问题
I am trying this from hours now and I couldn't get get it solved. I am using this link to setup GeoDjango on Windows. I am getting following error message and I have no clue what to do. All the environment variables are set in Windows and I am able to import with
from osgeo import gdal
successfully in python terminal as
import gdal
is deprecated. In Postgresql database I have all extensions available as required like address_standardizer, fuzzystrmatch, ogr_fdw, pgrouting, plpgsql, pointcloud, pointcloud_postgis, postgis, postgis_sfcgal, postgis_tiger_geocoder and postgis_topology.
Django Project Settings:
DATABASES = {
'default': {
'ENGINE': 'django.contrib.gis.db.backends.postgis',
'NAME': 'postgis_24_sample',
'USER': 'postgres',
'PASSWORD': 'Hello123',
'HOST': 'localhost',
'PORT': '',
}
}
GDAL_LIBRARY_PATH = os.getenv('GDAL_LIBRARY_PATH')
GEOS_LIBRARY_PATH = os.getenv('GEOS_LIBRARY_PATH')
INSTALLED_APPS = [
...
'django.contrib.postgis',
...
]
ERROR:
(easy_geodj) C:\Users\dell\Desktop\easy_geodj\easy_geodj\djlocate>python manage.py runserver
Unhandled exception in thread started by <function wrapper at 0x066D6330>
Traceback (most recent call last):
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\utils\autoreload.py", line 227, in wrapper
fn(*args, **kwargs)
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\core\management\commands\runserver.py", line 117, in inner_run
autoreload.raise_last_exception()
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\utils\autoreload.py", line 250, in raise_last_exception
six.reraise(*_exception)
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\utils\autoreload.py", line 227, in wrapper
fn(*args, **kwargs)
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\__init__.py", line 27, in setup
apps.populate(settings.INSTALLED_APPS)
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\apps\registry.py", line 108, in populate
app_config.import_models()
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\apps\config.py", line 202, in import_models
self.models_module = import_module(models_module_name)
File "c:\python27\Lib\importlib\__init__.py", line 37, in import_module
__import__(name)
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\contrib\auth\models.py", line 4, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\contrib\auth\base_user.py", line 52, in <module>
class AbstractBaseUser(models.Model):
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\db\models\base.py", line 124, in __new__
new_class.add_to_class('_meta', Options(meta, app_label))
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\db\models\base.py", line 330, in add_to_class
value.contribute_to_class(cls, name)
File "C:\Users\dell\Desktop\easy_geodj\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:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\db\__init__.py", line 33, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\db\utils.py", line 211, in __getitem__
backend = load_backend(db['ENGINE'])
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\db\utils.py", line 115, in load_backend
return import_module('%s.base' % backend_name)
File "c:\python27\Lib\importlib\__init__.py", line 37, in import_module
__import__(name)
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\contrib\gis\db\backends\postgis\base.py", line 5, in <module>
from .features import DatabaseFeatures
File "C:\Users\dell\Desktop\easy_geodj\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:\Users\dell\Desktop\easy_geodj\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:\Users\dell\Desktop\easy_geodj\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:\Users\dell\Desktop\easy_geodj\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:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\contrib\gis\db\models\fields.py", line 3, in <module>
from django.contrib.gis import forms, gdal
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\contrib\gis\forms\__init__.py", line 3, in <module>
from .fields import ( # NOQA
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\contrib\gis\forms\fields.py", line 4, in <module>
from django.contrib.gis.geos import GEOSException, GEOSGeometry
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\contrib\gis\geos\__init__.py", line 5, in <module>
from .collections import ( # NOQA
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\contrib\gis\geos\collections.py", line 11, in <module>
from django.contrib.gis.geos.geometry import GEOSGeometry, LinearGeometryMixin
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\contrib\gis\geos\geometry.py", line 11, in <module>
from django.contrib.gis import gdal
File "C:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\contrib\gis\gdal\__init__.py", line 43, in <module>
from django.contrib.gis.gdal.driver import Driver # NOQA
File "C:\Users\dell\Desktop\easy_geodj\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:\Users\dell\Desktop\easy_geodj\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:\Users\dell\Desktop\easy_geodj\lib\site-packages\django\contrib\gis\gdal\libgdal.py", line 48, in <module>
lgdal = CDLL(lib_path)
File "c:\python27\Lib\ctypes\__init__.py", line 366, in __init__
self._handle = _dlopen(self._name, mode)
WindowsError: [Error 126] The specified module could not be found
回答1:
GIS dependencies are really hard to get right, especially on Windows. If you want to stick with this OS I'd recommend keep using OsGeo4W.
The steps that worked for me are the following:
Make sure to uninstall every distribution of those GIS packages you've installed and carefully follow the OSGeo4W installation instructions. Apache and MapServer are checked to be installed by default, you can uncheck them as they are not needed.
Than you can change your settings.py to look like this:
GEOS_LIBRARY_PATH = 'C:\\OSGeo4W64\\bin\\geos_c.dll'
GDAL_LIBRARY_PATH = 'C:\\OSGeo4W64\\bin\\gdal201.dll'
Note 1: the paths will depend on where you installed OSGeo4W but (as I remember) those are the defaults.
Note 2: if you download and install the 32-bit version your paths should look like this instead:
GEOS_LIBRARY_PATH = 'C:\\OSGeo4W\\bin\\geos_c.dll'
GDAL_LIBRARY_PATH = 'C:\\OSGeo4W\\bin\\gdal201.dll'
I've worked on a project using a similar stack and felt it was a lot easier to set things up on Linux (Ubuntu, particularly). If it's just a learning personal project or if it'll end up hosted on a Linux machine anyway, I'd suggest going for a Linux dev environment.
On Ubuntu, for example, you can just do:
$ sudo apt-get install binutils libproj-dev gdal-bin
Also the GeoDjango official docs have some good info to.
回答2:
I would ignore all attempts to manually handle the installation yourself, and use an anaconda environment. GIS dependencies are notoriously fickle to install, and anaconda has smoothed a large number of rough edges.
回答3:
First type python ins cmd and check which version is installed. it shows a result as
... [MSC v.1600 32 bit ..] ...
well you can find that python is compiled with MSC compiler 32bit version 1600
using this link download gdal based on compiler
http://www.gisinternals.com/release.php
for example you must download this version based on above python output
MSVC 2010 win32 release-1600-gdal-2-2-3-mapserver-7-0-7
download both GDAL-2.2.3.win32-py3.4.msi and gdal-202-1600-core.msi and install them.
Add these two variable into windows Environment
- `GDAL_DATA` = `C:\Program Files (x86)\GDAL\gdal-data`
- `path` = add this at the start `C:\Program Files (x86)\GDAL\`
and finally add these to setting.py
GEOS_LIBRARY_PATH = 'C:\\Program Files (x86)\\GDAL\\geos_c.dll'
GDAL_LIBRARY_PATH = 'C:\\Program Files (x86)\\GDAL\\gdal202.dll'
来源：https://stackoverflow.com/questions/48033648/gis-gdal-osgeos-import-error-in-django-on-windows