如何修复错误:不支持django.db.utils.NotSupportedError: URI

Question

在Linux机器中的Django项目(在AWS中)中，我使用：

• Python 3.5.1
• Django 1.11.7

我已经为我的项目创建了虚拟环境，所有的依赖项都安装在那里。对于数据库，我使用的是sqlite3。有关版本详细信息，请参阅下面。

>>>import sqlite3
>>>sqlite3.version
'2.6.0'
>>>sqlite3.sqlite_version_info
(3, 7, 17)

在settings.py中，数据库部分如下：

DATABASES = {
   'default': {
      'ENGINE': 'django.db.backends.sqlite3',
      'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
   }
}

在运行runserver时，我得到了一个异常，名为sqlite3.NotSupportdError:URI不支持，因为它生成了一个错误，URI不支持，我无法修复该错误。

我已经看过像djangoproject.com和google.forum这样的帖子，但是仍然无法理解这个错误的原因。我还试着做，但同样的错误也出现了。

注意:在windows机器中，我的项目运行良好。

请参阅下面的回溯：

# python manage.py runserver
Performing system checks...

System check identified no issues (0 silenced).
Unhandled exception in thread started by <function check_errors. 
<locals>.wrapper at 0x7f07ff09c2f0>
Traceback (most recent call last):
  File "/tech/poc/env/lib/python3.5/site-packages/django/db/backends/base/base.py", line 213, in ensure_connection
    self.connect()
  File "/tech/poc/env/lib/python3.5/site- packages/django/db/backends/base/base.py", line 189, in connect
    self.connection = self.get_new_connection(conn_params)
  File "/tech/poc/env/lib/python3.5/site-packages/django/db/backends/sqlite3/base.py", line 198, in get_new_connection
    conn = Database.connect(**conn_params)
  sqlite3.NotSupportedError: URIs not supported

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

  Traceback (most recent call last):
  File "/tech/poc/env/lib/python3.5/site-packages/django/utils/autoreload.py", line 228, in wrapper
    fn(*args, **kwargs)
  File "/tech/poc/env/lib/python3.5/site-packages/django/core/management/commands/runserver.py", line 128, in inner_run
    self.check_migrations()
  File "/tech/poc/env/lib/python3.5/site-packages/django/core/management/base.py", line 422, in check_migrations
    executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
  File "/tech/poc/env/lib/python3.5/site-packages/django/db/migrations/executor.py", line 20, in __init__
    self.loader = MigrationLoader(self.connection)
  File "/tech/poc/env/lib/python3.5/site-packages/django/db/migrations/loader.py", line 52, in __init__
    self.build_graph()
  File "/tech/poc/env/lib/python3.5/site-packages/django/db/migrations/loader.py", line 209, in build_graph
    self.applied_migrations = recorder.applied_migrations()
  File "/tech/poc/env/lib/python3.5/site-packages/django/db/migrations/recorder.py", line 65, in applied_migrations
    self.ensure_schema()
  File "/tech/poc/env/lib/python3.5/site-packages/django/db/migrations/recorder.py", line 52, in ensure_schema
    if self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cursor()):
  File "/tech/poc/env/lib/python3.5/site-packages/django/db/backends/base/base.py", line 254, in cursor
    return self._cursor()
  File "/tech/poc/env/lib/python3.5/site-packages/django/db/backends/base/base.py", line 229, in _cursor
    self.ensure_connection()
  File "/tech/poc/env/lib/python3.5/site-packages/django/db/backends/base/base.py", line 213, in ensure_connection
    self.connect()
  File "/tech/poc/env/lib/python3.5/site-packages/django/db/utils.py", line 94, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/tech/poc/env/lib/python3.5/site-packages/django/utils/six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "/tech/poc/env/lib/python3.5/site-packages/django/db/backends/base/base.py", line 213, in ensure_connection
    self.connect()
  File "/tech/poc/env/lib/python3.5/site-packages/django/db/backends/base/base.py", line 189, in connect
    self.connection = self.get_new_connection(conn_params)
  File "/tech/poc/env/lib/python3.5/site-packages/django/db/backends/sqlite3/base.py", line 198, in get_new_connection
    conn = Database.connect(**conn_params)
django.db.utils.NotSupportedError: URIs not supported

请帮助理解并修复此错误。这个问题没有相关的文章，我也没有在google中找到任何相关的信息。

Answer 1

我也遇到了类似的问题。原来Django 2.1与sqlit3.6.20不兼容。降级到2.0.x版本，你应该会很好。这个问题已经被提出，并被命名为“封闭的bug- wontfix”这里。

Answer 2

1.您必须首先检查sqlite3版本。应该是3.X --我的配置是Python 3.7、django 2.1.7和sqlite3。您可以检查sqlite3版本如下：>>import sqlite3

>>sqlite3.version '2.6.0‘>>> sqlite3.sqlite_version_info (3，6，20)

1. 签入"/usr/local/lib/python3.7/site-packages/django/db/backends/sqlite3/base.py"，查找行“kwargs.update({'check_same_thread': False, 'uri': False})如果'uri‘为真”，然后将其改为False作为root。代码更改后，重新启动计算机并运行python runserver migrate --这将解决您的问题。

另外，您可以尝试用硬编码的db.sqli3文件名在SETTINGS.py文件中更改数据库‘name’。

Answer 3

检查BASE_DIR设置中指定的路径。