feat: save_pdf_from_oa_url 允许202

apps/resm/tasks.py

@@ -349,7 +349,7 @@ def download_pdf(paper_id):
         if paper.fetch_status == "downloading":
             return
         paper.fetch("downloading")
-        msg = "没有下载渠道"
+        msg = "no_method_to_get_pdf"
         current_from = ""
         if paper.oa_url:
             if "https://doi.org/10.1016" in paper.oa_url:
@@ -365,6 +365,8 @@ def download_pdf(paper_id):
             current_from = "scihub"
             msg = save_pdf_from_scihub(paper)
         return msg, current_from
+        if paper.fail_reason is None and paper.has_fulltext_pdf is False:
+            paper.save_fail_reason(msg)
     finally:
         paper.fetch_end()
 
@@ -377,7 +379,7 @@ def save_pdf_from_oa_url(paper:Paper):
         paper.save_fail_reason("oa_url_request_error")
         return f"oa_url_request_error: {str(e)}"
     
-    if res.status_code == 200:
+    if res.status_code in [200, 201, 202]:
         # 检查是否是PDF文件：检查魔数 %PDF 或 content-type
         is_pdf = (
             res.content.startswith(b'%PDF') or