public void Configure(IApplicationBuilder app)
{
    // Setup configuration sources
    var configuration = new Configuration();
    configuration.AddJsonFile("config.json");
    configuration.AddEnvironmentVariables();
 
    // Set up application services
    app.UseServices(services =>
    {
        // Add EF services to the services container
        services.AddEntityFramework()
           .AddsqlServer();
 
        // Configure DbContext
        services.SetupOptions<DbContextOptions>(options =>
        {
           options.UsesqlServer(configuration.Get("Data:DefaultConnection:ConnectionString"));
        });
 
        // Add Identity services to the services container
        services.AddIdentitysqlServer<ApplicationDbContext,ApplicationUser>()
           .AddAuthentication();
 
        // Add MVC services to the services container
        services.AddMvc();
    });
 
    // Enable Browser Link support
    app.UseBrowserLink();
 
    // Add static files to the request pipeline
    app.UseStaticFiles();
 
    // Add cookie-based authentication to the request pipeline
    app.UseCookieAuthentication(new CookieAuthenticationOptions
    {
        AuthenticationType = ClaimsIdentityOptions.DefaultAuthenticationType,LoginPath = new PathString("/Account/Login"),});
 
    // Add MVC to the request pipeline
    app.UseMvc(routes =>
    {
        routes.MapRoute(
            name: "default",template: "{controller}/{action}/{id?}",defaults: new { controller = "Home",action = "Index" });
 
        routes.MapRoute(
            name: "api",template: "{controller}/{id?}");
    });
}

在哪里可以访问HttpConfiguration实例，以便我可以设置CamelCasePropertyNamesContractResolver，就像我在WebApi 2中所做的那样：

var formatterSettings = config.Formatters.JsonFormatter.SerializerSettings;
formatterSettings.Formatting = Formatting.None;
formatterSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();