将 Django 连接到 PostgreSQL 数据库 (GeoDjango)

Question

我在使用 Django 网站连接到我的 Postgresql 数据库时遇到问题。我的数据库设置在 5434 端口，因为默认 5432 端口中已经存在一个数据库。

这是我遇到的错误

Traceback (most recent call last):
  File "c:\users\anouphong\appdata\local\programs\python\python38-32\lib\threading.py", line 932, in _bootstrap_inner
    self.run()
  File "c:\users\anouphong\appdata\local\programs\python\python38-32\lib\threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\utils\autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\core\management\commands\runserver.py", line 127, in inner_run
    self.check_migrations()
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\core\management\base.py", line 505, in check_migrations
    executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\migrations\executor.py", line 18, in __init__
    self.loader = MigrationLoader(self.connection)
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\migrations\loader.py", line 53, in __init__
    self.build_graph()
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\migrations\loader.py", line 223, in build_graph
    self.applied_migrations = recorder.applied_migrations()
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\migrations\recorder.py", line 77, in applied_migrations
    if self.has_table():
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\migrations\recorder.py", line 55, in has_table
    with self.connection.cursor() as cursor:
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\utils\asyncio.py", line 25, in inner
    return func(*args, **kwargs)
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\backends\base\base.py", line 270, in cursor
    return self._cursor()
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\backends\base\base.py", line 246, in _cursor
    self.ensure_connection()
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\utils\asyncio.py", line 25, in inner
    return func(*args, **kwargs)
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\backends\base\base.py", line 230, in ensure_connection
    self.connect()
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\utils.py", line 90, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\backends\base\base.py", line 230, in ensure_connection
    self.connect()
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\utils\asyncio.py", line 25, in inner
    return func(*args, **kwargs)
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\backends\base\base.py", line 211, in connect
    self.connection = self.get_new_connection(conn_params)
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\utils\asyncio.py", line 25, in inner
    return func(*args, **kwargs)
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\backends\postgresql\base.py", line 199, in get_new_connection
    connection = Database.connect(**conn_params)
  File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\psycopg2\__init__.py", line 122, in connect
    conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
django.db.utils.OperationalError: connection to server at "localhost" (::1), port 5432 failed: Connection refused (0x0000274D/10061)
        Is the server running on that host and accepting TCP/IP connections?
connection to server at "localhost" (127.0.0.1), port 5432 failed: Connection refused (0x0000274D/10061)
        Is the server running on that host and accepting TCP/IP connections?

这是我在 django 中的 settings.py 文件

DATABASES = {
    'default': {
        'ENGINE': 'django.contrib.gis.db.backends.postgis',
        'NAME': 'database_name',
        'USER': 'postgres',
        'PASSWORD': '******',
        'HOST': 'localhost',
        'PORT': '5434',
    }
}

嗨，我想通了。真是愚蠢的错误。我添加了两个 Database= {} 配置两次，一次在文件顶部，一次在底部，并且必须删除它，哈哈。

Answer 1

此问题是由于缺少权限而产生的。您应该在 pg_hba 文件中授予权限。

• 登录到您的数据库用户，然后播放命令psql。下面给出了顺序命令。

  • sudo su - postgres
  • psql
  • show hba_file;
  • 在我的例子中，输出是/var/lib/postgresql/data/pg_hba.conf。记住这个位置
  • \q
  • ctrl + d # for loging out from postgres user
  • sudo vim /var/lib/postgresql/data/pg_hba.conf #you can use your prefer text editor
  • 您需要更改文件，如下所示。只需将所有方法更改为 trust。