / 强制下线会把
`users.token_version` 加一,使此前签发的所有令牌立即失效。
这一步**不依赖 Redis**,因此 Redis 故障或数据被清空时,
离职员工依然无法继续访问
Redis 不可用时第 2 步会抛异常而非放行 —— **有意的 fail-closed**:
对能查看全员薪酬的系统,宁可拒绝请求也不能放行状态不明的令牌。
:raises AuthError: 任一项校验未通过(401)
"""
if credentials is None or not credentials.credentials:
raise AuthError()
payload = decode_token(credentials.credentials)
jti = payload.get("jti")
if jti and token_blacklist.is_revoked(jti):
raise AuthError("登录状态已失效,请重新登录")
subject = payload.get("sub")
user = user_repository.get_by_id(session, int(subject)) if _is_digits(subject) else None
if user is None or user.status != 1:
raise AuthError()
if payload.get("ver") != user.token_version:
raise AuthError("登录状态已失效,请重新登录")
return user
def _is_digits(value: object) -> bool:
"""判断令牌中的 sub 是否为合法的主键字符串。
令牌内容不可信,直接 int() 会因非法输入抛 ValueError 而不是 401。
"""
return isinstance(value, str) and value.isdigit()