在 Configure 方法中使用 DependencyInjection

Question

在 ASP.NET CORE 网络应用程序中，我有一个 MyRepository class 和一个管理对存储库（数据库）的访问的接口 IMyRepository。

每次用户连接到应用程序（在站点上）时，我都需要在数据库中记录一个条目。

在Startup.cs中，在我做的ConfigureServices方法中

public void ConfigureServices(IServiceCollection services)
{
    // Adds services required for using options.
    services.AddOptions();
    // ...
    services.AddSingleton<IMyRepository, MyRepository>();

然后在Configure方法中我需要更新数据库

public void Configure(IApplicationBuilder app, 
                      IHostingEnvironment env, ILoggerFactory loggerFactory) {
// ...
IMyRepository myRep = ??? // should inject somehow
// ...

app.UseOpenIdConnectAuthentication(new OpenIdConnectOptions
{
    ClientId = Configuration["...ClientId"],
    Authority = Configuration["...AADInstance"] + Configuration["...TenantId"],
    CallbackPath = Configuration["...CallbackPath"],
    Events = new OpenIdConnectEvents
    {
        OnTicketReceived = context =>
        {
            var user = (ClaimsIdentity)context.Ticket.Principal.Identity;
            if (user.IsAuthenticated)
            {
                var firstName = user.FindFirst(ClaimTypes.GivenName).Value;
                var lastName = user.FindFirst(ClaimTypes.Surname).Value;
                var email = user.FindFirst(ClaimTypes.Email).Value;
                var connectedOn = DateTime.UtcNow;
                var userId = user.Name;   

                // 
                // HERE ADD the info in the DB via IMyRepository
                // 
                myRep.AddUserInfo(userId, firstName, lastName, email, connectedOn);
            }

            return Task.FromResult(0);
        }
    }
});

// ...

}

所以我的问题是 how/where 我是否注入 IMyRepository 以便在 Configure 方法中使用它？

Answer 1

修改你的Configure方法，增加一个参数IMyRepository myRep，只要你在ConfigureServices.

中注册，它就会为你注入

public void Configure(IApplicationBuilder app, 
                      IHostingEnvironment env, 
                      ILoggerFactory loggerFactory, 
                      IMyRepository myRep) { ... }

在 Configure 方法中使用 DependencyInjection

using DependencyInjection in the Configure Method

c#

asp.net

dependency-injection

asp.net-core-mvc

asp.net-core-1.1