fix: avoid blocking browser init

api_browser.py

@@ -7,6 +7,7 @@ API 浏览器 - 用纯 HTTP 请求实现浏览功能
 
 import requests
 from bs4 import BeautifulSoup
+import os
 import re
 import time
 import atexit
@@ -24,6 +25,12 @@ LOGIN_URL = getattr(config, "ZSGL_LOGIN_URL", f"{BASE_URL}/admin/login.aspx")
 INDEX_URL_PATTERN = getattr(config, "ZSGL_INDEX_URL_PATTERN", "index.aspx")
 COOKIES_DIR = getattr(config, "COOKIES_DIR", "data/cookies")
 
+try:
+    _API_REQUEST_TIMEOUT_SECONDS = float(os.environ.get("API_REQUEST_TIMEOUT_SECONDS") or os.environ.get("API_REQUEST_TIMEOUT") or "15")
+except Exception:
+    _API_REQUEST_TIMEOUT_SECONDS = 15.0
+_API_REQUEST_TIMEOUT_SECONDS = max(3.0, _API_REQUEST_TIMEOUT_SECONDS)
+
 _cookie_domain_fallback = urlsplit(BASE_URL).hostname or "postoa.aidunsoft.com"
 
 _api_browser_instances: "weakref.WeakSet[APIBrowser]" = weakref.WeakSet()
@@ -125,7 +132,7 @@ class APIBrowser:
 
     def _request_with_retry(self, method, url, max_retries=3, retry_delay=1, **kwargs):
         """带重试机制的请求方法"""
-        kwargs.setdefault('timeout', 5)
+        kwargs.setdefault('timeout', _API_REQUEST_TIMEOUT_SECONDS)
         last_error = None
         
         for attempt in range(1, max_retries + 1):

app.py

@@ -226,7 +226,13 @@ if __name__ == "__main__":
         logger.warning(f"警告: 加载并发配置失败,使用默认值: {e}")
 
     logger.info("正在初始化浏览器管理器...")
-    init_browser_manager()
+    try:
+        from services.browser_manager import init_browser_manager_async
+
+        logger.info("启动浏览器环境初始化（后台进行，不阻塞服务启动）...")
+        init_browser_manager_async()
+    except Exception as e:
+        logger.warning(f"警告: 启动浏览器初始化失败: {e}")
 
     logger.info("启动定时任务调度器...")
     threading.Thread(target=scheduled_task_worker, daemon=True, name="scheduled-task-worker").start()

routes/api_accounts.py

@@ -11,7 +11,7 @@ from crypto_utils import encrypt_password as encrypt_account_password
 from flask import Blueprint, jsonify, request
 from flask_login import current_user, login_required
 from services.accounts_service import load_user_accounts
-from services.browser_manager import init_browser_manager
+from services.browser_manager import init_browser_manager_async
 from services.browse_types import BROWSE_TYPE_SHOULD_READ, normalize_browse_type, validate_browse_type
 from services.client_log import log_to_client
 from services.models import Account
@@ -230,9 +230,9 @@ def start_account(account_id):
     if not browse_type:
         return jsonify({"error": "浏览类型无效"}), 400
     enable_screenshot = data.get("enable_screenshot", True)
-
-    if not init_browser_manager():
-        return jsonify({"error": "浏览器初始化失败"}), 500
+    if enable_screenshot:
+        # 异步初始化浏览器环境，避免首次下载/安装 Chromium 阻塞请求导致“网页无响应”
+        init_browser_manager_async()
 
     ok, message = submit_account_task(
         user_id=user_id,
@@ -308,6 +308,9 @@ def manual_screenshot(account_id):
 
     account.last_browse_type = browse_type
 
+    # 异步初始化浏览器环境，避免首次下载/安装 Chromium 阻塞请求
+    init_browser_manager_async()
+
     threading.Thread(
         target=take_screenshot_for_account,
         args=(user_id, account_id, browse_type, "manual_screenshot"),
@@ -333,6 +336,10 @@ def batch_start_accounts():
     if not account_ids:
         return jsonify({"error": "请选择要启动的账号"}), 400
 
+    if enable_screenshot:
+        # 异步初始化浏览器环境，避免首次下载/安装 Chromium 阻塞请求
+        init_browser_manager_async()
+
     started = []
     failed = []
 
@@ -407,4 +414,3 @@ def batch_stop_accounts():
         _emit("account_update", account.to_dict(), room=f"user_{user_id}")
 
     return jsonify({"success": True, "stopped_count": len(stopped), "stopped": stopped})
-

services/browser_manager.py

@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import threading
+import time
 from typing import Optional
 
 from app_logger import get_logger
@@ -13,28 +14,99 @@ logger = get_logger("browser_manager")
 
 _browser_manager: Optional[PlaywrightBrowserManager] = None
 _lock = threading.Lock()
+_cond = threading.Condition(_lock)
+_init_in_progress = False
+_init_error: Optional[str] = None
+_init_thread: Optional[threading.Thread] = None
 
 
 def get_browser_manager() -> Optional[PlaywrightBrowserManager]:
     return _browser_manager
 
 
-def init_browser_manager() -> bool:
-    global _browser_manager
+def is_browser_manager_ready() -> bool:
+    return _browser_manager is not None
 
-    with _lock:
+
+def get_browser_manager_init_error() -> Optional[str]:
+    return _init_error
+
+
+def init_browser_manager(*, block: bool = True, timeout: Optional[float] = None) -> bool:
+    global _browser_manager
+    global _init_in_progress, _init_error
+
+    deadline = time.monotonic() + float(timeout) if timeout is not None else None
+
+    with _cond:
         if _browser_manager is not None:
             return True
 
+        if _init_in_progress:
+            if not block:
+                return False
+            while _init_in_progress:
+                if deadline is None:
+                    _cond.wait(timeout=0.5)
+                    continue
+                remaining = deadline - time.monotonic()
+                if remaining <= 0:
+                    break
+                _cond.wait(timeout=min(0.5, remaining))
+            return _browser_manager is not None
+
+        _init_in_progress = True
+        _init_error = None
+
+    ok = False
+    error: Optional[str] = None
+    manager: Optional[PlaywrightBrowserManager] = None
+
+    try:
         logger.info("正在初始化Playwright浏览器管理器...")
         if not check_and_install_browser(log_callback=lambda msg, account_id=None: logger.info(str(msg))):
+            error = "浏览器环境检查失败"
             logger.error("浏览器环境检查失败！")
-            return False
+            ok = False
+        else:
+            manager = PlaywrightBrowserManager(
+                headless=True,
+                log_callback=lambda msg, account_id=None: logger.info(str(msg)),
+            )
+            ok = True
+            logger.info("Playwright浏览器管理器创建成功！")
+    except Exception as exc:
+        error = f"{type(exc).__name__}: {exc}"
+        logger.exception("初始化Playwright浏览器管理器时发生异常")
+        ok = False
 
-        _browser_manager = PlaywrightBrowserManager(
-            headless=True,
-            log_callback=lambda msg, account_id=None: logger.info(str(msg)),
-        )
-        logger.info("Playwright浏览器管理器创建成功！")
-        return True
+    with _cond:
+        if ok and manager is not None:
+            _browser_manager = manager
+        else:
+            _init_error = error or "初始化失败"
+        _init_in_progress = False
+        _cond.notify_all()
 
+    return ok
+
+
+def init_browser_manager_async() -> None:
+    """异步初始化浏览器环境，避免阻塞 Web 请求/服务启动。"""
+    global _init_thread
+
+    def _worker():
+        try:
+            init_browser_manager(block=True)
+        except Exception:
+            logger.exception("异步初始化浏览器管理器失败")
+
+    with _cond:
+        if _browser_manager is not None:
+            return
+        if _init_thread and _init_thread.is_alive():
+            return
+        if _init_in_progress:
+            return
+        _init_thread = threading.Thread(target=_worker, daemon=True, name="browser-manager-init")
+        _init_thread.start()