1

srt_downloader.py

@@ -7,6 +7,7 @@ import time
 from dataclasses import dataclass
 from pathlib import Path
 from typing import Dict, Iterable, List, Optional
+from urllib.parse import parse_qs, urlparse
 
 import requests
 from bs4 import BeautifulSoup
@@ -177,6 +178,17 @@ def main() -> None:
     load_dotenv()
     html_path = Path("学生学习页面.html")
     course_url = os.getenv("COURSE_URL", "").strip()
+
+    # Parse URL parameters from .env
+    clazzid, courseid, cpi = "", "", ""
+    if course_url:
+        parsed = urlparse(course_url)
+        qs = parse_qs(parsed.query)
+        clazzid = qs.get("clazzid", [""])[0]
+        courseid = qs.get("courseId", [""])[0] or qs.get("courseid", [""])[0]
+        cpi = qs.get("cpi", [""])[0]
+        print(f"[INFO] Extracted params: courseid={courseid}, clazzid={clazzid}, cpi={cpi}")
+
     if not html_path.exists():
         if course_url:
             print(f"[INFO] 本地HTML不存在，自动下载课程页面: {course_url}")
@@ -215,11 +227,11 @@ def main() -> None:
         print("[WARN] No cookies provided. Requests may fail if authentication is required.")
 
     base_params = {
-        "clazzid": "129437493",
-        "courseid": "256005147",
+        "clazzid": clazzid,
+        "courseid": courseid,
         "num": "0",
         "ut": "s",
-        "cpi": "441843723",
+        "cpi": cpi,
         "mooc2": "1",
         "isMicroCourse": "",
         "editorPreview": "",