.netcore3.1添加swagger及JWT Authorize 验证

首先引入Microsoft.AspNetCore.Authentication.JwtBearer nuget包

在startup中加入jwt配置。这里ValidIssuer和ValidAudience和secret 最好配置一下，我这里写死了。

 public static void AddSwagger(this IServiceCollection services)
        {

            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new OpenApiInfo
                {
                    Title = "Cabinet.Core.API 接口文档——Netcore 3.1",
                    Version = "v1",
                    Description = "Cabinet.Core.API HTTP API V1",

                });
                #region Jwt
                //开启权限小锁
                c.OperationFilter<AddResponseHeadersFilter>();
                c.OperationFilter<AppendAuthorizeToSummaryOperationFilter>();

                //在header中添加token，传递到后台
                //Swagger响应头#
                //这里需要Nuget引用Swashbuckle.AspNetCore.Filters，oauth2需要写死，SecurityRequirementsOperationFilter中默认securitySchemaName = "oauth2";
                //未添加该配置时，Bearer一直无法加入到JWT发起的Http请求的头部，无论怎么请求都会是401；
                c.OperationFilter<SecurityRequirementsOperationFilter>();
                c.AddSecurityDefinition("oauth2", new OpenApiSecurityScheme
                {
                    Description = "JWT授权(数据将在请求头中进行传递)直接在下面框中输入Bearer {token}(注意两者之间是一个空格) \"",
                    Name = "Authorization",//jwt默认的参数名称
                    In = ParameterLocation.Header,//jwt默认存放Authorization信息的位置(请求头中)
                    Type = SecuritySchemeType.ApiKey
                });


                #endregion
                //xml注释
                var basePath = PlatformServices.Default.Application.ApplicationBasePath;
                var xmlPath = Path.Combine(basePath, "Cabinet.Core.API.xml");
                c.IncludeXmlComments(xmlPath, true);
            });

            #region 添加验证服务

            // 添加验证服务
            services.AddAuthentication(x =>
            {
                x.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
                x.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
            }).AddJwtBearer(o =>
            {
                o.TokenValidationParameters = new TokenValidationParameters
                {
                    // 是否开启签名认证
                    ValidateIssuerSigningKey = true,
                    IssuerSigningKey = new SymmetricSecurityKey(Encoding.ASCII.GetBytes("111111111111111111111111111111111111111111111111111")),
                    // 发行人验证，这里要和token类中Claim类型的发行人保持一致
                    ValidateIssuer = true,
                    ValidIssuer = "API",//发行人
                    // 接收人验证
                    ValidateAudience = true,
                    ValidAudience = "User",//订阅人
                    ValidateLifetime = true,
                    ClockSkew = TimeSpan.Zero,
                };
            });
            #endregion

        }

再来一个获取Token的接口

 [AllowAnonymous]
        [HttpGet,Route("/GetToken")]
        public ActionResult<string> GetToken()
        {
            //DateTime utc = DateTime.UtcNow;
            var claims = new List<Claim>
            {
                new Claim(JwtRegisteredClaimNames.Jti,"1"),//编号
                new Claim(JwtRegisteredClaimNames.Iat, $"{new DateTimeOffset(DateTime.Now).ToUnixTimeSeconds()}"),//签发时间
                new Claim(JwtRegisteredClaimNames.Nbf,$"{new DateTimeOffset(DateTime.Now).ToUnixTimeSeconds()}"),//生效时间
                 // 过期时间 100秒
                new Claim(JwtRegisteredClaimNames.Exp,$"{new DateTimeOffset(DateTime.Now.AddSeconds(100)).ToUnixTimeSeconds()}"),
                new Claim(JwtRegisteredClaimNames.Iss,"API"), // 签发者
                new Claim(JwtRegisteredClaimNames.Aud,"User") // 接收者
            };


            // 密钥
            var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes("111111111111111111111111111111111111111111111111111"));
            var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);

            var tokenHandler = new JwtSecurityTokenHandler();

            JwtSecurityToken jwt = new JwtSecurityToken(

                claims: claims,// 声明的集合
                               //expires: .AddSeconds(36), // token的有效时间
                signingCredentials: creds
                );
            var handler = new JwtSecurityTokenHandler();
            // 生成 jwt字符串
            var strJWT = handler.WriteToken(jwt);
            return Ok(strJWT);
        }

在startup管道中启用授权app.UseAuthentication();

运行一下，访问天气接口，发现访问不了，因为加了[Authorize]特性后需要认证，如下图，出现401没有权限的标志。　