feat: 支持7z资料包导入

apps/documents/forms.py

@@ -5,7 +5,7 @@ from django import forms
 from apps.scenarios.services import ScenarioNotFound, get_scenario
 from apps.scenarios.services import list_scenarios
 
-SUPPORTED_EXTENSIONS = {".txt", ".md", ".pdf", ".docx", ".zip"}
+SUPPORTED_EXTENSIONS = {".txt", ".md", ".pdf", ".docx", ".zip", ".7z"}
 
 
 class MultipleFileInput(forms.ClearableFileInput):
@@ -52,7 +52,7 @@ class DocumentUploadForm(forms.Form):
             return uploaded_file
         extension = Path(uploaded_file.name).suffix.lower()
         if extension not in SUPPORTED_EXTENSIONS:
-            raise forms.ValidationError("仅支持 .txt、.md、.pdf、.docx 和 .zip 文件")
+            raise forms.ValidationError("仅支持 .txt、.md、.pdf、.docx、.zip 和 .7z 文件")
         return uploaded_file
 
     def clean_files(self):
@@ -60,7 +60,7 @@ class DocumentUploadForm(forms.Form):
         for uploaded_file in uploaded_files:
             extension = Path(uploaded_file.name).suffix.lower()
             if extension not in SUPPORTED_EXTENSIONS:
-                raise forms.ValidationError("仅支持 .txt、.md、.pdf、.docx 和 .zip 文件")
+                raise forms.ValidationError("仅支持 .txt、.md、.pdf、.docx、.zip 和 .7z 文件")
         return uploaded_files
 
     def clean(self):

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:

apps/documents/views.py

@@ -76,7 +76,7 @@ def upload(request):
             "form": form,
             "scenarios": list_scenarios(),
             "upload_checks": [
-                "文件格式支持 PDF、DOCX、MD、TXT 与 ZIP 资料包",
+                "文件格式支持 PDF、DOCX、MD、TXT、ZIP 与 7Z 资料包",
                 "业务资料与法规依据资料需分开归属",
                 "支持一次上传多份文件并归并到同一个资料包",
                 "目录类文件会优先参与完整性校验",