从 json 文件设置到 JWT 的数据注入

Question

我正在尝试将 jwt 设置从 json 文件插入到 StartUp.ConfigureServices：

appsettings.json

..,

  "jwt": {
    "key": "some_password123TEST!",
    "issuer": "http: //localhost:Port",
    "expiryMinutes": 60
  }

JwtSettings.cs

public class JwtSettings
{
  public string Key { get; set; }
  public string Issuer { get; set; }
  public int ExpiryMinutes { get; set; }
}

Startup.cs

public void ConfigureServices(IServiceCollection services)
{
 ...
 services.Configure<JwtSettings>(Configuration.GetSection("jwt"));

  services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme).AddJwtBearer(o =>
  {
            o.TokenValidationParameters = new TokenValidationParameters
            {
               // ValidateIssuer = true,
               ValidateIssuer = JwtSettings.Issuer ???
            ......
  });
}

现在如何从 JwtSettings.Issuer 获取我的设置？

我尝试添加也将其添加到Configure 方法：

app.ApplicationServices.GetService<JwtSettings>();

或

var test = app.ApplicationServices.GetService<JwtSettings>();
app.UseAuthentication(test);

但不是这样的。

Answer 1

您可以使用以下代码获取问题值：

services.Configure<JwtSettings>(Configuration.GetSection("jwt"));

services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme).AddJwtBearer(o =>
{
    var config = services.BuildServiceProvider().GetRequiredService<IOptions<JwtSettings>>().Value;
    o.TokenValidationParameters = new TokenValidationParameters
    {
        ValidateIssuer = true,
        ValidIssuer = config.Issuer
    };
});