PROJ_DATA连接问题

app/services/qgis/qgis_runner.py

@@ -44,11 +44,21 @@ def _setup_python_path():
 
 def _setup_environment():
     """设置 QGIS 运行所需的环境变量"""
-    # 自动检测 QGIS 应用目录
+    # 自动检测 QGIS 应用目录（与 run_qgis.bat 保持一致）
     qgis_app_dir = os.path.join(QGIS_ROOT, "apps", "qgis-ltr")
     if not os.path.isdir(qgis_app_dir):
         qgis_app_dir = os.path.join(QGIS_ROOT, "apps", "qgis")
 
+    # ★ 必须在任何 DLL 加载前设置 PROJ_DATA，防止 PostgreSQL 的旧 proj.db 干扰
+    for proj_dir in [
+        os.path.join(qgis_app_dir, "share", "proj"),
+        os.path.join(QGIS_ROOT, "share", "proj"),
+        os.path.join(QGIS_ROOT, "apps", "gdal", "share", "proj"),
+    ]:
+        if os.path.isdir(proj_dir):
+            os.environ["PROJ_DATA"] = proj_dir
+            break
+
     os.environ["QGIS_PREFIX_PATH"] = qgis_app_dir
     os.environ["PYTHONUTF8"] = "1"
     os.environ["GDAL_FILENAME_IS_UTF8"] = "YES"
@@ -64,15 +74,6 @@ def _setup_environment():
         if os.path.isdir(gdal_data):
             os.environ["GDAL_DATA"] = gdal_data
 
-        # 强制使用 QGIS 自带的 PROJ，避免 PostgreSQL/PostGIS 的旧 proj.db 干扰
-        for proj_dir in [
-            os.path.join(qgis_app_dir, "share", "proj"),
-            os.path.join(QGIS_ROOT, "share", "proj"),
-        ]:
-            if os.path.isdir(proj_dir):
-                os.environ["PROJ_DATA"] = proj_dir
-                break
-
         import ctypes
         _dll_dirs = [
             os.path.join(qgis_app_dir, "bin"),