[英].NET Core 2.0 Separating Startup.cs Services Injection
所以現在我得到了一個使用N層架構的項目(3層:API,BL,DAL)。 我擔心的是我的所有服務注入都發生在我的Startup.cs文件中。
是否有可能將它們轉移到正確的解決方案?
EG Startup.cs ConfigureServices方法
public void ConfigureServices(IServiceCollection services)
{
//MVC
services.AddMvc();
//Swagger
services.AddSwaggerGen(c =>
{
c.SwaggerDoc("v1", new Info
{
Title = "2Commit Blogpost API",
Version = "v1"
});
});
services.ConfigureSwaggerGen(options =>
{
options.CustomSchemaIds(x => x.FullName);
});
//Mediatr
services.AddScoped<IMediator, Mediator>();
services.AddTransient<SingleInstanceFactory>(sp => sp.GetService);
services.AddTransient<MultiInstanceFactory>(sp => sp.GetServices);
services.AddMediatorHandlers(typeof(Startup).Assembly);
//MongoDB
services.Configure<MongoSettings>(s =>
{
s.Database = Configuration.GetSection("MongoConnection:Database").Value;
});
services.AddSingleton<IMongoClient, MongoClient>(client => new MongoClient(Configuration.GetSection("MongoConnection:ConnectionString").Value));
//BL
services.AddTransient<IUserService, UserService>();
services.AddTransient<IAccountService, AccountService>();
//DAL
services.AddTransient<IRepository, MongoRepository>();
//Authentication
services.AddAuthentication()
.AddJwtBearer(jwt =>
{
var signingKey =
new SymmetricSecurityKey(Encoding.ASCII.GetBytes(Configuration.GetSection("Secret:Key").Value));
jwt.TokenValidationParameters = new TokenValidationParameters
{
ValidateIssuerSigningKey = true,
IssuerSigningKey = signingKey,
ValidateIssuer = true,
ValidIssuer = "2CIssuer",
ValidateAudience = true,
ValidAudience = "2CAudience",
ValidateLifetime = true,
ClockSkew = TimeSpan.Zero
};
});
//Authorization
services.AddAuthorization(auth =>
{
auth.AddPolicy("Bearer", new AuthorizationPolicyBuilder(JwtBearerDefaults.AuthenticationScheme).RequireAuthenticatedUser().Build());
});
}
理想情況下,“BL”部分應移至我的BL解決方案,DAL和MongoDB部分移至我的DAL解決方案。
我該如何拆分?
您應該使用當前行在BL項目的根目錄中創建BlStartupExtensions.cs
:
public static class BlStartupExtensions
{
public static void ConfigureBlServices(this IServiceCollection services)
{
//register what you need
}
}
然后在Startup.cs
注冊它:
services.ConfigureBlServices();
使用DAL,解決方案絕對相同。
您可以在相關項目中創建擴展,如下所示。
public static class DalServiceCollectionExtensions
{
public static IServiceCollection AddDALDependencies(this IServiceCollection services, IConfigurationRoot configuration)
{
services.Configure<MongoSettings>(s =>
{
s.Database = configuration.GetSection("MongoConnection:Database").Value;
});
services.AddSingleton<IMongoClient, MongoClient>(
client => new MongoClient(configuration.GetSection("MongoConnection:ConnectionString").Value));
return services;
}
}
然后,您可以添加依賴項,如下所示。
public void ConfigureServices(IServiceCollection services)
{
services.AddDALDependencies(Configuration);
}
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