ASP.NET Core Authentication认证实现方法
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2020-12-17
03:55:34
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ASP.NET Core Authentication认证实现方法认证实现方法
追本溯源，从使用开始 追本溯源，从使用开始
首先看一下我们通常是如何使用微软自带的认证，一般在Startup里面配置我们所需的依赖认证服务，这里通过JWT的认证方式讲
解
public void ConfigureServices(IServiceCollection services)
{
services.AddAuthentication(authOpt =>
{
authOpt.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
authOpt.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
})
.AddJwtBearer(o =>
{
o.TokenValidationParameters = new TokenValidationParameters
{
//配置自己所要验证的参数
};
});
}
我们来看一下源码AddAuthentication主要做了什么
public static class AuthenticationServiceCollectionExtensions
{
public static AuthenticationBuilder AddAuthentication( this IServiceCollection services, Action<AuthenticationOptions> configureOptions)
{
if (services == null)
throw new ArgumentNullException(nameof (services));
if (configureOptions == null)
throw new ArgumentNullException(nameof (configureOptions));
AuthenticationBuilder authenticationBuilder = services.AddAuthentication();
services.Configure<AuthenticationOptions>(configureOptions);
return authenticationBuilder;
}
public static AuthenticationBuilder AddAuthentication( this IServiceCollection services)
{
if (services == null)
throw new ArgumentNullException(nameof (services));
services.AddAuthenticationCore();
services.AddDataProtection();
services.AddWebEncoders();
services.TryAddSingleton<ISystemClock, SystemClock>();
return new AuthenticationBuilder(services);
}
public static AuthenticationBuilder AddAuthentication(
this IServiceCollection services,
string defaultScheme)
{
return services.AddAuthentication((Action<AuthenticationOptions>) (o => o.DefaultScheme = defaultScheme));
}
.....
}
ConfigureServices方法基本都是服务的注册，基于微软的风格，这里的AddAuthenticationCore肯定是我们的认证服务注册方法，
来看一下
public static class AuthenticationCoreServiceCollectionExtensions
{
/// <summary>
/// Add core authentication services needed for <see cref="T:Microsoft.AspNetCore.Authentication.IAuthenticationService" />.
/// </summary>
public static IServiceCollection AddAuthenticationCore(
this IServiceCollection services)
{
if (services == null)
throw new ArgumentNullException(nameof (services));
services.TryAddScoped<IAuthenticationService, AuthenticationService>();
services.TryAddSingleton<IClaimsTransformation, NoopClaimsTransformation>();
services.TryAddScoped<IAuthenticationHandlerProvider, AuthenticationHandlerProvider>();
services.TryAddSingleton<IAuthenticationSchemeProvider, AuthenticationSchemeProvider>();
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