ASP.NET Core 2.0 Web 应用程序在将项目部署到 Azure Web 服务时失败并出现 SQLite 错误，但在本地环境中运行良好

Question

The ASP.NET Core 2.0 web application fails when I deploy it to Azure App Service.

This is what is being used in the project.

• ASP.NET Core 2.0 MVC Web Application
• Visual Studio 2017 Enterprise
• SQLite databases
• Code First Entity Framework
• Azure App Service

The web application works fine when I run it locally in Visual Studio. The problem results when I publish it to an Azure Web Service it cannot connect to the database. It states the following error when navigating to the deployed web application URL:

SqliteException: SQLite Error 1: 'no such table: Inventory'.

I've tried several times to apply an Update-Migration or an Add-Migration to the database but it will still result in the table not found when deployed to the Azure server.

Here are my SQLite connections defined in the Startup.cs file.

     // Add Inventory DB
        services.AddDbContext<InventoryContext>(options =>
        options.UseSqlite("Data Source=Inventory.db"));

        // Add User DB
        services.AddDbContext<UserContext>(options =>
        options.UseSqlite("Data Source=User.db"));

        // Add Purchase Order DB
        services.AddDbContext<PurchaseOrderContext>(options =>
        options.UseSqlite("Data Source=PurchaseOrder.db"));

Answer 1

Following @Derek solution, i modified my connection string on appsettings.json as i am using Configuration.GetConnectionString to fetch the connection string, and moved sqlite db to App_Data folder to wwwroot..

"ConnectionStrings": {
    "MyAppContext": "Data Source=./wwwroot/App_Data/myapp.db"
}

Answer 2

将 SQLite 数据库放在 .NET 解决方案目录中的“AppData”文件夹中，并将您的连接字符串指向该新位置。