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NeteaseUrl/web/errors.py
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snowy-yang 6288a98ecc refactor: 拆分 4 个巨石模块为包,清理过时注释并删除作废文档
为什么:单文件 1100~1900 行的巨石模块让「改一处要通读全文」;同时注释里残留
大量已删台账的编号,以及「Flask/FastAPI 双栈迁移期」这类已失实的架构描述,
会误导后来者按不复存在的架构去改代码。

拆分(对外导入路径不变,行为零变更):
- music_downloader.py  -> music_downloader/(models/downloader/cover/_http/_log/_concurrency)
- auth_system.py       -> auth_system/(db/security/users/credits/ledger/mail/cards/backup...)
- music_api.py         -> music_api/(api/client/crypto/qr/cookies/compat/constants/errors)
- services/runtime.py  -> services/(api_service/_shared/_taskcore/downloads/batch/podcast/
  streaming/tasks);services/runtime.py 保留为兼容门面

兼容性做法:各包用 __init__.py 以 __all__ 原样再导出全部符号,既有调用点
(auth_system.xxx / services.xxx / from music_api import Y)零改动;路径常量改为经包属性
动态读取(auth_system.DB_PATH),否则测试的 monkeypatch 会静默失效并写到生产库。

修复 9 处代码损伤(上一轮注释清理把 `()` 当「空括号残留」删掉所致;用「与拆分前逐字
等价」校验逐一定位,静态检查只会报出其中 4 处):
- core/config.py  ).strip() or '*'
- core/state.py   threading.Lock() x2
- qr_login.py     datetime.now() / .strip()
- music_downloader/downloader.py  .lower()
- services/podcast.py  set() / time.time() x2

清理与删除:
- 删除 部署文档.md / 功能介绍.md / README_私有包警告.txt
- 清理指向已删台账与文档的过时编号注释;把「迁移期 / 两栈 / 双框架 / 已迁移」等
  失实描述改写为现状描述(保留 `<-> Flask /path` 映射表等仍有价值的契约来源说明)
- _mkpkg.py:公开包剔除清单去掉已不存在的文档名;私有包警告改为自包含
- pyproject.toml:补 pythonpath = ["."],使裸跑 pytest 不再 import core 失败

验证:ruff 全通过;pyright 0 errors / 0 warnings(102 文件);pytest 144 passed;
真实 uvicorn 冒烟 6 条路由符合预期且生产 data/ 指纹未变;忽略注释的逐字等价性校验通过。
2026-09-26 12:37:48 +08:00

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# -*- coding: utf-8 -*-
"""统一应用异常与错误响应。
FastAPI 依赖里无法直接「返回响应短路」,因此用抛出 AppError + 全局异常处理器
的方式,产出统一的 JSON 包体({status, success, message, error_code})。
"""
from typing import Any
from fastapi import Request
from fastapi.exceptions import RequestValidationError
from starlette.exceptions import HTTPException as StarletteHTTPException
from web.response import error
class AppError(Exception):
"""业务异常:携带 HTTP 状态码与可选 error_code。"""
def __init__(self, message: str, status_code: int = 400, error_code: str | None = None):
super().__init__(message)
self.message = message
self.status_code = status_code
self.error_code = error_code
def install_error_handlers(app) -> None:
@app.exception_handler(AppError)
async def _app_error(_request: Request, exc: AppError):
return error(exc.message, exc.status_code, exc.error_code)
@app.exception_handler(StarletteHTTPException)
async def _http_error(_request: Request, exc: StarletteHTTPException) -> Any:
# 404/405 等也统一为本站包体(404 也返回 {'success': False, ...})
msg = {404: '请求的资源不存在', 405: '请求方法不允许'}.get(exc.status_code,
str(exc.detail or '请求错误'))
return error(msg, exc.status_code)
@app.exception_handler(RequestValidationError)
async def _validation_error(_request: Request, exc: RequestValidationError):
return error('请求参数错误', 400)