asp.net core2.0 JWT Bearer 注意添加认证服务

public void ConfigureServices(IServiceCollection services)
{
string ClientId = Configuration["AzureAD:ClientId"];
string AadInstance =Configuration["AzureAD:AadInstance"];
string Tenant = Configuration["AzureAD:Tenant"];
string SignInPolicyId = Configuration["AzureAD:SignInPolicyId"];

services.AddAuthentication(options =>
{
options.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
}).AddJwtBearer(options =>
{
options.MetadataAddress = string.Format(AadInstance, Tenant, SignInPolicyId);
options.Audience = ClientId;
});

services.AddMvc();
}

上面的代码已经在Startup类中ConfigureServices，添加了.net Jwt Bear认证服务，但是如果只在Startup添加这一段代码，Jwt任务还是会失败。

因为，Jwt Bear服务，需要在Startup类中的Configure，添加如下这一段代码

app.UseAuthentication();

经过测试，Jwt认证会成功