解决Django连接db遇到的问题

1、django.db.utils.ConnectionDoesNotExist: The connection default doesn't exist

解决：第一个连接的命名一定要是default，将EN5Test改为default即可

2、django.core.exceptions.ImproperlyConfigured

Requested setting DATABASES, but settings are not configured. You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings  
在执行检查连接是否成功的语句前，执行set DJANGO_SETTINGS_MODULE=mysite.settings即可

3、django.db.utils.OperationalError: (1045, “Access denied for user ‘账号'@'localhost' (using password: YES)”)

基本上是账号、密码错误，连接的HOST和账号不符，修改即可