.NET Core从appsettings.json获取连接字符串 [英] .NET Core get connection string from appsettings.json
问题描述
我开发了一个简单的Web应用程序，将来，我希望将其作为多租户来使用。
I develop a simple web app and, in the future, I want to do it as multi-tenancy.
所以我想将连接字符串直接写入 OnConfiguring 方法：
So I want to write the connection string straight into OnConfiguring method:
public class ApplicationContext : DbContext
{
public DbSet<User> Users { get; set; }
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
optionsBuilder.UseSqlServer("connection string from appsettings.json");
base.OnConfiguring(optionsBuilder);
}
}
启动类：
public void ConfigureServices(IServiceCollection services)
{
services.AddDbContext<ApplicationContext>();
services.AddMvc();
}
如何从 appsettings.json中提取连接字符串放入 ApplicationContext 类？
我不想为 ApplicationContext 类。
推荐答案
所以我要将连接字符串直接写入OnConfiguring方法：
So I want to write the connection string straight into OnConfiguring method:
如何从appsettings.json中提取连接字符串到ApplicationContext类中？
How can I extract connection string from appsettings.json into ApplicationContext class?
我不想为ApplicationContext类创建任何构造函数。
I wouldn't like to create any constructors for ApplicationContext class.
您可以使用 Options Pattern 通过 IOptions ，但是最简单的方法是在 ApplicationContext 构造函数中使用DI；）
You could use Options Pattern via IOptions but the easiest way is using DI in ApplicationContext constructor ;)
请关注以下文章，
- Example of using IOptions,
- Using Options and configuration objects,
- IOptions Interface,
这篇关于.NET Core从appsettings.json获取连接字符串的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
