.NET Core 读取 appsettings.json

 appsettings.json 文件配置如下:

{ 
 "ConnectionStrings": {
    "MyDataBase": "你的数据库连接串"
  },
  "SystemSeting": {
    "Debugger": true
  },
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },
  "AllowedHosts": "*"
}

1.Startup.cs文件读取 

 从配置中读取的连接字符串中。 请注意， GetConnectionString() 方法查找其键为的配置值 ConnectionStrings:<connection string name> 。 需要导入 Microsoft.Extensions.Configu 命名空间才能使用此扩展方法。

C#复制

public void ConfigureServices(IServiceCollection services)
{
    services.AddDbContext<MyDataBase>(options =>
        options.UseSqlServer(Configuration.GetConnectionString("MyDataBase")));
}

2.其他文件读取 

var conf = new Microsoft.Extensions.Configuration.ConfigurationBuilder().SetBasePath(System.IO.Directory.GetCurrentDirectory()).AddJsonFile("appsettings.json", true, true).AddJsonFile("appsettings.Development.json", true, true).Build();

 var Debugger = conf.GetSection("SystemSeting:Debugger").Get<bool>(); 

 var TourMall = conf.GetSection("ConnectionStrings:MyDataBase").Get<string>();