IdentityServer4实现.Net Core API接口权限认证(快速入门)

第二步：配置启动类

public void ConfigureServices(IServiceCollection services)
    {
      //注册服务
      services.AddAuthentication("Bearer")
        .AddIdentityServerAuthentication(x =>
        {
          x.Authority = "http://localhost:5000";//鉴权服务地址
          x.RequireHttpsMetadata = false;
          x.ApiName = "api1";//鉴权范围
        });
      services.AddControllers();
    }

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
      if (env.IsDevelopment())
      {
        app.UseDeveloperExceptionPage();
      }
      app.UseAuthentication();//添加鉴权认证
      app.UseHttpsRedirection();
      app.UseRouting();
        app.UseAuthorization();
      app.UseEndpoints(endpoints =>
      {
        endpoints.MapControllers();
      }); 
    }

应用程序默认的端口号有两种：1.http://localhost:5000 2.https://localhost:5001.为了避免端口号冲突被占用，我们可以在Program类中修改应用程序启动端口号。

public static IHostBuilder CreateHostBuilder(string[] args) =>
      Host.CreateDefaultBuilder(args)
      
        .ConfigureWebHostDefaults(webBuilder =>
        {
          webBuilder.UseUrls("http://*:5555");//设置启动端口号
          webBuilder.UseStartup<Startup>();
        });

第三步：创建API DEMO

[Route("api/[controller]")]
  [ApiController]
  public class TestController : ControllerBase
  {
    // GET: api/Test
    /// <summary>
    /// 方法加权
    /// </summary>
    /// <returns></returns>
    [Authorize]
    [HttpGet]
    public IEnumerable<string> Get()
    {
      return new string[] { "value1", "value2" };
    }

    /// <summary>
    /// 方法未加权 可直接访问
    /// </summary>
    /// <param name="id"></param>
    /// <returns></returns>
    // GET: api/Test/5
    [HttpGet("{id}", Name = "Get")]
    public string Get(int id)
    {
      return "value";
    }

    /// <summary>
    /// 开放获取token API 接口
    /// </summary>
    /// <returns></returns>
    [HttpGet("GetToken")]
    public async Task<string> GetToken()
    {
      var client = new HttpClient();
      var tokenResponse = await client.RequestPasswordTokenAsync(new PasswordTokenRequest
      {
        Address = "http://localhost:5000/connect/token",
        ClientId = "client",
        ClientSecret = "secret",
        Scope = "api1",
        UserName = "Admin",
        Password = "123456",
      });

      if (tokenResponse.IsError)
      {
        return tokenResponse.Error;
      }

      return tokenResponse.AccessToken;

    }
  }

1.接口方法上加上：

[Authorize]

相当于对接口加权，只有被授权的用户才能访问（即获取token的用户）。此时上文中接口