无法使用 mssql-django 连接 django 以存在 MS SQL 服务器

Question

尝试执行 manage.py runserver 时出现错误。 我已经为 sql 服务器安装了 mssql-django 和 odbc 驱动程序 17。 一般来说，我对 django 和 python 非常陌生，但我想使用现有的 ms sql 服务器而不是 Z786D348E95442121DC5B7387E 这是我在setting.py中的代码：

DATABASES = {
    "default": {
        "ENGINE": "mssql",
        "NAME": "eHospital_DKAG_NSTL",
        "USER": "sa",
        "PASSWORD": "passwod",
        "HOST": "172.16.2.20\sqlservertest",
        "PORT": "1433",
        "OPTIONS": {
            "driver": "ODBC Driver 17 for SQL Server", 
        },
    },
}

这是错误消息：

Exception in thread django-main-thread:
Traceback (most recent call last):
  File "F:\Python\Django\fptdb\lib\site-packages\django\db\backends\base\base.py", line 244, in ensure_connection
    self.connect()
  File "F:\Python\Django\fptdb\lib\site-packages\django\utils\asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "F:\Python\Django\fptdb\lib\site-packages\django\db\backends\base\base.py", line 225, in connect
    self.connection = self.get_new_connection(conn_params)
  File "F:\Python\Django\fptdb\lib\site-packages\mssql\base.py", line 353, in get_new_connection
    conn = Database.connect(connstr, **args)
pyodbc.OperationalError: ('08001', '[08001] [Microsoft][ODBC Driver 17 for SQL Server]TCP Provider: The wait operation timed out.\r\n (258) (SQLDriverConnect); [08001] [Microsoft][ODBC Driver 17 for SQL Server]Login timeout expired (0); [08001] [Microsoft][ODBC Driver 17 for SQL Server]Invalid connection string attribute (0); [08001] [Microsoft][ODBC Driver 17 for SQL Server]A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online. (258)')

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\Admin\AppData\Local\Programs\Python\Python310\lib\threading.py", line 1009, in _bootstrap_inner
    self.run()
  File "C:\Users\Admin\AppData\Local\Programs\Python\Python310\lib\threading.py", line 946, in run
    self._target(*self._args, **self._kwargs)
  File "F:\Python\Django\fptdb\lib\site-packages\django\utils\autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "F:\Python\Django\fptdb\lib\site-packages\django\core\management\commands\runserver.py", line 137, in inner_run
    self.check_migrations()
  File "F:\Python\Django\fptdb\lib\site-packages\django\core\management\base.py", line 576, in check_migrations
    executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
  File "F:\Python\Django\fptdb\lib\site-packages\django\db\migrations\executor.py", line 18, in __init__
    self.loader = MigrationLoader(self.connection)
  File "F:\Python\Django\fptdb\lib\site-packages\django\db\migrations\loader.py", line 58, in __init__
    self.build_graph()
  File "F:\Python\Django\fptdb\lib\site-packages\django\db\migrations\loader.py", line 235, in build_graph
    self.applied_migrations = recorder.applied_migrations()
  File "F:\Python\Django\fptdb\lib\site-packages\django\db\migrations\recorder.py", line 81, in applied_migrations
    if self.has_table():
  File "F:\Python\Django\fptdb\lib\site-packages\django\db\migrations\recorder.py", line 57, in has_table
    with self.connection.cursor() as cursor:
  File "F:\Python\Django\fptdb\lib\site-packages\django\utils\asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "F:\Python\Django\fptdb\lib\site-packages\django\db\backends\base\base.py", line 284, in cursor
    return self._cursor()
  File "F:\Python\Django\fptdb\lib\site-packages\mssql\base.py", line 246, in _cursor
    conn = super()._cursor()
  File "F:\Python\Django\fptdb\lib\site-packages\django\db\backends\base\base.py", line 260, in _cursor
    self.ensure_connection()
  File "F:\Python\Django\fptdb\lib\site-packages\django\utils\asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "F:\Python\Django\fptdb\lib\site-packages\django\db\backends\base\base.py", line 243, in ensure_connection
    with self.wrap_database_errors:
  File "F:\Python\Django\fptdb\lib\site-packages\django\db\utils.py", line 91, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "F:\Python\Django\fptdb\lib\site-packages\django\db\backends\base\base.py", line 244, in ensure_connection
    self.connect()
  File "F:\Python\Django\fptdb\lib\site-packages\django\utils\asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "F:\Python\Django\fptdb\lib\site-packages\django\db\backends\base\base.py", line 225, in connect
    self.connection = self.get_new_connection(conn_params)
  File "F:\Python\Django\fptdb\lib\site-packages\mssql\base.py", line 353, in get_new_connection
    conn = Database.connect(connstr, **args)
django.db.utils.OperationalError: ('08001', '[08001] [Microsoft][ODBC Driver 17 for SQL Server]TCP Provider: The wait operation timed out.\r\n (258) (SQLDriverConnect); [08001] [Microsoft][ODBC Driver 17 for SQL Server]Login timeout expired (0); [08001] [Microsoft][ODBC Driver 17 for SQL Server]Invalid connection string attribute (0); [08001] [Microsoft][ODBC Driver 17 for SQL Server]A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online. (258)')

任何帮助表示赞赏。 谢谢你。

Answer 1

将“PORT”保留为空白或删除“PORT” ，否则如果设置任何端口号都会出错，例如“2244” 、 “9877”甚至“1433” ，这是MSSQL的默认端口号：

DATABASES = {
    "default": {
        "ENGINE": "mssql",
        "NAME": "eHospital_DKAG_NSTL",
        "USER": "sa",
        "PASSWORD": "passwod",
        "HOST": "172.16.2.20\sqlservertest",
        "PORT": "",       # Keep it blank
        # "PORT": "1433", # Or remove it
        "OPTIONS": {
            "driver": "ODBC Driver 17 for SQL Server", 
        },
    },
}

您可以看到在mssql-django 的示例中， “PORT”保持空白，如下所示：

DATABASES = {
    'default': {
        'ENGINE': 'mssql',
        'NAME': 'mydb',
        'USER': 'user@myserver',
        'PASSWORD': 'password',
        'HOST': 'myserver.database.windows.net',
        'PORT': '', # Kept blank

        'OPTIONS': {
            'driver': 'ODBC Driver 17 for SQL Server',
        },
    },
}

# set this to False if you want to turn off pyodbc's connection pooling
DATABASE_CONNECTION_POOLING = False