Gdal GeoDjango Windows

Question

我使用 Windows 10 (x64)，Python 3.6.4，Django 2.0.5。

我已经在我的机器上安装了 OSGEO4W64 (C:\OSGeo4W64)。

我设置了环境变量：

GDAL_LIBRARY_PATH = C:\OSGeo4W64\share\proj

GDAL_DATA = C:\OSGeo4W64\share\gdal

OSGEO4W_ROOT = C:\OSGeo4W64

PROJ_LIB = C:\OSGeo4W64\share\proj

此外，我的 djanjo 项目设置中添加了一个：

if os.name == 'nt':
    import platform
    OSGEO4W = r"C:\OSGeo4W"
    if '64' in platform.architecture()[0]:
        OSGEO4W += "64"
    assert os.path.isdir(OSGEO4W), "Directory does not exist: " + OSGEO4W
    os.environ['OSGEO4W_ROOT'] = OSGEO4W
    os.environ['GDAL_DATA'] = OSGEO4W + r"\share\gdal"
    os.environ['PROJ_LIB'] = OSGEO4W + r"\share\proj"
    os.environ['PATH'] = OSGEO4W + r"\bin;" + os.environ['PATH']
    GDAL_LIBRARY_PATH = r'C:\OSGeo4W64\bin\gdal202'

我知道它看起来很丑，但它帮助我避免了其他问题（例如，使用未识别的库）。现在我无法修复这个错误:

    Traceback (most recent call last):
  File "C:\oktmo_Django\oktmo_project/manage.py", line 13, in <module>
    execute_from_command_line(sys.argv)
  File "C:\oktmo_Django\oktmo_project\venv\lib\site-packages\django\core\management\__init__.py", line 371, in execute_from_command_line
    utility.execute()
  File "C:\oktmo_Django\oktmo_project\venv\lib\site-packages\django\core\management\__init__.py", line 347, in execute
    django.setup()
  File "C:\oktmo_Django\oktmo_project\venv\lib\site-packages\django\__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:\oktmo_Django\oktmo_project\venv\lib\site-packages\django\apps\registry.py", line 89, in populate
    app_config = AppConfig.create(entry)
  File "C:\oktmo_Django\oktmo_project\venv\lib\site-packages\django\apps\config.py", line 90, in create
    module = import_module(entry)
  File "C:\Python\lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "C:\oktmo_Django\oktmo_project\venv\lib\site-packages\django\contrib\gis\gdal\__init__.py", line 28, in <module>
    from django.contrib.gis.gdal.datasource import DataSource
  File "C:\oktmo_Django\oktmo_project\venv\lib\site-packages\django\contrib\gis\gdal\datasource.py", line 39, in <module>
    from django.contrib.gis.gdal.driver import Driver
  File "C:\oktmo_Django\oktmo_project\venv\lib\site-packages\django\contrib\gis\gdal\driver.py", line 5, in <module>
    from django.contrib.gis.gdal.prototypes import ds as vcapi, raster as rcapi
  File "C:\oktmo_Django\oktmo_project\venv\lib\site-packages\django\contrib\gis\gdal\prototypes\ds.py", line 9, in <module>
    from django.contrib.gis.gdal.libgdal import GDAL_VERSION, lgdal
  File "C:\oktmo_Django\oktmo_project\venv\lib\site-packages\django\contrib\gis\gdal\libgdal.py", line 43, in <module>
    lgdal = CDLL(lib_path)
  File "C:\Python\lib\ctypes\__init__.py", line 416, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: [WinError 127] The specified procedure could not be found

Answer 1

我发现的最简单的方法是：

从 whl 安装 Gdal，例如：https://www.lfd.uci.edu/~gohlke/pythonlibs/，如果这个 link 不可用，您需要的 whl 并不难找到。

添加到 settings.py 此代码：

   OSGEO_VENV = Path(__file__).parents[1] / 'venv/Lib/site-packages/osgeo/'
   GEOS_LIBRARY_PATH = str(OSGEO_VENV / 'geos_c.dll')
   GDAL_LIBRARY_PATH = str(OSGEO_VENV / 'gdal204.dll')
   os.environ["PATH"] += os.pathsep + str(OSGEO_VENV)```

确保将 gdal204.dll 编辑为您的特定 gdal 版本！

Gdal GeoDjango Windows

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