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我在 nopcommerce 3.90 中运行项目时遇到错误，有时它运行良好，但有时会显示“无数据库实例”的错误。我很惊讶它显示了这种类型的错误。因为我为运行 nopcommerce 项目所做的正常事情。

我做了这些事情：

  • 通过安装 nopcommerce 设置设置文件。

  • 删除 nopcommerce 的 bin 文件夹。

  • 清理解决方案并重建它。

但仍然面临同样的问题。

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4 回答 4

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“没有数据库实例”这种类型的错误发生在 Nopcommerce 无法与数据库连接时。如果您已在本地创建数据库，请尝试查找 SQL 服务并重新启动该服务。但是，如果您将数据库托管在任何其他服务器上，请检查您的网络连接。

于 2018-05-26T05:56:45.533 回答
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There are some of summery solution that i have mention as below
=> Since i had moved a live cart to a test server, the settings in the database for that cart had force ssl and also force www before any url. Also under Store settings i still had the domain info for that site which was now difrent in the test server. Once i noticed this and updated the database it all started working.
=> 
You try change settings.txt file:
DataConnectionString: Data Source=localhost/IP;Initial Catalog=DBName;Integrated Security=False;Persist Security Info=False;User ID=DBUser;Password=DBPass;MultipleActiveResultSets=True
=> 
In my case I need config application pool for nopcomerce

my connection string 
DataProvider: sqlserver
DataConnectionString: Data Source=.;Initial Catalog=nopcommerce370;Integrated Security=True;Persist Security Info=False

I need set Application Pool Identity to user has access right to db
Check the image to details.
=>  Check also db permission.
=> try with
Data Source=9X.2XX.7X.XX\"yoursqlservenameinstance"
or
Data Source="yournamemachine"
or
Data Source="yournamemachine"\"yoursqlservenameinstance"
于 2019-06-21T05:18:09.243 回答
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你可以做一些事情，比如

  • 检查 App_data 上的设置文件是否存在

  • 检查连接字符串是否正确

  • 检查您的 SQL 服务器是否正常工作或通过尝试连接停止

  • 清除浏览器缓存

于 2017-08-15T04:01:03.077 回答
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试试这个``

Right click on the downloaded file (nopCommerce_3.40_Source.rar) ->select  properties -> press "Unblock".

和

and change connection string in Settings.txt file.
于 2017-09-13T10:28:11.927 回答