引入swagger后，在services.AddSwaggerGen中增加如下内容

            // Register the Swagger generator, defining 1 or more Swagger documents
            services.AddSwaggerGen(c =>
            {
                ......

                //Bearer 的scheme定义
                var securityScheme = new OpenApiSecurityScheme()
                {
                    Description = "JWT Authorization header using the Bearer scheme. Example: \"Authorization: Bearer {token}\"",
                    Name = "Authorization",
                    //参数添加在头部
                    In = ParameterLocation.Header,
                    //使用Authorize头部
                    Type = SecuritySchemeType.Http,
                    //内容为以 bearer开头
                    Scheme = "bearer",
                    BearerFormat = "JWT"
                };

                //把所有方法配置为增加bearer头部信息
                var securityRequirement = new OpenApiSecurityRequirement
                    {
                        {
                                new OpenApiSecurityScheme
                                {
                                    Reference = new OpenApiReference
                                    {
                                        Type = ReferenceType.SecurityScheme,
                                        Id = "bearerAuth"
                                    }
                                },
                                new string[] {}
                        }
                    };

                //注册到swagger中
                c.AddSecurityDefinition("bearerAuth", securityScheme);
                c.AddSecurityRequirement(securityRequirement);
            });

添加成功后，swagger右上方会有一个Authroize按钮，点击后可以输入bearer token。

每个API方法后，会有一个锁的标志，表明该方法会传递bearer token。

.net core Swagger添加bearer token参数