jython 上的数据库 Django

Question

请帮助我在 django 上将数据库与 jython 连接起来，并在我将 jython manage.py runserver 服务器不运行时帮助我使用服务器

DATABASES = {
    'default': {
        #'ENGINE': 'doj.backends.zxjdbc.sqlite3',
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'tanagraweb',
        'USER': 'root',
        'PASSWORD': 'root',
        'HOST': '127.0.0.1',
        'PORT': '3306',
    }
}

然后 django 抛出这个：

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "C:\jython2.7b3\Lib\site-packages\django\core\management\__init__.py", line 399, in execute_from_command_line
    utility.execute()
  File "C:\jython2.7b3\Lib\site-packages\django\core\management\__init__.py", line 392, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\jython2.7b3\Lib\site-packages\django\core\management\base.py", line 242, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "C:\jython2.7b3\Lib\site-packages\django\core\management\base.py", line 280, in execute
    translation.activate('en-us')
  File "C:\jython2.7b3\Lib\site-packages\django\utils\translation\__init__.py", line 130, in activate
    return _trans.activate(language)
  File "C:\jython2.7b3\Lib\site-packages\django\utils\translation\trans_real.py", line 188, in activate
    _active.value = translation(language)
  File "C:\jython2.7b3\Lib\site-packages\django\utils\translation\trans_real.py", line 177, in translation
    default_translation = _fetch(settings.LANGUAGE_CODE)
  File "C:\jython2.7b3\Lib\site-packages\django\utils\translation\trans_real.py", line 159, in _fetch
    app = import_module(appname)
  File "C:\jython2.7b3\Lib\site-packages\django\utils\importlib.py", line 40, in import_module
    __import__(name)
  File "C:\jython2.7b3\Lib\site-packages\django\contrib\admin\__init__.py", line 6, in <module>
    from django.contrib.admin.sites import AdminSite, site
  File "C:\jython2.7b3\Lib\site-packages\django\contrib\admin\sites.py", line 4, in <module>
    from django.contrib.admin.forms import AdminAuthenticationForm
  File "C:\jython2.7b3\Lib\site-packages\django\contrib\admin\forms.py", line 6, in <module>
    from django.contrib.auth.forms import AuthenticationForm
  File "C:\jython2.7b3\Lib\site-packages\django\contrib\auth\forms.py", line 17, in <module>
    from django.contrib.auth.models import User
  File "C:\jython2.7b3\Lib\site-packages\django\contrib\auth\models.py", line 47, in <module>
    @python_2_unicode_compatible
  File "C:\jython2.7b3\Lib\site-packages\django\db\models\base.py", line 96, in __new__
    new_class.add_to_class('_meta', Options(meta, **kwargs))
  File "C:\jython2.7b3\Lib\site-packages\django\db\models\base.py", line 264, in add_to_class
    value.contribute_to_class(cls, name)
  File "C:\jython2.7b3\Lib\site-packages\django\db\models\options.py", line 124, in contribute_to_class
    self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
  File "C:\jython2.7b3\Lib\site-packages\django\db\__init__.py", line 34, in __getattr__
    return getattr(connections[DEFAULT_DB_ALIAS], item)
  File "C:\jython2.7b3\Lib\site-packages\django\db\utils.py", line 198, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "C:\jython2.7b3\Lib\site-packages\django\db\utils.py", line 113, in load_backend
    return import_module('%s.base' % backend_name)
  File "C:\jython2.7b3\Lib\site-packages\django\db\utils.py", line 113, in load_backend
    return import_module('%s.base' % backend_name)
  File "C:\jython2.7b3\Lib\site-packages\django\utils\importlib.py", line 40, in import_module
    __import__(name)
  File "C:\jython2.7b3\Lib\site-packages\django\db\backends\mysql\base.py", line 17, in <module>
    raise ImproperlyConfigured("Error loading MySQLdb module: %s" % e)
django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: No module named MySQLdb

我研究并发现这是 mysql 的连接器，但我不知道为什么这不起作用 如果有人在 django 上的 jython 有一个项目，我将非常感激，这太难了

Answer 1

虽然MySQLdb 是 Python/Django 社区中使用最广泛的 MySql 库，但您不能使用它，因为 Jython 不支持 C 扩展。

要在 Django 中使用 Jython，您需要安装 django-jython 并将 db 后端设置为 'ENGINE': 'doj.db.backends.mysql'

这在官方文档Running Django on Jython中有记录

Answer 2

1. 使用“pip install pymysql”安装pymysql
2. 将以下内容添加到您的 manage.py 文件中：

import pymysql

pymysql.install_as_MySQLdb()

1. 在您的 DATABASES 设置中，使用：

ENGINE': 'django.db.backends.mysql',