Windows上的GeoDjango：尝试在设置中设置GDAL_LIBRARY_PATH [英] GeoDjango on Windows: Try setting GDAL_LIBRARY_PATH in your settings

问题描述

我已经做过十几次了，但是这次没有用。.

I've done this a dozen times before, but something isn't working this time..

关注文档：

https：//docs.djangoproject .com / en / 1.11 / ref / contrib / gis / install /＃windows

我正在尝试在Windows计算机上设置GeoDjango（一个是在paperspace.com上设置的虚拟Windows 10。我的PATH设置似乎有问题，但我不知道是什么问题。我已经运行了说明中突出显示的命令。我检查了我的PATH变量，一切似乎正常。我尝试将它们指向OSGeo4Win的32位和64位版本。无论如何，我每次都会得到以下输出：

I'm trying to set up GeoDjango on a Windows machine (this one is a virtual windows 10 set up on paperspace.com). There seems to be a problem with my PATH settings, but I can't figure out what it is. I've run the commands highlighted in the instructions. I've checked my PATH variables and everything seems ok. I've tried pointing them to both the 32-bit and 64-bit versions of OSGeo4Win. Regardless, I get the following output every time:

C:\Python\lib\site-packages\floppyforms\__init__.py:21: UserWarning: Unable to import floppyforms.gis, geometry widgets not available
  "Unable to import floppyforms.gis, geometry widgets not available")
Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "C:\Python\lib\site-packages\django\core\management\__init__.py", line 363, in execute_from_command_line
    utility.execute()
  File "C:\Python\lib\site-packages\django\core\management\__init__.py", line 337, in execute
    django.setup()
  File "C:\Python\lib\site-packages\django\__init__.py", line 27, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:\Python\lib\site-packages\django\apps\registry.py", line 108, in populate
    app_config.import_models()
  File "C:\Python\lib\site-packages\django\apps\config.py", line 202, in import_models
    self.models_module = import_module(models_module_name)
  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 978, in _gcd_import
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load
  File "<frozen importlib._bootstrap>", line 950, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 655, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed
  File "C:\Python\lib\site-packages\django\contrib\auth\models.py", line 4, in <module>
    from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
  File "C:\Python\lib\site-packages\django\contrib\auth\base_user.py", line 52, in <module>
    class AbstractBaseUser(models.Model):
  File "C:\Python\lib\site-packages\django\db\models\base.py", line 124, in __new__
    new_class.add_to_class('_meta', Options(meta, app_label))
  File "C:\Python\lib\site-packages\django\db\models\base.py", line 330, in add_to_class
    value.contribute_to_class(cls, name)
  File "C:\Python\lib\site-packages\django\db\models\options.py", line 214, in contribute_to_class
    self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
  File "C:\Python\lib\site-packages\django\db\__init__.py", line 33, in __getattr__
    return getattr(connections[DEFAULT_DB_ALIAS], item)
  File "C:\Python\lib\site-packages\django\db\utils.py", line 211, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "C:\Python\lib\site-packages\django\db\utils.py", line 115, in load_backend
    return import_module('%s.base' % backend_name)
  File "C:\Python\lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "C:\Python\lib\site-packages\django\contrib\gis\db\backends\postgis\base.py", line 5, in <module>
    from .features import DatabaseFeatures
  File "C:\Python\lib\site-packages\django\contrib\gis\db\backends\postgis\features.py", line 1, in <module>
    from django.contrib.gis.db.backends.base.features import BaseSpatialFeatures
  File "C:\Python\lib\site-packages\django\contrib\gis\db\backends\base\features.py", line 4, in <module>
    from django.contrib.gis.db.models import aggregates
  File "C:\Python\lib\site-packages\django\contrib\gis\db\models\__init__.py", line 3, in <module>
    from django.contrib.gis.db.models.aggregates import *  # NOQA
  File "C:\Python\lib\site-packages\django\contrib\gis\db\models\aggregates.py", line 1, in <module>
    from django.contrib.gis.db.models.fields import ExtentField
  File "C:\Python\lib\site-packages\django\contrib\gis\db\models\fields.py", line 3, in <module>
    from django.contrib.gis import forms, gdal
  File "C:\Python\lib\site-packages\django\contrib\gis\forms\__init__.py", line 3, in <module>
    from .fields import (  # NOQA
  File "C:\Python\lib\site-packages\django\contrib\gis\forms\fields.py", line 4, in <module>
    from django.contrib.gis.geos import GEOSException, GEOSGeometry
  File "C:\Python\lib\site-packages\django\contrib\gis\geos\__init__.py", line 5, in <module>
    from .collections import (  # NOQA
  File "C:\Python\lib\site-packages\django\contrib\gis\geos\collections.py", line 11, in <module>
    from django.contrib.gis.geos.geometry import GEOSGeometry, LinearGeometryMixin
  File "C:\Python\lib\site-packages\django\contrib\gis\geos\geometry.py", line 11, in <module>
    from django.contrib.gis import gdal
  File "C:\Python\lib\site-packages\django\contrib\gis\gdal\__init__.py", line 28, in <module>
    from django.contrib.gis.gdal.datasource import DataSource
  File "C:\Python\lib\site-packages\django\contrib\gis\gdal\datasource.py", line 39, in <module>
    from django.contrib.gis.gdal.driver import Driver
  File "C:\Python\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:\Python\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:\Python\lib\site-packages\django\contrib\gis\gdal\libgdal.py", line 44, in <module>
    'GDAL_LIBRARY_PATH in your settings.' % '", "'.join(lib_names)
django.contrib.gis.gdal.error.GDALException: Could not find the GDAL library (tried "gdal111", "gdal110", "gdal19", "gdal18", "gdal17"). Try setting GDAL_LIBRARY_PATH in your settings.

有人有什么想法吗？

更新：
我去商店买了一台新笔记本电脑，但仍然遇到同样的问题。某些GeoDjango依赖项可能是版本问题吗？我对于该怎么办不知所措，但这对我来说是一种紧急情况。

UPDATE: I went to the store and bought a new laptop and I am still running into the same issue. Could it be an versioning issue with some of the GeoDjango dependencies? I'm at a loss for what to do, but it's kind of an emergency for me.

推荐答案

问题最终是Django和GDAL之间的版本不匹配。 Django没有搜索正确的文件名（本例中为 gdal202.dll ）。

The issue ended up being a version mismatch between Django and GDAL. Django was not searching for the correct file name (gdal202.dll in my case).

修复后，我需要在第26行的以下文件中添加 str（'gdal202'）：

Fixing it required me to add str('gdal202') to the following file on line 26:

（Python根目录）\Lib\site-packages\django\contrib\gis\gdal\libgdal.py

请注意，如果您在虚拟环境中工作，则 Python Root 实际上是无论是哪里，即： Users\YourName\Envs\project

Note that if you are working in a Virtual Environment, then Python Root will actually be wherever that is ie: Users\YourName\Envs\project

如果再次出现此问题，则可以查看您的 C：\OSGeo4W\bin 目录以找出Django需要哪个 gdalxxx.dll 进行搜索。

If this issue reoccurs, you can look through your C:\OSGeo4W\bin directory to figure out which gdalxxx.dll it is that Django needs to search for.

此外，请确保您使用的是 32位版本的Python和OSGeo4Win。否则，您可能会遇到相同的失败。

In addition, make sure that you are using the 32-bit versions of Python and OSGeo4Win. Otherwise, you may see the same failure.

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