ASP.NET Core使用JWT认证授权的方法

public void ConfigureServices(IServiceCollection services)
    {
      services.AddControllers();
      services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)//默认授权机制
        .AddJwtBearer(options =>
        {
          options.TokenValidationParameters=new TokenValidationParameters()
          {
            ValidateIssuer = true,
            ValidateAudience = true,
            ValidateLifetime = true,
            ValidateIssuerSigningKey = true,
            ValidIssuer = _tokenParameter.Issuer,
            ValidAudience = _tokenParameter.Audience,
            IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_tokenParameter.SecurityKey))
          };
        });
    }

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
      if (env.IsDevelopment())
      {
        app.UseDeveloperExceptionPage();
      }

app.UseRouting();
      app.UseAuthentication();
      app.UseAuthorization();

app.UseEndpoints(endpoints =>
      {
        endpoints.MapControllers();
      });
    }
  }
}

3、在资源控制器上添加[Authorize]属性，以启用认证授权访问API资源

　　 [ApiController]
  [Route("[controller]")]
  [Authorize]
  public class WeatherForecastController : ControllerBase
  {
    private static readonly string[] Summaries = new[]
    {
      "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
    };

private readonly ILogger<WeatherForecastController> _logger;

public WeatherForecastController(ILogger<WeatherForecastController> logger)
    {
      _logger = logger;
    }

[HttpGet]
    public IEnumerable<WeatherForecast> Get()
    {
      var rng = new Random();
      return Enumerable.Range(1, 5).Select(index => new WeatherForecast
      {
        Date = DateTime.Now.AddDays(index),
        TemperatureC = rng.Next(-20, 55),
        Summary = Summaries[rng.Next(Summaries.Length)]
      })
      .ToArray();
    }
  }

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