swaggerui集成oauth implicit

添加引用
Swashbuckle.AspNetCore
IdentityServer4.AccessTokenValidation

预先准备好IdentityServer4配置client与Api Resources
Startup 配置 Authentication Api Resources 和SwaggerUI Client配置

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc(option =>
    {
        option.Filters.Add(typeof(ActionFilter));
        option.Filters.Add(typeof(ExceptionFilter));
    })
    .SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
    string youAuthority = "http://127.0.0.1";
    services.AddAuthentication("Bearer")
        .AddIdentityServerAuthentication(options =>
        {
            options.Authority = youAuthority;
            options.ApiName = "Api";
            options.RequireHttpsMetadata = false;
        });

    services.AddSwaggerGen(options =>
    {
        options.SwaggerDoc("v1", new Info { Title = "Test Service API", Version = "v1" });
        options.DocInclusionPredicate((docName, description) => true);
        options.CustomSchemaIds(type => type.FullName);

        options.AddSecurityDefinition("oauth2", new OAuth2Scheme
        {
            Type = "oauth2",
            Flow = "implicit",
            AuthorizationUrl = $"{youAuthority}/connect/authorize",
            TokenUrl = $"{youAuthority}/connect/token",
            Scopes = new Dictionary<string, string>()
            {
                { "scope", "定义的scope" }  //Api Resources 中的 scope
            }
        });

        options.OperationFilter<AuthResponsesOperationFilter>();
    });
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }
    app.UseAuthentication();
    app.UseMiddleware<FirstMiddleware>();

    app.UseMvc();
    
    app.UseSwagger().
        UseSwaggerUI(options =>![](https://img2018.cnblogs.com/blog/355798/201903/355798-20190328201652364-1689226610.png)

        {
            options.SwaggerEndpoint("/swagger/v1/swagger.json", "Test Service API");
            //支持 implicit 的 Client
            options.OAuthClientId("swaggerui");
            options.OAuthAppName("Test Service Swagger Ui");
        });
}

对有鉴权属性的方法添加请求时传递token和添加预设返回状态

public class AuthResponsesOperationFilter : IOperationFilter
{
    public void Apply(Operation operation, OperationFilterContext context)
    {
        // 反射Controller 包含 AuthorizeAttribute 时在请求头添加authorization: Bearer 
        var controllerScopes = context.ApiDescription.ControllerAttributes()
            .OfType<AuthorizeAttribute>()
            .Select(attr => attr.Policy);

        var actionScopes = context.MethodInfo
            .GetCustomAttributes(true)
            .OfType<AuthorizeAttribute>()
            .Select(attr => attr.Policy)
            .Distinct();

        var requiredScopes = controllerScopes.Union(actionScopes).Distinct();

        if (requiredScopes.Any())
        {
            operation.Responses.Add("401", new Response { Description = "Unauthorized" });
            operation.Responses.Add("403", new Response { Description = "Forbidden" });

            operation.Security = new List<IDictionary<string, IEnumerable<string>>>();
            operation.Security.Add(new Dictionary<string, IEnumerable<string>>
            {
                { "oauth2", requiredScopes }
            });
        }
    }
}

在 Action 上添加 Authorize

[HttpGet("{id}")]
[Authorize]
public ActionResult<string> Get(int id)
{
    return "value";
}

效果图

//新增的两种返回状态
operation.Responses.Add("401", new Response { Description = "Unauthorized" });
operation.Responses.Add("403", new Response { Description = "Forbidden" });

登录完后请求会带上authorization: Bearer

示例代码
Swashbuckle.AspNetCore