feat: 支持7z资料包导入

apps/documents/services.py

@@ -1,6 +1,7 @@
 from pathlib import Path
 from io import BytesIO
 import re
+import tempfile
 import xml.etree.ElementTree as ET
 from zipfile import BadZipFile, ZipFile
 
@@ -220,6 +221,9 @@ def _expand_uploaded_files(uploaded_files: list) -> list[dict]:
         if extension == ".zip":
             expanded_files.extend(_extract_zip_entries(uploaded_file))
             continue
+        if extension == ".7z":
+            expanded_files.extend(_extract_7z_entries(uploaded_file))
+            continue
         expanded_files.append(
             {
                 "relative_path": uploaded_file.name,
@@ -255,6 +259,39 @@ def _extract_zip_entries(uploaded_file) -> list[dict]:
     return entries
 
 
+def _extract_7z_entries(uploaded_file) -> list[dict]:
+    try:
+        import py7zr
+    except ImportError as exc:
+        raise RuntimeError("处理 .7z 资料包需要安装 py7zr。") from exc
+
+    archive_bytes = uploaded_file.read()
+    uploaded_file.seek(0)
+    entries = []
+    with tempfile.TemporaryDirectory() as temp_dir:
+        with py7zr.SevenZipFile(BytesIO(archive_bytes), mode="r") as archive:
+            archive.extractall(path=temp_dir)
+        base_path = Path(temp_dir)
+        for file_path in sorted(base_path.rglob("*")):
+            if not file_path.is_file():
+                continue
+            relative_path = file_path.relative_to(base_path).as_posix()
+            extension = Path(relative_path).suffix.lower()
+            if extension not in {".txt", ".md", ".pdf", ".docx"}:
+                continue
+            extracted_file = SimpleUploadedFile(
+                file_path.name,
+                file_path.read_bytes(),
+            )
+            entries.append(
+                {
+                    "relative_path": relative_path,
+                    "uploaded_file": extracted_file,
+                }
+            )
+    return entries
+
+
 def _detect_document_role(file_name: str) -> str:
     normalized = file_name.lower()
     if "申请表" in file_name: