Asp Net Core Swagger自动生成接口文档

Swagger是什么

Swagger工具为你的Asp Net Core生成漂亮的API文档。目前社会上大部分都是一个服务端为N个客户端提供接口，往往我们需要提供一个友好的API文档，Swagger的出现，几乎使得API文档完全自动化。

开始使用Swagger

此处我们使用开发IDE为VsCode,输入dotnet new webapi -o SwaggerDemo 创建ASP.NET Core Web API项目
添加Swashbuckle.AspNetCore包（此处不讨论包的安装方法,请自行上网搜索),在.csproj文件中会生成如下引用
打开Startup.cs文件,添加如下代

        public Startup(IConfiguration configuration, IHostingEnvironment env)
        {
            Configuration = configuration;
            this.Env = env;
        }
        public IHostingEnvironment Env { get; }

        public IConfiguration Configuration { get; }

        public string[] docs = new[] { "未分类" };

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
            if (Env.IsDevelopment())
            {
                services.AddSwaggerGen(options =>
                {
                    foreach (var d in docs) options.SwaggerDoc(d, new Info { Version = d });
                    options.DocInclusionPredicate((docName, description) =>
                    {
                        description.TryGetMethodInfo(out MethodInfo mi);
                        var attr = mi.DeclaringType.GetCustomAttribute<ApiExplorerSettingsAttribute>();
                        if (attr != null)
                        {
                            return attr.GroupName == docName;
                        }
                        else
                        {
                            return docName == "未分类";
                        }
                    });
                    var ss = options.SwaggerGeneratorOptions;
                    options.IncludeXmlComments(@"E:\VsCode\C#\.Net Core\第三章 利用Swagger生成接口文档\SwaggerDemo\bin\Debug\netcoreapp2.2\SwaggerDemo.xml");
                });
            }
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            app.UseMvc();
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseSwagger()
                .UseSwaggerUI(options  =>
                {
                    options.DocumentTitle = "Ron.liang Swagger 测试文档";
                    foreach (var item in docs)
                        options.SwaggerEndpoint($"/swagger/{item}/swagger.json", item);
                });
            }
        }